p4 pull

Retrieve metadata or versioned files from a P4 Server master server to a replica, or display status information about pending transfers, although there is a special syntax for a commit server to pull from a replica. In most situations, server replication with p4 pull is preferable to p4 replicate.

Syntax for a replica to pull from a commit server

p4 [g-opts] pull [-J prefix] [-i interval] [-b interval] [-T excluded_tables] [-P serverid]
p4 [g-opts] pull -u [-i interval -b interval --batch=number --min-size=number  --max-size=number --trigger]
p4 [g-opts] pull -l [-s | -j [-J prefix] [-v]]
p4 [g-opts] pull -d -f file -r revision
p4 [g-opts] pull -L [-i interval]
p4 [g-opts] pull -R [file]
p4 pull -T

Syntax conventions

Syntax for a commit server to pull from a replica

p4 pull -u -t target [-i interval -b interval]

Description

Except for testing purposes, p4 pull is rarely run from the command line. Instead, set the startup.N configurable to start the p4 pull processes every time the replica server starts.

The p4 pull command provides syntax variants, such as:

  • p4 [g-opts] pull [-J prefix] [-i interval] [-b interval] [-T excluded_tables] [-P serverid]
    Retrieves journal records from a target server specified by P4TARGET

  • p4 [g-opts] pull -u [-i interval -b interval --batch=number --min-size=number --max-size=number --trigger]
    Retrieves file contents from a target server specified by P4TARGET

  • p4 [g-opts] pull -l [-s | -j [-J prefix]]
    Displays information about scheduled file transfers.

  • p4 [g-opts] pull -d -f file -r revision
    Cancels a scheduled file transfer.

  • p4 [g-opts] pull -L [-i interval]
    Specifies that journal records be retrieved from a local journal file (produced by the p4 journalcopy command) rather than from the journal file of the target server. These records are then written to the replica’s database. For a standby replica for failover.

p4 [g-opts] pull -R

retries all failed transfers.

p4 [g-opts] pull -R file

retries the failed transfer of the specified file.

The state file

When you stop either the master server or a replica server, the replica server tracks the most recent journal position in a small text file called the state file. By default, the state file is named state and resides in the replica server’s root directory. You can specify a different file name by setting the statefile configurable with p4 configure.

Retrieving journal and file content

The p4 pull command instructs the current replica server to retrieve either journal records or file contents from a target server specified by P4TARGET. Some replica servers do not need both journal records and file contents: for example, if you are creating a replica to help with offline checkpointing, you do not need to transfer file contents.

To replicate both metadata and file contents, you must run at least two p4 pull commands:

  • one p4 pull (without the -u option) to replicate the master server’s metadata, and

  • at least one p4 pull (with the -u option) to replicate the server’s versioned files.

Setting the rpl.compress configurable allows you to compress journal record data that is transmitted using p4 pull.

Getting status information

Use the -l option to display a list of files that are scheduled for transfer. If -s is specified along with -l, a summary of scheduled file transfers is displayed. An additional line specifies the oldest changelist number that has at least one pending transfer. This provides a clue about how far the replica is lagging in its transfer of archive content.

An operator can run the p4 journalcopy -l, p4 pull -l -j, and p4 pull -l -s commands. This makes it possible for an operator to confirm the state of a replica.

File transfers: n active/m total, bytes: nnn active/mmmmm total.
Oldest change with at least one pending file transfer: n

For example, the following output:

File transfers: 1 active/63 total, bytes: 745 active/23684 total.

Tells us that there are 63 pending archive file transfers, one of which is currently active; and there are 23,684 bytes needed to be transferred of which 745 are currently actively being transferred.

If -j is specified with -l, report the current journal state at the current replica and its master, the last time the state file was modified, and the server’s local time and time zone. For example:

Current replica journal state is: Journal jjj, Sequence: sssss.
Current master journal state is: Journal jjj, Sequence: sssss.
The statefile was last modified at: 2012/01/10 14:23:23.
The Server time is currently: 2012/01/10 14:23:23 -0800 PST

The value of jjj specifies a journal number; sssss specifies an offset in that journal.

Options

-b interval

Specify a polling interval in seconds for retries after failed retrieval attempts. If you do not specify this option, the pull is retried after 60 seconds.

-u

Transfer archive files Versioned files that users have submitted to a depot. instead of journal records. If you omit this option, the command retrieves journal records. Multiple p4 pull -u commands can be active on a single replica server.

--batch number

Use this option to specify the number of files a pull thread should process in a single request. For high-latency configurations, providing a larger value than the default might improve archive transfer speed for large numbers of small files.

Default: 1

--min-size number

 

The --min-size and --max-size options:

  • must be used with the -u and --batch
  • can be used with pull commands that create different pull threads for files with different sizes

Pull threads called with these options pull files within the data size range specified with these options. The default size unit is bytes, but K, M, G, and T modifiers can also be used, such as 2K. See Example for min and max sizes.

