Casino Caliente the great wall slot file

Casino Caliente Great Wall Reception Archive

PostgreSQL keeps front-end write files (WAL) in the PG_WAL/ subdirectory of the cluster. This log file records changes to the database's data files. This log file exists primarily for crash security: if the system crashes, the database can be brought back to consistency by "replaying" the log entries made since the last checkpoint. If recovery is required, the process is repeated, restoring the file system backup and bringing the system back to its current state from the backed-up WAL files. This approach is more complex to manage than previous approaches, but it has some significant advantages:

As a starting point, you do not need a fully consistent backup of the file system. Any internal inconsistencies in the backup are corrected by log replay (this is not very different from what happens during crash recovery). Therefore, you do not need a file system snapshot facility, just tar or a similar archiving tool.
Since an infinitely long series of WAL files can be combined for replay, continuous backups can be achieved by simply continuing to archive WAL files. This is especially valuable for large databases where it is inconvenient to take full backups frequently.
There is no need to replay the WAL entries forever; you can stop the replay at any point and have a fixed snapshot of the database at that time. Thus, this technique supports point-in-time recovery: it is possible to restore the database to its state at any time since the database backup was taken.
If you continually feed the WAL file series to another machine loaded with the same base backup file, you have a hot standby system: you can pull a near-streaming copy of the database onto the second machine at any time.

NOTE

PG_DUMP and PG_DUMPALL do not produce filesystem backups; such dumps are logical and do not contain enough information to be used by WAL replay.

Like simple filesystem techniques, this method only supports recovery of an entire database cluster, not a subset. It also requires a lot of archive storage: backups are bulky, and busy systems generate many megabytes of WAL traffic that must be archived. Nevertheless, it is the preferred backup technique in many situations where high reliability is required.

To recover successfully using continuous archiving (also called "online backup" by many database vendors), you need a continuous sequence of WAL file records that go back at least as far as the time you started the backup. Therefore, you should set up and test a process for archiving WAL files before you take your first database backup. Therefore, we will first explain how WAL file archiving works.

25. 3. 1. WAL#Setting up archiving

In an abstract sense, a running postgresql system generates an infinitely long sequence of WAL files. The system naturally divides this sequence into WAL segment files, typically 16MB per fragment (though the segment size may be changed during initDB). Without WAL archiving, the system typically creates some segment files and then "recycles" them by renaming the segment files that are not needed by number. Segment files whose contents precede the last checkpoint are assumed to be no longer of interest and can be recycled.

When archiving Wal data, when each segment file is full, it is necessary to record the contents and save the data somewhere before the segment file is recycled for reuse. Copy the partition file to the directory placed in the NFS of another machine, write it on the tape drive (make sure there is a way to track the original name of each file), and put together the partition file. You can write it in. To provide flexibility to the database administrator, PostgreSQL does not assume the archive method. Instead, PostgreSQL allows the administrator to specify a shell command or an archive brain. This may be a simple shell command using CP, or it may call a complex C function.

To enable the WAL archive, set the WAL_LEVEL configuration parameter to or higher, set Archive_mode, specify the shell commands used in the Archive_command configuration parameters, and specify the library used in the Archive setting parameter. In fact, these settings are always placed in the PostgreSql. conf file.

In archive_command,%p is replaced with the path name of the file in the archive, and the%f is replaced with only the file name. (If you need to embed an actual%character in the command, use%. The easiest and convenient command is:

Archive_command = 'Test! d = 'copy'%p '' c: ￤Serverarchivedir ￤%f ' # Windows

This command is copied the WAL archive to the/mnt/server/archivedir directory (this is an example, not recommended, so it does not always work on all platforms). After replacing P and%F parameters, the commands actually executed are as follows:

Δμή! -F/MNT/SERVER/ARCHIEDIR/000000010000A9000065 & amp; & amp; amp; 0065

A similar command is created to archive each new file.

The archive command runs under the ownership of the same user that the PostgreSQL server runs as. Since the WAL file array being archived essentially contains everything in your database, you want to make sure that the archived data is protected from prying eyes; for example, archive to a directory that has no group or global read access.

It is important that the archive command only returns a NULL exit status if it succeeds. Once it returns NULL, PostgreSQL will consider the file successfully archived and it may be deleted or reused. However, a non-zero status tells PostgreSQL that the file was not archived.

