[LU-14399] mount MDT takes very long with hsm enable

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.15.0
• Environment: https://testing.whamcloud.com/test_sets/20fcc789-47a3-44a2-a17e-d6f39fbb3ec0
• Severity: 3
• Assignee: Sergey Cheremencev
• Reporter: Minh Diep

Description

We observed that when mounting MDT with HSM enable, mount command take minutes compare to seconds as before. We saw this in the log

[53618.238941] Lustre: DEBUG MARKER: mkdir -p /mnt/lustre-mds2; mount -t lustre -o localrecov  /dev/mapper/mds2_flakey /mnt/lustre-mds2
[53618.624098] LDISKFS-fs (dm-6): mounted filesystem with ordered data mode. Opts: user_xattr,errors=remount-ro,no_mbcache,nodelalloc
[53720.390690] Lustre: 1722736:0:(mdt_coordinator.c:1114:mdt_hsm_cdt_start()) lustre-MDT0001: trying to init HSM before MDD
[53720.392834] LustreError: 1722736:0:(mdt_coordinator.c:1125:mdt_hsm_cdt_start()) lustre-MDT0001: cannot take the layout locks needed for registered restore: -2
[53720.398049] LustreError: 1722741:0:(mdt_coordinator.c:1090:mdt_hsm_cdt_start()) lustre-MDT0001: Coordinator already started or stopping
[53720.400681] Lustre: lustre-MDT0001: Imperative Recovery not enabled, recovery window 60-180
[53720.424872] Lustre: lustre-MDT0001: in recovery but waiting for the first client to connect
[53720.953893] Lustre: DEBUG MARKER: /usr/sbin/lctl get_param -n health_check
[53722.067555] Lustre: DEBUG MARKER:  

Seems related to LU-13920

Issue Links

• is related to: LU-13920 HSM: hsm_actions are not processed after MDS failover