Errno 17 = EEXIST means that a service or obd has already been started. I would stop everything that's running, verify that everything under /proc/fs/lustre/devices is gone,
and then try to restart the MDT.
If there's still an issue, post the lctl debug log (lctl dk /tmp/log)


Jeremy Mann wrote:
I had to reset the MGS/MDT server this morning and now it will not mount
the meta partition:

Lustre:   0 UP mgs MGS MGS 5
Lustre:   1 UP mgc [EMAIL PROTECTED] df0ad628-5c2f-15b8-af52-71916345abc0 6
Lustre:   2 UP mdt MDS MDS_uuid 3
Lustre:   3 UP lov bcffs-mdtlov bcffs-mdtlov_UUID 3
LustreError: 7372:0:(obd_mount.c:1074:server_start_targets()) failed to
start server bcffs-MDT0000: -17
LustreError: 7372:0:(obd_mount.c:1514:server_fill_super()) Unable to start
targets: -17
LustreError: 7372:0:(obd_mount.c:1342:server_put_super()) no obd
bcffs-MDT0000
Lustre: MGS has stopped.
Lustre: server umount bcffs-MDT0000 complete

[EMAIL PROTECTED] ~]$ sudo mount -t lustre /dev/sda2 /lustre-meta/
mount.lustre: mount /dev/sda2 at /lustre-meta failed: File exists

Thanks for any help.


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