[LU-14957] mdd_migrate() sends RPC with a local transaction running Created: 21/Aug/21  Updated: 20/Jan/22  Resolved: 30/Nov/21

Status: Resolved
Project: Lustre
Component/s: None
Affects Version/s: Upstream
Fix Version/s: Lustre 2.15.0

Type: Bug Priority: Minor
Reporter: Alex Zhuravlev Assignee: Lai Siyao
Resolution: Fixed Votes: 0
Labels: None

Severity: 3
Rank (Obsolete): 9223372036854775807

 Description   

if a remote host is down for a while, then local MDS may get stuck as well

Call Trace:
 dump_stack+0x85/0xc0
 ptlrpc_queue_wait+0x27e/0x290 [ptlrpc]
 osp_remote_sync+0x122/0x1a0 [osp]
 osp_md_xattr_list+0x4d4/0x7f0 [osp]
 mdd_iterate_xattrs+0xac/0xa30 [mdd]
 ? mdo_declare_xattr_set+0x330/0x330 [mdd]
 ? down_write_nested+0x73/0xb0
 mdd_migrate_object+0x18c1/0x2b80 [mdd]
 mdd_migrate+0x385/0x1740 [mdd]
 ? mdt_object_lock_internal+0x1d3/0x3f0 [mdt]
 mdt_reint_migrate+0x1bf6/0x3260 [mdt]
 ? lustre_msg_add_version+0x1c/0x90 [ptlrpc]
 mdt_reint_rec+0x117/0x240 [mdt]
 mdt_reint_internal+0x9e1/0xbd0 [mdt]
 mdt_reint+0x57/0x100 [mdt]
 tgt_request_handle+0xbe0/0x1970 [ptlrpc]


 Comments   
Comment by Gerrit Updater [ 24/Aug/21 ]

"Lai Siyao <lai.siyao@whamcloud.com>" uploaded a new patch: https://review.whamcloud.com/44741
Subject: LU-14957 mdd: prepare xattrs before migration
Project: fs/lustre-release
Branch: master
Current Patch Set: 1
Commit: ea433887904020c9997879c52a0803f2c31afc1b

Comment by Gerrit Updater [ 30/Nov/21 ]

"Oleg Drokin <green@whamcloud.com>" merged in patch https://review.whamcloud.com/44741/
Subject: LU-14957 mdd: prepare xattrs before migration
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: dc1aa272d24cff9f06fd9ea71e4ad468c16acc52

Comment by Peter Jones [ 30/Nov/21 ]

Landed for 2.15

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