[LU-10048] osd-ldiskfs to truncate outside of main transaction

• Type: Bug
• Resolution: Fixed
• Priority: Major
• Fix Version/s: Lustre 2.13.0
• Affects Version/s: Lustre 2.12.0, Lustre 2.10.4, Lustre 2.10.5
• Assignee: Alex Zhuravlev
• Reporter: Alex Zhuravlev

Description

this is needed to implement (transaction first; locking next) order to unify locking among MDT/OST/OUT

Issue Links

• is blocked by: LU-11764 osd_declare_qid() should not rely on constant id
• is duplicated by: LU-11613 MDS and OSS locked up wait_transaction_locked+0x85/0xd0 [jbd2]
• is duplicated by: LU-8786 Terrible i/o performance of a test application doing repeatable writes and truncates
• is related to: LU-11685 removing file names and freeing inodes are not atomic on the OST
• is related to: LU-11465 OSS/MDS deadlock in 2.10.5
• is related to: LU-5994 DT transaction start and object lock ordering
• is related to: LU-13234 ldiskfs/namei.c:3310 ldiskfs_orphan_add+0x11e/0x2a0 [ldiskfs]
• is related to: LU-12977 fix i_mutex for ldiskfs_truncate() in osd_execute_truncate()
• is related to: LU-5152 Can't enforce block quota when unprivileged user change group
• is related to: LU-8806 LFSCK hangs on MDT - osp_precreate_cleanup_orphans - cannot cleanup orphans: rc = -107