Another way to archive is to use a custom archive module as archive_library. Such a module is written in C, so writing it yourself may require much more effort than writing a bark command. However, archive modules are more efficient than shell archives, and give you access to many useful server resources. See Chapter 49 for more information about archive modules.

If the archive command is terminated by a signal (other than SIGTERM, which is used as part of server mode exit) or a shell error with output status greater than 125 (such as command not found), or if the archive operation issues an ERROR or FATAL, the archive process will be aborted and restarted by the mailer. In such cases, the failure will not be reported by pg_stat_archiver.

Archive commands and libraries should generally be designed to refuse to overwrite existing archive files. This is an important security feature to preserve the integrity of the archive in the event of administrator error (e. g., sending the output of two different servers to the same archive directory). We encourage you to test your recommended archive library to make sure it will not overwrite an existing archive.

In rare cases, PostgreSQL may try to r e-archive of the previously archived WAL file. For example, if the server shuts down the system before creating a stable archive success, the server will try to r e-archive in the file after restarting (assuming that the archive is enabled). If the archive command or library encounters existing files, if the WAL file has the same content as the existing file and the existing file is completely stored, you should return 0 or True status. If the existing file contains different content from the archive WAL file, the archive command or library must return a status or false status other than zero.

In the UNIX command example, the overwrite of existing files is avoided by including another test step. In some UNIX platforms, the CP has a-i-like switch and can do the same in more detail. (In particular, GNU CP is used wit h-i and the destination file already exists, returns the null state, but this is not a desirable operation).

When planning an archive setup, consider the case where the archive command or library fails many times, such as when an operator intervention is required, or the archive is insufficient in memory. For example, if you write it on the tape without automatic replacement, if the tape is full, you will not be able to archive until the tape is replaced. When the tape is full, other archives cannot be done until the tape is replaced. It is necessary to report the error status and the request for human operators properly, so that the situation is resolved quickly. PG_wal/ directory keeps placing a WAL partition file until the situation is resolved. (If the file system containing pg_wal/ is full, PostgreSQL executes the end of Panic. The committed transaction is not lost, but the database remains offline until the area is released). < SPAN> In rare cases, PostgreSQL may try to r e-archive a previously archived WAL file. For example, if the server shuts down the system before creating a stable archive success, the server will try to r e-archive in the file after restarting (assuming that the archive is enabled). If the archive command or library encounters existing files, if the WAL file has the same content as the existing file and the existing file is completely stored, you should return 0 or True status. If the existing file contains different content from the archive WAL file, the archive command or library must return a status or false status other than zero.

When planning an archive setup, consider the case where the archive command or library fails many times, such as when an operator intervention is required, or the archive is insufficient in memory. For example, if you write it on the tape without automatic replacement, if the tape is full, you will not be able to archive until the tape is replaced. When the tape is full, other archives cannot be done until the tape is replaced. It is necessary to report the error status and the request for human operators properly, so that the situation is resolved quickly. PG_wal/ directory keeps placing a WAL partition file until the situation is resolved. (If the file system containing pg_wal/ is full, PostgreSQL executes the end of Panic. The committed transaction is not lost, but the database remains offline until the area is released). In rare cases, PostgreSQL may try to r e-archive of the previously archived WAL file. For example, if the server shuts down the system before creating a stable archive success, the server will try to r e-archive in the file after restarting (assuming that the archive is enabled). If the archive command or library encounters existing files, if the WAL file has the same content as the existing file and the existing file is completely stored, you should return 0 or True status. If the existing file contains different content from the archive WAL file, the archive command or library must return a status or false status other than zero.

The speed of the archive command and library command is not important because the server can keep up with the average speed for creating WAL data. Even if the archive processing is slightly delayed, normal operation will continue. If the archive processing is significantly delayed, the amount of data lost in the event of a disaster will increase. In addition, a large amount of partition files that have not yet been arched to PG_WAL/ Directory may be more than the available disk space. It is recommended to monitor archive processing to make sure that archive processing is working as intended.

When writing an archive command or library, assume that the archive file name is up to 64 characters, and you can include any combination of characters, numbers, and ASCII dots. You do not need to hold the original relative path ( %p), but you need to hold the file name ( %f).

