HP StorageWorks Scalable File Share - Manual (Page 246)

Troubleshooting 9–22
3. Shut down the Object Storage Servers that served the file system by entering the following commands
on the administration server:
# sfsmgr
.
.
.
sfs> shutdown servers server_names
4. From the administration server, reboot the MDS server by entering the command shown in the
following example, where
south2
is the MDS server:
# ssh south2 shutdown -r now
5. When the Object Storage Servers have shut down and the MDS server has rebooted, reboot the
administration server by entering the following command on the administration server:
# shutdown -r now
6. When the administration server has rebooted, log in to the administration server and boot the Object
Storage Servers by entering the following command:
# sfsmgr
.
.
.
sfs> boot servers server_names
All of the information on the original file system is now deleted, and you can create a new file system as
necessary.
9.26.2 Identifying servers serving OST services
To determine which servers are serving OST services, enter the following command:
sfs> show ost
OST Served by Filesystem
---- --------- ----------
ost0 south3 data
ost1 south3 data
ost2 south4 data
ost3 south4 data
To verify that the services are loaded, log in to each server shown in the output from the
show ost
command, and enter the command shown in the following example, where the command is entered on the
south3
server:
# ls -al /proc/fs/lustre/obdfilter
total 0
dr-xr-xr-x 6 root root 0 May 13 09:41 .
dr-xr-xr-x 6 root root 0 May 13 09:41 ..
dr-xr-xr-x 2 root root 0 May 13 09:42 ost0
dr-xr-xr-x 2 root root 0 May 13 09:42 ost1
-r--r--r-- 1 root root 0 May 13 09:42 num_refs
9.26.3 The start filesystem command may fail twice
If the
start filesystem
command fails for any reason, and the command is entered again after fixing
the problem that caused it to fail, the command may fail again. If this happens, enter the
stop
filesystem
command and then enter the
start filesystem
command again.