[Linux-cluster] Device missing

[Vincent Aniello]

One of my GFS file system is no longer mountable because the device
associated with it has disappeared from my system.  The file system is
named /gfs02 and the device it points to is /dev/pool/pool_gfs02.

[root at dvblkc01a gfs]# mount /gfs02
mount: special device /dev/pool/pool_gfs02 does not exist
[root at dvblkc01a gfs]#

The device /dev/pool/pool_gfs02 is missing from my /dev/pool directory.
It used to be there.

[root at dvblkc01a gfs]# ls -l /dev/pool
total 0
brw-------    2 root     root     254,  65 Nov 29 18:22 dvcluster_cca
brw-------    2 root     root     254,  66 Nov 29 18:22 pool_gfs01
brw-------    2 root     root     254,  67 Nov 29 18:22 pool_gfs03
[root at dvblkc01a gfs]#

The device /dev/sdc2 is associated with /dev/pool/pool_gfs02:

poolname pool_gfs02
subpools 1
subpool 0 0 1
pooldevice 0 0 /dev/sdc2

The device /dev/sdc2 seems to be available to the system:

Disk /dev/sdc: 71.7 GB, 71728889856 bytes
255 heads, 63 sectors/track, 8720 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot    Start       End    Blocks   Id  System
/dev/sdc1             1         2     16033+  83  Linux
/dev/sdc2             3      8720  70027335   83  Linux


So, how do I get this device and file system back so I can mount it and
what would make it dissapear in the first place?

--Vincent



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