[LU-15062] sanity test_413c: FAIL: subdirs shouldn't be evenly distributed: 204 - 196 < 20

• Type: Bug
• Resolution: Unresolved
• Priority: Minor
• Affects Version/s: Lustre 2.15.0
• Severity: 3
• Assignee: WC Triage
• Reporter: Elena Gryaznova

Description

== sanity test 413c: mkdir with default LMV max inherit rr ========================================================== 10:50:12 (1631962212)
dirstripe: 'lmv_stripe_count: 0 lmv_stripe_offset: 0 lmv_hash_type: none'
getfattr: Removing leading '/' from absolute path names
trusted.dmv=0xd00cd30c01000000ffffffff000000000000000000000000000000000000000000000000000000000000000000000000
defstripe: 'lmv_stripe_count: 1 lmv_stripe_offset: -1 lmv_hash_type: none lmv_max_inherit: -1 lmv_max_inherit_rr: 0'

Mkdir (stripe_count 1) on stripe 0
200 directories created on MDT0
0 directories created on MDT1

Check for uneven MDTs: 
MDT filesfree available: 199449 199714
MDT blocks available: 239532 240572
weight diff=0%

Mkdir (stripe_count 1) with balanced space usage:
196 directories created on MDT0
204 directories created on MDT1
 sanity test_413c: @@@@@@ FAIL: subdirs shouldn't be evenly distributed: 204 - 196 < 20 

reproduction rate : 2(10)

Issue Links

• is related to: LU-17601 sanity: 413a Failed with 'subdirs shouldn't be evenly distributed: 21 - 19 <= 2'
• is related to: LU-16752 sanity test_413a FAIL: stripes shouldn't be evenly distributed

Comments

[Andreas Dilger]

+1 in April:
https://testing.whamcloud.com/sub_tests/b4fb220a-a8f3-4ec9-acba-83cf01f6b2c6

+1 in March:
https://testing.whamcloud.com/sub_tests/11a7b5cf-98bb-40cd-9dd1-400b228eecaf

so looking pretty reliable after patch https://review.whamcloud.com/54168 "LU-16752 test: improve sanity 413a/b reliability" was landed. Despite the patch description, the same core code is also used in test_413c.