--max-size number

 

-d -f file -r revision

Cancel a pending file content transfer, where file and revision refer to a depot file and a specific revision. This is not the normal P4 Server file and revision data, but rather the archive file and revision. Use the p4 pull -l command to get the correct file name and revision.

The archive revision reported by the p4 pull -l command typically has a 1. prefix. For example, the p4 pull -l command might report the archive revision as 1.38 for the transfer of revision 38 of a file. Then, to cancel the transfer of revision 38 of the file:

p4 pull -d -f //project1/big.mpeg -r 1.38

-i interval

Specify a polling interval in seconds for content retrieval. The smallest interval is one second. If you omit this option, the command runs once and exits.

If you set the interval to be 0, the master server advises the replicate as soon as new data becomes available. This way the replicated server can pull new data with no delay.

-J prefix

Specify a prefix for the rotated journal file; overrides journalPrefix configurable.

If your master server uses a non-default rotated journal location, this allows you to specify the rotated journal file location on the master server.

-l

List files that are scheduled for transfer.

The archive revision reported by the p4 pull -l command typically has a 1. prefix. For example, the p4 pull -l command might report the archive revision as 1.38 for the transfer of revision 38 of a file.

If you use this option on an edge server or build server that has lbr.replication=cache set, you might see several entries because of parallel file transfers.

p4 pull -l (and p4 pull -ls) can be done on a commit server to monitor reverse replication as a result of submits to edge servers.

-l -j [-v]

Display the current journal state on the replica and the master.

During the process of journal rotation on the master, the output of p4 pull -l -j can have three lines of output: line 1 for the replica journal’s current state, line 2 for the state of the corresponding journal on the master, and line 3 for the new journal on the master, data from which has not yet arrived at the replica.

p4 pull -l -j -v run against a replica reports the total number of bytes of journal that the upstream server has yet to deliver, potentially across multiple journal rotations.

-l -s

Display a summary of scheduled file content transfers. If this list is unexpectedly long or is growing, you might consider running additional p4 pull -u commands.

-L

Retrieve journal records from a local journal file, normally produced by the p4 journalcopy command.

-P serverid

Filter data from serverid according to the ArchiveDataFilter: and ClientDataFilter: and RevisionDataFilter fields in the specified server’s p4 server form.

In older releases, this option confirmed filters defined in the filter spec. This confirmation is no longer required. The option is retained for continued support of earlier releases. It can also be useful if you want to share filter configuration among multiple servers. In this case, the serverid refers to the server whose filter definitions you want shared.

For compatibility with earlier releases of P4 Server, you can also supply filter patterns directly within this field by using the same syntax used by the p4 export. However, specifying a server and using fields in the p4 server form is better because the behavior of a replica that makes use of multiple p4 pull commands with inconsistent or conflicting -P filterpattern arguments is undefined.
-R

p4 pull -R file retries the failed transfer of the specified file.

p4 pull -R retries ALL failed transfers.

The -d option can be used to remove pending or failed file transfers individually, this option will instead reset the retry count of failed transfers so that subsequent pull operations can retry the transfers.

-T excluded_tables

Supply a list of database tables (for example, db.have and db.working) to exclude from the replica’s journal records. The table names must begin with db., following the naming convention used for database files in the server root directory.

To specify multiple tables, double-quote the list and separate the table names with spaces. Table names can also be separated by commas. For example, -T db.have,db.working or -T "db.have db.working".
--trigger

The --trigger option is used with a pull-archive trigger to transfer files using an alternative file transfer mechanism from within the trigger. This option is only used in a multi-server environment and is not supported for RCS storage. The configurable pull.trigger.dir must be set to a location to write temporary files. It is also recommended to set the configurable lbr.replica.notransferto =1 to suppress "on demand" file transfer.

-t target

On the commit server, if p4 pull -l indicates that the commit server is not able to pull the archives from the edge, issue the following command manually:

p4 pull -u -t target

where:

  • -u enables archive transfer
  • target specifies the ExternalAddress field of the server spec of the edge. (See p4 server)

g-opts

See Global options.

Usage notes

Can File Arguments Use Revision Specifier? Can File Arguments Use Revision Range? Minimal Access Level Required

N/A

N/A

super

the -lj and -ls options are available to an operator user

For more about configuring P4 Server to run in a replicated environment, see Replication in the P4 Server Administration Documentation.

Example for min and max sizes

startup.2=pull -u -i 1  --batch=1000 --min-size=1 --max-size=2047
startup.3=pull -u -i 1  --batch=5 --min-size=2048 --max-size=4096
startup.4=pull -u -i 1  --batch=5 --min-size=4097

Related commands

To configure a P4 Server to run a set of p4 pull commands upon startup.

p4 configure

To replicate metadata from one server to another

p4 replicate

To display journal or checkpoint records in raw form

p4 export

To copy journal data to a replica’s local file system.

p4 journalcopy