The WAL archive can restore the changes made for the PostgreSQL database data, but cannot be restored to the configuration file (PostgreSql. conf, pg_hba. conf, pg_ident. conf). The configuration file should be stored in the backup procedure of the normal file system. See Section 19. 2 for how to migrate the configuration file.

Archive commands and functions are called only for completed WAL segments. Therefore, a server that has only a little WAL traffic (or the period of a delayed period) may have a long delay between the completion of the transaction and the safe logging for file storage. To set the oldness of the un archived data, you can set up Archive_Timeout and forced the server to switch to a new WAL partition file at least. Note that files archived early by forced switching are the same length as the full file. Therefore, it is not wise to set the expiration date of the archive very short. The setting of archive_timeout is usually appropriate for about 1 minute.

If you want to archive as soon as possible, you can use pg_switch_wal to manually switch partition switching. Table 9. 95 shows other utility functions related to WAL management.

If WAL_LEVEL is minimal, as described in section 14, some SQL statements are optimized to avoid WAL logging. 4. 7. If these sentences are executed, if archives and stream playback are enabled, Wal does not contain enough information to remove the file. (このため、WAL_LEVEL はサーバ起動時にのみ変更できます。ただし、Archive_Command と Archive_Library は設定ファイルのリロードで変更できます。シェル経由でアーカイブを行っていて、一時的にアーカイブを停止したい場合は、Archive_Command を It is one way to set up an empty string ('') until the work file is restored.

25. 3. 2. Bass#backup

The easiest way to execute the basic backup is to use the PG_BaseBackup tool. The PG_BaseBackup tool can create a base line backup as a normal file or tar file. If you need more flexibility than pg_basebackup, you can also create a base line backup using a lo w-level API (section 25.).

You don't have to worry about the time it takes to create a base line backup. However, if you are driving a server normally by disabling Full_page_writes, you may notice a decrease in performance because the backup executed by Full_page_writes is effectively executed during the backup operation.

To use a backup, you need to hold all Wal Partition files created during the backup and backup of the file system. This file is named after the name of the first WAL partition file required to backup the file system. For example, if the WAL boot file is 0000000100001234000055CD, the backup history file is a name like 00000001001234000055CD. 007c9330. backup. If you archive the file backup file and the Wal Partition file (specified in the backup history file) used while backup, the archive of the name is small to restore the file system backup. All WAL partitions are unnecessary and can be deleted. However, it is necessary to consider retaining multiple backups to ensure data recovery.

The backup history file is only for RA short text files. This file includes the tag string specified in pg_baseBackup, the start time of the backup, the end time, and the Wal part. If you use a tag to identify the associated dump files, this history file alone should be restored which dump files should be restored.

If you need a restore, you need to consider how long it takes to recover. The system needs to reconstruct all WAL segments, which takes a long time after the last backup.

25. 3. 3. Creation of incremental backup #.

You can get an incremental backup by specifying th e-inCremental option using pg_basebackup. As an argument of the CREMENTAL, you must specify a previous backup from the same server. In the backup of the result, the no n-relevant files are included, but some related files are only metadata to reconstruct the blocks changed from the previous backup and the current version of the file. It may be replaced with a smaller sharp file including.

The server uses WAL summary to know which blocks need to be backed up. The WAL summary is stored in the data directory in the PG_wal/Abstracts directory. If there is no necessary summary file, it will fail to get an incremental backup. The summary in this directory must cross all LSNs, from the previous backup original LSN to the original LSN of the current backup. Since the server searches for the WAL summary immediately after establishing the current backup LSN, the necessary summary files are probably not on the disk immediately, but the server waits for the shortage to be displayed. 。 This is also useful if the WAL summary process is delayed. However, if the necessary files have already been deleted or the WAL summary not covers quickly, incremental backup will fail. < SPAN> Backup history files are RA short text files only. This file includes the tag string specified in pg_baseBackup, the start time of the backup, the end time, and the Wal part. If you use a tag to identify the associated dump files, this history file alone should be restored which dump files should be restored.

If you need a restore, you need to consider how long it takes to recover. The system needs to reconstruct all WAL segments, which takes a long time after the last backup.

25. 3. 3. Creation of incremental backup #.

