[LU-2435] inode accounting in osd-zfs is racy

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.10.0
• Affects Version/s: Lustre 2.4.1
• Labels: RZ_LS llnl quota
• Severity: 3

Epic

server

• Assignee: Jinshan Xiong (Inactive)
• Reporter: Brian Behlendorf

Description

Observed on the MDT during weekend testing with an mixed I/O workload. I agree failure here shouldn't be fatal, however I'm not sure we should even bother telling the administrator. If it's true there's nothing that needs to be (or can be) done, then there's no point is logging this to the console. Changing it to a CDEBUG() would be preferable. If however the administrator needs to do something (which I don't believe is the case) that should be part of the message.

2012-05-04 17:12:17 LustreError: 14242:0:(osd_handler.c:997:osd_object_destroy()) lcz-MDT0000: failed to remove [0x2000023a1:0xf3ed:0x0] from accounting ZAP for grp 36427 (-2)
2012-05-04 17:12:17 LustreError: 14242:0:(osd_handler.c:997:osd_object_destroy()) Skipped 1 previous similar message
2012-05-04 17:16:22 LustreError: 14244:0:(osd_handler.c:991:osd_object_destroy()) lcz-MDT0000: failed to remove [0x20000239a:0x991a:0x0] from accounting ZAP for usr 36427 (-2)
2012-05-04 17:16:30 LustreError: 5618:0:(osd_handler.c:2003:osd_object_create()) lcz-MDT0000: failed to add [0x20000239a:0x9d46:0x0] to accounting ZAP for usr 36427 (-2)
2012-05-04 17:16:34 LustreError: 14241:0:(osd_handler.c:991:osd_object_destroy()) lcz-MDT0000: failed to remove [0x2000013ca:0x1952b:0x0] from accounting ZAP for usr 36427 (-2)
2012-05-04 17:16:53 LustreError: 6778:0:(osd_handler.c:997:osd_object_destroy()) lcz-MDT0000: failed to remove [0x2000013ca:0x19e3f:0x0] from accounting ZAP for grp 36427 (-2)
2012-05-04 17:31:21 LustreError: 6778:0:(osd_handler.c:2003:osd_object_create()) lcz-MDT0000: failed to add [0x200002393:0x1ee18:0x0] to accounting ZAP for usr 36427 (-2)
2012-05-04 17:31:32 LustreError: 6770:0:(osd_handler.c:991:osd_object_destroy()) lcz-MDT0000: failed to remove [0x200002395:0x167e0:0x0] from accounting ZAP for usr 36427 (-2)

Issue Links

• is blocking: LU-7895 zfs metadata performance improvements
• is related to: LU-8326 sanity-quota test_21 test failed to respond and timed out
• is related to: LU-6965 osd_object.c:928:osd_attr_set
• is related to: LU-8927 osp-syn processes contending for osq_lock drives system cpu usage > 80%
• is related to: LU-9192 lfs quota reports wrong file count when using ZFS backend
• is related to: LU-2619 Bogus value of dqb_curinodes returned by osc_quotactl
• is related to: LU-5638 sanity-quota test_33 for ZFS-based backend: Used inodes for user 60000 isn't 0. 1
• is related to: LU-7991 Add project quota for ZFS
• is related to: LU-7991 Add project quota for ZFS