[LU-4479] Credit error with unlink for large number OSTs

• Type: Bug
• Resolution: Duplicate
• Priority: Critical
• Affects Version/s: Lustre 2.6.0
• Environment: OSTCOUNT=40 sh sanity.sh
• Severity: 3
• Assignee: Niu Yawei (Inactive)
• Reporter: Alexey Lyashkov

Description

Lustre: lustre-OST0027: deleting orphan objects from 0x0:216 to 0x0:257
Lustre: 23291:0:(osd_handler.c:897:osd_trans_start()) lustre-MDT0000: too many transaction credits (7166 > 1024)
Lustre: 23291:0:(osd_handler.c:904:osd_trans_start()) create: 40/1000, delete: 2/35, destroy: 1/25
Lustre: 23291:0:(osd_handler.c:909:osd_trans_start()) attr_set: 2/2, xattr_set: 41/574
Lustre: 23291:0:(osd_handler.c:916:osd_trans_start()) write: 322/4508, punch: 80/320, quota 2/2
Lustre: 23291:0:(osd_handler.c:921:osd_trans_start()) insert: 41/696, delete: 1/25
Lustre: 23291:0:(osd_handler.c:926:osd_trans_start()) ref_add: 1/1, ref_del: 3/3
Pid: 23291, comm: mdt00_004

Call Trace:
[<ffffffffa03ea8c5>] libcfs_debug_dumpstack+0x55/0x80 [libcfs]
[<ffffffffa0c1f393>] osd_trans_start+0x653/0x670 [osd_ldiskfs]
[<ffffffffa0e26529>] lod_trans_start+0x1b9/0x250 [lod]
[<ffffffffa0d1b187>] mdd_trans_start+0x17/0x20 [mdd]
[<ffffffffa0d0ff6f>] mdd_unlink+0x42f/0xd20 [mdd]
[<ffffffffa0d77d91>] ? mdt_reint_unlink+0x871/0x10f0 [mdt]
[<ffffffffa0d74738>] mdo_unlink+0x18/0x50 [mdt]
[<ffffffffa0d77dc8>] mdt_reint_unlink+0x8a8/0x10f0 [mdt]
[<ffffffffa0d74431>] mdt_reint_rec+0x41/0xe0 [mdt]
[<ffffffffa0d5ad53>] mdt_reint_internal+0x4c3/0x780 [mdt]
[<ffffffffa0d5b59b>] mdt_reint+0x6b/0x120 [mdt]
[<ffffffffa081b995>] tgt_request_handle+0x245/0xad0 [ptlrpc]
[<ffffffffa07cc261>] ptlrpc_main+0xce1/0x1960 [ptlrpc]
[<ffffffffa07cb580>] ? ptlrpc_main+0x0/0x1960 [ptlrpc]
[<ffffffff810996b6>] kthread+0x96/0xa0
[<ffffffff8100c1ca>] child_rip+0xa/0x20
[<ffffffff81534750>] ? _spin_unlock_irq+0x30/0x40
[<ffffffff8100bb10>] ? restore_args+0x0/0x30
[<ffffffff81099620>] ? kthread+0x0/0xa0
[<ffffffff8100c1c0>] ? child_rip+0x0/0x20s

Issue Links

• duplicates: LU-4611 too many transaction credits (32279 > 25600)