The server uses WAL summary to know which blocks need to be backed up. The WAL summary is stored in the data directory in the PG_wal/Abstracts directory. If there is no necessary summary file, it will fail to get an incremental backup. The summary in this directory must cross all LSNs, from the previous backup original LSN to the original LSN of the current backup. Since the server searches for the WAL summary immediately after establishing the current backup LSN, the necessary summary files are probably not on the disk immediately, but the server waits for the shortage to be displayed. 。 This is also useful if the WAL summary process is delayed. However, if the necessary files have already been deleted or the WAL summary not covers quickly, incremental backup will fail. The backup history file is only for RA short text files. This file includes the tag string specified in pg_baseBackup, the start time of the backup, the end time, and the Wal part. If you use a tag to identify the associated dump files, this history file alone should be restored which dump files should be restored.
If you need a restore, you need to consider how long it takes to recover. The system needs to reconstruct all WAL segments, which takes a long time after the last backup.

25. 3. 3. Creation of incremental backup #.

You can get an incremental backup by specifying th e-inCremental option using pg_basebackup. As an argument of the CREMENTAL, you must specify a previous backup from the same server. In the backup of the result, the no n-relevant files are included, but some related files are only metadata to reconstruct the blocks changed from the previous backup and the current version of the file. It may be replaced with a smaller sharp file including.

The server uses WAL summary to know which blocks need to be backed up. The WAL summary is stored in the data directory in the PG_wal/Abstracts directory. If there is no necessary summary file, it will fail to get an incremental backup. The summary in this directory must cross all LSNs, from the previous backup original LSN to the original LSN of the current backup. Since the server searches for the WAL summary immediately after establishing the current backup LSN, the necessary summary files are probably not on the disk immediately, but the server waits for the shortage to be displayed. 。 This is also useful if the WAL summary process is delayed. However, if the necessary files have already been deleted or the WAL summary not covers quickly, incremental backup will fail.

When restoring an incremental backup, you need not only the first backup, but also all previous backups necessary to provide the blocks skipped by the incremental backup. See pg_combinebackup for more information about this requirement. Note that there are limitations to using pg_combinebackup if the cluster's checksum state has changed.

Note that all requirements for using full backups also apply to incremental backups. For example, you need all WAL partition files created during and after the file system backup, and all associated WAL history files, and you must create a recovery. Having old backups available at restore time and using pg_combinebackup are additional requirements in addition to all the other requirements. Note that PostgreSQL has no built-in mechanism for figuring out which backups you still need as a basis for restoring subsequent incremental backups. You must manage the relationship between full and incremental backups yourself, and do not delete old backups if you need them to restore a later incremental backup.

Incremental backups usually only make sense for relatively large databases where most of the data does not change, or changes only slowly. For small databases, it is simpler and easier to manage to ignore incremental backups and take full backups. For large databases with large changes, incremental backups will never be much less than full backups.

An incremental backup is only possible if the replay starts from a checkpoint later than the previous backup on which it depends. When taking incremental backups on the master, this condition is always met, since each backup triggers a new checkpoint. In standby mode, the replay starts from the most recent restart point. For this reason, an incremental backup on a standby server may fail if there has been little activity since the last backup, since a new restart point may not have been created.

25. 3. 4. Base Backup Using Low-Level API #1

Instead of creating a full or incrementable base backup using pg_baseBackup, you can create a base backup using a lo w-level API. This procedure has several procedures than the pg_baseBackup method, but it is relatively simple. It is very important to perform these steps in order, confirm that a certain procedure has been successful, and then proceed to the next step.

You can execute multiple backups at the same time (both backups started using this backup API and backup started using PG_BaseBackup).

Make sure the WAL archive is working and working.

