[Lustre-discuss] OST mount fails because of obdfilter state
Erich Focht
efocht at hpce.nec.com
Fri Jan 30 03:29:19 PST 2009
Hello,
we see the following issue on Lustre 1.6.5.1:
Sometimes an OST mount fails with the error message
LustreError: 18644:0:(genops.c:246:class_newdev()) Device lustre-OST0003
already exists, won't add
LustreError: 18644:0:(obd_config.c:180:class_attach()) Cannot create
device lustre-OST0003 of type obdfilter : -17
Turns out that the device list shows that the obdfilter is somehow in
the system already, but in strange state:
[root at doss2 ~]# lctl dl
0 UP mgc MGC10.3.0.230 at o2ib 1805aeda-6b3a-c265-7f68-299401681273 5
1 UP ost OSS OSS_uuid 3
2 UP obdfilter lustre-OST0002 lustre-OST0002_UUID 7
3 UP obdfilter lustre-OST0000 lustre-OST0000_UUID 7
4 UP obdfilter lustre-OST0001 lustre-OST0001_UUID 7
5 -- obdfilter lustre-OST0003 lustre-OST0003_UUID 5 <---
6 UP obdfilter lustre-OST0005 lustre-OST0005_UUID 7
7 UP obdfilter lustre-OST0004 lustre-OST0004_UUID 7
Is there any way (expect reboot or unloading lustre modules) to reset or
unload this obdfilter?
Regards,
Erich
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