HP StoreAll Storage - Manual (Page 47)

ibrix_fs -c failed with "Bad magic number in super-block"
If a file system creation command fails with an error such as the following, the command may have
failed to preformat the LUN.
# ibrix_fs -c -f fs1 -s seg1_4
Calculated owner for seg1_4 : glory22
failed command (/usr/local/ibrix/bin/tuneibfs -F
3e2a9657-fc8b-46b2-96b0-1dc27e8002f3 -H glory2 -G 1 -N 1 -S fs1 -R 1
/dev/vg1_4/seg1_4 2>&1) status (1) output: (/usr/local/ibrix/bin/tuneibfs: Bad
magic number in super-block while trying to open /dev/vg1_4/seg1_4 Couldn't
find valid filesystem superblock. /usr/local/ibrix/bin/tuneibfs 5.3.461 Rpc
Version:5 Rpc Ports base=IBRIX_PORTS_BASE (Using EXT2FS Library version 1.32.1)
[ipfs1_open] reading superblock from blk 1 )
Iad error on host glory2
To work around the problem, recreate the segment on the failing LUN. To identify the LUN associated
with the failure, run a command such as the following on the first server in the system:
# ibrix_pv -l -h glory2
PV_NAME SIZE(MB) VG_NAME DEVICE RAIDTYPE RAIDHOST RAIDDEVICE
------- -------- ------- --------------- -------- -------- ----------
d1 131070 vg1_1 /dev/mxso/dev4a
d2 131070 vg1_2 /dev/mxso/dev5a
d3 131070 vg1_3 /dev/mxso/dev6a
d5 23551 vg1_5 /dev/mxso/dev8a
d6 131070 vg1_4 /dev/mxso/dev7a
The Device column identifies the LUN number. In this example, the volume group vg1_4 is created
from LUN 7. Recreate the segment and then run the file system creation command again.
Troubleshooting file systems 47