Log in to the server (any database) as a user with pg_backup_start execution authority (a user with a superuser or a function) and execute the command:

Select pg_backup_start (label = & amp; gt; gt; 'label', fast = & amp; gt; false);

Select * from pg_backup_stop (Wait_for_archive = & amp; gt; true);

25. 3. 4. 1. Back up the data directory #.
Some of the file system backup tools will display warnings and errors when the files you are trying to copy during the backup are changed. This situation is normal and not an error when taking an active database base backup. However, it is necessary to distinguish this type of complaint from actual errors. For example, depending on the RSync version, you can return a different end code called "Source file has disappeared", and you can write a driver script so that this terminated code is accepted as a case without an error. Also, depending on the GNU Tar version, if the file is cut down while the file is copied the file, the error code that cannot be distinguished from the fatal error is returned. Fortunately, after the GNU Tar version 1. 16 or later, it will be finished in 1 if the file is changed during the backup, and for other errors. Gnu Tar 1. 23 or later, -warning = no-file-changed --warning = no-filE-Removed warning options can be hidden.
Make sure that all files are included in the backup that contains all files in the database cluster directory (/USR/local/pgsql/data). If you are using a table area that is not under this directory, be sure to include them (also make sure that the backup is archiving the symbolic link as a link, otherwise, if not, depending on the restore. Will be destroyed).
However, the files in the cluster pg_wal/ subdirectory must be excluded from the backup. This small adjustment is worth it because it reduces the risk of errors during recovery. This setting is easy if pg_wal/ is a symbolic link that points somewhere outside the cluster directory. You may also want to exclude Postmaster. pid and Postmaster. opts. Postmaster. pid and Postmaster. opts recorded information on the current Postmaster, not the postmaster that ultimately uses this backup. (These files confuse PG_CTL).
The files in the cluster PG_REPLSLOT/ directory may be omitted from the backup so that the replication slot in the primary does not become part of the backup. Otherwise, if you use a backup for standby, the standby WAL file may be retained indefinitely, and the client that uses these replication slots is not standby, but primary state. Log in to the slot and update it, causing primary abnormalities to enlarge. Even if the backup is used only for creating a new primary, it is not particularly useful to copy a replication slot.
Pg_dynshmem/, pg_notify/, pg_serial/, pg_snapshots/, pg_stat_tmp/, pg_Stat_tmp/, pg_subtrans/The contents of each of the directors/pg_subtrans/are initialized when the metadata is started, so it can be omitted from the backup.
Files and directors that start with pgsql_tmp can be omitted from the backup. These files are deleted when the postdoc is started, and the directory is rebuilt as needed.
The pg_internal. init file can be omitted from the backup every time a file is found. These files contain cached relevant data and are always rebuilt during recovery. < SPAN> However, the files in the pg_wal/ subdivision of the cluster must be excluded from the backup. This small adjustment is worth it because it reduces the risk of errors during recovery. This setting is easy if pg_wal/ is a symbolic link that points somewhere outside the cluster directory. You may also want to exclude Postmaster. pid and Postmaster. opts. Postmaster. pid and Postmaster. opts recorded information on the current Postmaster, not the postmaster that ultimately uses this backup. (These files confuse PG_CTL).
The files in the cluster PG_REPLSLOT/ directory may be omitted from the backup so that the replication slot in the primary does not become part of the backup. Otherwise, if you use a backup for standby, the standby WAL file may be retained indefinitely, and the client that uses these replication slots is not standby, but primary state. Log in to the slot and update it, causing primary abnormalities to enlarge. Even if the backup is used only for creating a new primary, it is not particularly useful to copy a replication slot.
Pg_dynshmem/, pg_notify/, pg_serial/, pg_snapshots/, pg_stat_tmp/, pg_Stat_tmp/, pg_subtrans/The contents of each of the directors/pg_subtrans/are initialized when the metadata is started, so it can be omitted from the backup.

Files and directors that start with pgsql_tmp can be omitted from the backup. These files are deleted when the postdoc is started, and the directory is rebuilt as needed.

The pg_internal. init file can be omitted from the backup every time a file is found. These files contain cached relevant data and are always rebuilt during recovery. However, the files in the cluster pg_wal/ subdirectory must be excluded from the backup. This small adjustment is worth it because it reduces the risk of errors during recovery. This setting is easy if pg_wal/ is a symbolic link that points somewhere outside the cluster directory. You may also want to exclude Postmaster. pid and Postmaster. opts. Postmaster. pid and Postmaster. opts recorded information on the current Postmaster, not the postmaster that ultimately uses this backup. (These files confuse PG_CTL).

The files in the cluster PG_REPLSLOT/ directory may be omitted from the backup so that the replication slot in the primary does not become part of the backup. Otherwise, if you use a backup for standby, the standby WAL file may be retained indefinitely, and the client that uses these replication slots is not standby, but primary state. Log in to the slot and update it, causing primary abnormalities to enlarge. Even if the backup is used only for creating a new primary, it is not particularly useful to copy a replication slot.

