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ibrix_cfrjob

Starts and stops the replication process and monitors the state of remote replication activity.

Description

NOTE: Remote replication must be configured before replication jobs can be started.

Remote replication provides a transparent method to replicate changes in a source file system on

one cluster to a target file system on either the same cluster or a second cluster. The remote

replication service has two modes: continuous and run-once. For detailed information about these

modes, see the HP StorageWorks File Serving Software File System User Guide.

Replication is started and stopped from the source cluster with ibrix_cfrjob -s. When a

replication job is started for a file system, ibrix_cfrjob dynamically generates a new job with

a unique job id for the replication instance.

Use the ibrix_cfrjob -o option for the run-once mode to synchronize single directories or

entire file systems on the source and target in a single pass.

Multiple run-once jobs can be started simultaneously. The jobs terminate on their own when the

synchronization is completed. Any job can be stopped manually if necessary.

While replication jobs ensure that file systems remain synchronized, run-once jobs can experience

small variations if there is I/O activity on the source during the job. For example, if the source file

foo.txt is written on the target and is then edited or deleted while the run-once job is still active,

the changes to foo.txt are not made on the target. The foo.txt file on the target remains as

written by the run-once job. When the job is completed, the directories containing foo.txt are

not fully synchronized.

NOTE: If a source or target file system is unmounted and ibrix_fsck is run to check it, a full

resynchronization is recommended.

Synopsis

Start a remote replication task to a remote cluster:

ibrix_cfrjob -s -f SRC_FSNAME [-o [-S SRC_DIR] ] –C TGT_CLUSTERNAME –F

TGT_FSNAME [-P TGTDIR]

The -f option specifies the source file system to be replicated. The -C option specifies the target

cluster. If you are replicating to a directory on the target, -P specifies the target directory. If the

-P option is not used, the mount point of the target filesystem will be used as the root of the

replicated data.

Use the -o option for run-once jobs. This option can be used to synchronize single directories or

entire file systems on the source and target in a single pass. If you do not specify a source directory

with the -S option, the replication starts at the root of the file system. The run-once job terminates

after the replication is complete; however, the job can be stopped manually, if necessary.

Start an intra-cluster remote replication task:

ibrix_cfrjob -s -f SRC_FSNAME [-o [-S SRCDIR]] -F TGT_FSNAME [-P TGTDIR]

The command starts a continuous or run-once intra-cluster replication task for file system

SRC_FSNAME. The -F option specifies the name of the target file system (the default is the same

as the source file system). The -P option specifies the target directory under the target file system

(the default is the root of the file system).

Use the -o option to start a run-once job. The -S option specifies a directory under the source file

system to synchronize with the target directory.

Start a run-once directory replication task:

ibrix_cfrjob -s -f SRC_FSNAME -o -S SRCDIR -P TGTDIR

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