[LU-9611] fix default stripe count/offset proc tunables

• Type: Bug
• Resolution: Fixed
• Priority: Major
• Fix Version/s: Lustre 2.11.0, Lustre 2.10.3
• Affects Version/s: Lustre 2.9.0, Lustre 2.10.0
• Severity: 3
• Assignee: Andreas Dilger
• Reporter: Andreas Dilger

Description

Since patch http://review.whamcloud.com/16930 "LU-7334 lprocfs: Refactored string to value helpers" was landed, it incorrectly checks that lod.*.stripecount and lod.*.stripeoffset are not negative, but in fact they can both be "-1" to indicate that the filesystem-wide default value should be used. These parameters are also set internally if using lfs setstripe -c -1 $MOUNT or lfs setstripe -i -1 $MOUNT to set the system wide default, generating a console error on the MDS:

LustreError: 12558:0:(obd_config.c:1392:class_process_proc_param())  lov.: error writing proc entry 'stripecount': rc = -34
LustreError: 12558:0:(obd_config.c:1392:class_process_proc_param())  lov.: error writing proc entry 'stripeoffset': rc = -34

Issue Links

• is related to: LU-7334 Refactor lprocfs helpers