Pg_dynshmem/, pg_notify/, pg_serial/, pg_snapshots/, pg_stat_tmp/, pg_Stat_tmp/, pg_subtrans/The contents of each of the directors/pg_subtrans/are initialized when the metadata is started, so it can be omitted from the backup.

Files and directors that start with pgsql_tmp can be omitted from the backup. These files are deleted when the postdoc is started, and the directory is rebuilt as needed.

The pg_internal. init file can be omitted from the backup every time a file is found. These files contain cached relevant data and are always rebuilt during recovery.

The backup tag file includes the name of the tag string specified in pg_backup_start, the time when the pg_backup_start is executed, and the name of the WAL startup file. Therefore, you can check the interior of the backup file and accurately determine which backup session comes from a dump file. The tablespace map file contains the symbolic link name in the PG_TBLSPC/ directory and the full path of each symbolic link. These files are not just information. The existence and content of these files is very important for the system recovery process to function properly.

It is also possible to backup while the server is down. In this case, you cannot use pg_backup_start or pg_backup_stop, so you need to track what you are backed up and how far the related Wal files are going back. In general, it is best to follow the continuous archive procedure above.

NOTE

By the way, the worst situation occurs, and it is necessary to recover from the backup. The procedure is as follows:

Stop the server.

If there is space for that, copy the cluster data directory as a whole and a temporary place to be needed later. Note that this precautionary measure requires a free space on the system that can hold two copies of the existing database. If you don't have enough free space, you need to save at least the contents of the pg_wal subdirectory of the cluster.

Delete all the existing files and subdirectories under the cluster data directory and under the root directory of the accelerator site you are using.

If you want to restore a complete backup, you can restore the database file directly into the target directory. Make sure you are restored in the correct permission with the correct owner (not the route but the database system user). If you are using a tabl e-ring space, make sure that the symbolic link in PG_TBLSPC/ is correctly restored.

When restoring an incremental backup, you must restore the incremental backup and all previous backups that are directly or indirectly dependent on the machine performing the restore. These backups should be in a separate directory, not the final destination directory on the operating server. Once this is done, use pg_combinebackup to take the data from the full backup and all subsequent incremental backups and write a synthetic full backup to the destination directory. As above, make sure that tablespace permissions and links are correct.

Delete any files that exist in pg_wal/. These came from a filesystem backup and are probably old and not up to date. If you have not archived pg_wal/, be sure to recreate it with the right permissions and restore them as symbolic links if you had them set up this way previously.

If you unarchived the WAL section files you saved in step 2, copy them into pg_wal/ (it's best to copy them rather than move them, so that if something goes wrong and you have to start over, you still have the unmodified files).

Set your recovery configuration settings in postgresql. conf (see Section 19. 5. 5) and create a recovery. signal file in the cluster data directory. You can also temporarily modify pg_hba. conf to prevent ordinary users from logging in until you are sure that recovery is successful.

Start the server. The server will enter recovery mode and proceed to read any archived WAL files it needs. If recovery is terminated by an external error, you can resume recovery by simply restarting the server. Once the recovery process is complete, the server will remove the recovery signal (to prevent accidentally re-entering recovery mode later) and begin normal database operations.

Check the contents of the database to be sure it has recovered to the desired state. If not, return to step 1. If you are happy, you can allow users to log in by changing pg_hba. conf back to its sane state.

The important thing in this is to set a recovery setting to describe how to recover and how much recovery to execute. Like Archive_command, this is a shell command character string. This string can include%f,%f is replaced with the target Wal file name, and the%p is replaced with the path name to copy the WAL file (the path name is the current work directory, that is, the cluster. It is a relative path from the data directory). If you need to embed an actual%character in the command, describe%. The simplest and convenient commands are as follows:

Restore_command = 'CP/Mnt/Server/Archivedir/ %F %P'.

Of course, you can use more complicated things, and you can use a shell script to insert an appropriate tape into the operator.

