[LU-12031] DoM/HSM: hsm_release fails after hsm_restore

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.16.0
• Affects Version/s: Lustre 2.12.0
• Labels: CEA DoM HSM
• Severity: 3
• Assignee: Mikhail Pershin
• Reporter: CEA

Description

 There is an issue when releasing a file striped with DoM after an hsm_restore.

To reproduce:

1) create a file with a 1st component on MDT:

lfs setstripe -E 1M -L mdt -E -1 -S 4M -c -1 /mnt/lustre/domfile

2) archive and release the file (requires HSM set up)
 

lfs hsm_archive /mnt/lustre/domfile
# (wait for archive to complete)
lfs hsm_release

3) restore the file

lfs hsm_restore /mnt/lustre/domfile
# or cat /mnt/lustre/domfile

4) release the file => FAILS 

lfs hsm_release /mnt/lustre/domfile

Cannot send HSM request (use of /mnt/lustre/domfile): Device or resource busy

 
It may be something wrong with the data version stored in hsm EA.

Issue Links

• is related to: LU-13515 prohibit DOM layout for VOLATILE file