1 .TH LCTL-POOL_ADD 8 "2018-12-12" Lustre "configuration utilities"
3 lctl-pool_add \- add OSTs to a named pool
5 .B lctl pool_add \fI<fsname>.<poolname>\fR \fI<ost_index> ...\fR
7 .B lctl pool_add \fI<fsname>.<poolname>\fR \fI<ost_range> ...\fR
10 Add one or more OSTs to the pool named
12 in the filesystem named
14 There are several formats that the OSTs can be specified. Simplest is
15 to just specify a list of
17 numbers or OST names. It is also possible to specify an
19 expression of the form
22 .BI [ start - end / step ]
23 that adds multiple OSTs with index numbers in the range from
27 (inclusive), optionally skipping every
31 command must be run on the MGS node and can only be used by the
32 root user. If the MGS is on a separate node from the MDS, a
33 Lustre client must be mounted while the
35 commands are being run.
37 The OST pool can be used by
39 to specify the OSTs on which new files can be created, and
41 to locate files that were initially created on the specified
43 Note however, that the OSTs that make up a specific pool may change
44 over time, and it is the
46 used at creation time that is stored on each file, not necessarily
47 OSTs that are in the current pool. As well,
49 can show only the free space or inodes in a named pool.
53 .B # lfs pool_new testfs.local
60 .B # lfs pool_add testfs.local 12 13 14
61 Add OSTs numbered 12, 13, and 14 to the
67 .BR lctl-pool_new (8),
70 .BR lfs-setstripe (1),