It is important that the terminal condition returns the command to failure. This command is called by requesting files that are not in the file. You should return anything other than zero when requested. This is not an error condition. The exception is that the search is canceled and the server is not launched when the command ends with a signal (except for the Sigterm used as part of the end of the database server) or an error from the shell (such as not finding a command).

Not all files required are WAL partition files. It is also necessary to assume the request for a file with a suffix. Also note that the base name of the%P pass is different from%f.

Wal sections that cannot be found in the file can use recent no n-architecture parts by pg_wal/? However, it is desirable to use parts available from the archive in the PG_wal/ file. < SPAN> The important thing in this is to set a recovery setting that describes how to recover and how much recovery you want to do. Like Archive_command, this is a shell command character string. This string can include%f,%f is replaced with the target Wal file name, and the%p is replaced with the path name to copy the WAL file (the path name is the current work directory, that is, the cluster. It is a relative path from the data directory). If you need to embed an actual%character in the command, describe%. The simplest and convenient commands are as follows: Restore_command = 'CP/Mnt/Server/Archivedir/ %F %P'.

Of course, you can use more complicated things, and you can use a shell script to insert an appropriate tape into the operator.

It is important that the terminal condition returns the command to failure. This command is called by requesting files that are not in the file. You should return anything other than zero when requested. This is not an error condition. The exception is that the search is canceled and the server is not launched when the command ends with a signal (except for the Sigterm used as part of the end of the database server) or an error from the shell (such as not finding a command).

Restore_command = 'CP/Mnt/Server/Archivedir/ %F %P'.

Of course, you can use more complicated things, and you can use a shell script to insert an appropriate tape into the operator.

Wal sections that cannot be found in the file can use recent no n-architecture parts by pg_wal/? However, it is desirable to use parts available from the archive in the PG_wal/ file.

Usually, the restore is advanced through all available WAL segments and restore the database at the current time (or as of when possible from the available WAL segment). Therefore, the regular restore ends with the message "I can't find the file." The accurate text of the error message depends on the Restore_command option. At the start of recovery, an error message to a file named 00000001. history may be displayed. This is also normal, not a problem in a simple recovery situation. See Section 25. 3. 6.

The stop point must be the expiration date of the bass line backup, that is, after the expiration date of PG_BACKUP_STOP. You cannot use the bass line backup to recover from the progress of the backup. (To restore at such a time, you need to return to the previous bass line backup and proceed from there).

If a damaged Wal data is detected, the recovery will stop at that point and the server will not start. In such a case, the recovery process can be resumed from the beginning and identifying the "recovery target" before the damaged point, the recovery can be completed successfully. If the recovery fails for external reasons, such as a system error or a WAL file, the recovery can be restarted simply and resumed almost from the failure. The restart of recovery works in the same way as checkpoints in normal movements. The server regularly forced all conditions to the disk, updated the pg_control file, indicating that there is no need to r e-scan the already processed Wal data.

To address this problem, PostgreSQL has the concept of a schedule. Each time a file recovery is completed, a new schedule is created to keep track of the set of WAL files created after that recovery. To ensure that a new schedule does not overwrite WAL data created by a previous schedule, the schedule ID number is part of the WAL segment file name. For example, in the WAL file name 000000010000001234000055CD, the leading 00000001 is the timeline ID in hexadecimal. (Note that in other contexts, such as server log messages, timeline IDs are usually displayed in decimal.)

In fact, it is possible to submit multiple different schedules. This may seem like a useless feature, but it is often a lifesaver. Imagine a situation where you don't know which one to recover from, and you have to do multiple point recoveries by trial and error until you find the best place to leave the old story. Without a timeline, this process quickly creates a mess of unknowns. With a timeline, you can recover to any previous state, including the state of a timeline branch you previously abandoned.

River Rock Casino Resort Hotel

Located along the spectacular flare river on the west coast, relax in a bright and modern deluxe room, or a luxurious suit with sophisticated furniture. River Rock Hotel's guest rooms, such as romantic trips, accommodation for the next business meeting, and exciting weekends with friends, will surely be satisfied with the luxury of relaxation. I will do it.

River Rock Casino Resort Hotel

Flexible cancellation

Characteristics of the room

Entertainment

Characteristics of the room

Entertainment

Characteristics of the room

Entertainment

Located in the hotel tower, the barrie r-free on e-king bedroom is convenient because it is connected to a casino tower with a skirt. The rooms are a hobby interior, with classic furniture and modern amenities.

