[LU-8922] deactive MDT might cause 2 dir stripes created in the same MDT.

• Type: Bug
• Resolution: Fixed
• Priority: Critical
• Fix Version/s: Lustre 2.10.0
• Affects Version/s: Lustre 2.8.0, Lustre 2.9.0
• Severity: 3
• Assignee: Di Wang
• Reporter: Di Wang

Description

Deactive one MDT might cause 2 stripes created in the same MDT. I will cook a patch.

[root@testnode tests]# ../utils/lfs df
UUID                   1K-blocks        Used   Available Use% Mounted on
lustre-MDT0000_UUID       125368        1936      114072   2% /mnt/lustre[MDT:0]
MDT0001             : inactive device
lustre-MDT0002_UUID       125368        1720      114288   1% /mnt/lustre[MDT:2]
lustre-MDT0003_UUID       125368        1724      114284   1% /mnt/lustre[MDT:3]
lustre-OST0000_UUID       350360       13908      308980   4% /mnt/lustre[OST:0]
lustre-OST0001_UUID       350360       13912      308976   4% /mnt/lustre[OST:1]

filesystem summary:       700720       27820      617956   4% /mnt/lustre

[root@testnode tests]# ../utils/lfs mkdir -i0 -c5 /mnt/lustre/test3
[root@testnode tests]# ../utils/lfs getdirstripe /mnt/lustre/test3
lmv_stripe_count: 4 lmv_stripe_offset: 0
mdtidx		 FID[seq:oid:ver]
     0		 [0x200000400:0x6:0x0]		
     2		 [0x280000402:0x6:0x0]		
     3		 [0x2c0000403:0x6:0x0]		
     0		 [0x200000400:0x7:0x0]		

Issue Links

• is related to: LU-8985 conf-sanity test_50i: FAIL: wrong != 3 for striped_dir