volume.reiser4 Software Framework Release Number (SFRN) 5.1.3
volume.reiser4 (supersedes previous man page)
volume.reiser4 - the program for managing reiser4 logical volumes.
volume.reiser4 [ options ] [ FILE ] [ MNT ]
volume.reiser4 is an utility to manage reiser4 logical (compound) volumes. It performs operations on logical volumes like adding[removing] a brick to[from] your volume, changing capacity of any brick of your volume, increasing current
upper limit on total number of bricks in your volume. On-line options are applicable only to mounted volumes. Other options don’t have such restrictions. This program doesn’t create initial volume. Instead, it operates on bricks, which are formatted partitions. To create a brick use mkfs.reiser4(8) utility. For more details see logical volumes administration guide at Logical Volumes Administration
Prints program version.
-?, -h, --help
Prints program help.
Assumes an answer ’yes’ to all questions.
-g, --register DEV
Register a brick associated with device DEV in the system.
-u, --unregister DEV
Unregister a brick associated with device DEV in the system.
Print list of all bricks registered in the system.
-p, --print N
Print information about a brick of serial number N in the volume mounted at MNT.
Run a balancing procedure on a volume mounted at MNT.
-z, --resize DEV
Change data capacity of a brick associated with device DEV in the volume mounted at MNT. The actual capacity has to be defined by the option "-c (--capacity)".
-c, --capacity VALUE
Define new data capacity VALUE for a device specified by option "-z (--resize)".
-a, --add DEV
Add a brick associated with device DEV to the volume mounted at MNT. This operation makes the volume unbalanced. Using in conjunction with -B (--with-balance) option, completes the operation with balancing.
Add a proxy brick associated with device DEV to the volume mounted at MNT.
Remove a brick associated with device DEV from the volume mounted at MNT. Automatically triggers balancing, which is considered as a part of the removal operation. Being interrupted for some reasons, should be completed by running the utility with the option -R (--finish-removal).
-q, --scale N
Increase 2^N times the upper limit for total number of bricks in the volume mounted at MNT. This operation makes the volume unbalanced. Using in conjunction with -B (--with-balance) option, completes the operation with balancing.
-m, --migrate N
Move all data blocks of regular FILE to a brick of serial number N.
Set "immobile" property to regular FILE.
Clear "immobile" property of regular FILE.
Complete a volume operation with balancing procedure. Can be used only in conjunction with
options -a (--add), -z (--resize), -q (--scale).
Finish brick removal operation interrupted for various reasons.
Restore regular distribution on the volume mounted at MNT.
To create a volume, choose volume ID and stripe size. Then create a first brick, that will be the meta-data brick of your volume:
mkfs.reiser4 -U $VOL_ID -t $STRIPE /dev/sdb1
To add a data brick to your initial volume, consisting of only one meta-data brick, mount it e.g. at /mnt:
mount /dev/sdb1 /mnt
Choose a block device for your data brick (e.g. /dev/sdb2) and format it with the same volume ID and stripe size:
mkfs.reiser4 -a -U $VOL_ID -t $STRIPE /dev/sdb2
Finally, using option "-a", add it to the volume:
volume.reiser4 -a /dev/sdb2 /mnt
After this, you might want to run balancing procedure on your volume. It will distribute all your data among the bricks fairly, i.e. in a proportion with bricks capacities. For this simply run the utility with the option -b (--balance):
volume.reiser4 -b /mnt
To remove a brick from your logical volume simply specify the block device that the brick is associated with,
using option "-r":
volume.reiser4 -r /dev/sdb2 /mnt
After successful removal completion your volume is always balanced. If the operation of brick removal was interrupted for some reasons, then complete the removal by running the utility with the option -R (--finish-removal):
volume.reiser4 -R /mnt
Report bugs to <email@example.com>
Reiser4 logical volumes administration guide at Logical Volumes Administration
Written by Edward O. Shishkin
Unstable software is available for no-cost download AS-IS with no explicit nor implied warranties.
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