1 Bedroom Suit e-Casino Tower

Characteristics of the room

Entertainment

King size or queen size beds are available in the bedroom and queen size sofa beds are available in the living room. In all rooms, there is a TV room (32 inch LCD) and the living room (42 inch LCD), and there is a hig h-speed desktop that can connect to the Internet.

2 Bedroom Suit e-Casino Tower

Characteristics of the room

Entertainment

King size or queen size beds are available in the bedroom and queen size sofa beds are available in the living room. In all rooms, there is a TV room (3 2-inch LCD) and the living room (42 inch LCD), and it has a desktop with hig h-speed Internet connection.

Executive 1 Bedroom Suit e-Casino Tower

Characteristics of the room

Entertainment

River Rock Casino Resort has prepared floors that can upgrade the executive living room without expensive. All executive suites have a diggin g-type living room, with a 4 2-inch thin LCD wal l-mounted TV. On the executive floor, you can enjoy privacy only for key access to the elevator.

Executive 2 Bedroom Suit e-Casino Tower

Characteristics of the room

Entertainment
River Rock Casino Resort has specified one floor to upgrade an executive life without expensive. All executive suites include a diggin g-type living room and a 4 2-inch thin LCD wal l-mounted TV. On the executive floor, you can enjoy privacy only for key access to the elevator.
Penthouse Suite 1 Roo m-Tower Kitchen
Characteristics of the room
Entertainment
The spacious on e-bedroom penthouse suite allows you to enjoy the wonderful view of the Fraser River. Both the celebration of a special day and those who are looking for the ultimate luxury can be immersed in unparalleled comfort and elegance.
2 Bed Room Retai Adult Roo m-Cabinet Tower

Characteristics of the room

Entertainment
The spacious tw o-bedroom penthouse suite allows you to enjoy a wonderful panoramic view of the flarer river. Both the celebration of a special day and those who are looking for the ultimate luxury can be immersed in unparalleled comfort and elegance.

Presidential suite

Characteristics of the room

Entertainment
The President's Suite allows you to experience the perfect fusion of luxury and entertainment. From the spectacular starlight ceiling of the bedroom to the billiard platform, whether you invite friends, celebrate a special day, or just seek the ultimate relaxation, we have forgotten our hotel's presidential suite. We promise a no experience.
Pe t-friendly

Pets are families. The "fluffy" amenity at our hotel promises a "fun" stay for both customers and fou r-legged companionship.

*Some policies and restrictions apply.

Pool and gym
It is ideal for swimming with a water slider, swimming leisurely, or splashing with your family. For customers who want to maintain fitness habits, we will meet the needs of all workouts at the Fitness Center with stat e-o f-th e-art exercise equipment!
Open every day from 6 am. Business hours are subject to change.
Currently, the sink is closed for maintenance. Pools and hot bath facilities are still available. note that.

A luxurious spa that heals your mind and body, such as facial, massage, hydrotherapy, and so on. Six private treatment rooms are available, so you can wear a luxurious bathrobe and have a blissful time at Absolute Spa.

Flexible event space at our hotel, such as company meetings, social gathering, and dream weddings, can be used for any occasion. From the intimate conference room to the large banquet hall, each space is fully equipped with a stat e-o f-th e-art technology that is perfect and promised to have a seamlessly memorable event.

Richmond
River Rock is located in an ideal place with a beautiful environment on the shores of the Flare River. The resort facility is built to enhance the beautiful reverb lock site and the west coast. If you explore the terrain of the resort, you will soon be filled with various activities that will never run out of the day or night.
The Richmond Center, Landdown Center, and Abadine Center are located in the Canadian Line system at several stations from River Rock. If you enjoy the latest fashion and gourmet in North America and Asia, visit these three places.
Steveston Village is a picturesque fishing village in South Richmond, with views of the Strait of Georgia and Vancouver Island from Garry Point Park and beach. For those interested in Richmond's colorful past and history, Georgian Bay Cannery National Historic Site and Britannia Shipyards National Historic Site are great options.
Need more ideas? Check out Richmond Tourism's destination guides.
Check-in requirements

Elim Rim - Journalist, creative writer

Last modified 04.05.2025

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