[LU-11634] sanityn/test_77 improvements

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.13.0, Lustre 2.12.3
• Labels: patch
• Severity: 3
• Assignee: Vladimir Saveliev
• Reporter: Vladimir Saveliev

Description

sshd limits number of simultaneous unauthenticated connections via MaxStartups configuration parameter. By default, 10 connections are allowed.
sanityn/test_77* 's actor nrs_write_read() tries to run up to 32 do_nodes() in parallel, causing sshd to drop some of connections.

== sanityn test 77a: check FIFO NRS policy =========================================================== 22:21:58 (1541024518)
ost.OSS.ost.nrs_policies=fifo
...
fre1336: 1+0 records in
fre1336: 1+0 records out
fre1336: 1048576 bytes (1.0 MB) copied, 0.00722902 s, 145 MB/s
fre1335: ssh_exchange_identification: read: Connection reset by peer

pdsh@fre1335: fre1335: ssh exited with exit code 255
...
fre1336: 1048576 bytes (1.0 MB) copied, 0.00595128 s, 176 MB/s
 sanityn test_77a: @@@@@@ FAIL: dd at 11MB on client failed (2) 

Comments

[Gerrit Updater]

Oleg Drokin ([e-mail]) merged in patch https://review.whamcloud.com/35735/
Subject: LU-11634 tests: sanityn/test_77 improvements
Project: fs/lustre-release
Branch: b2_12
Current Patch Set:
Commit: 8843bcb776382c913eb86c5d333dedd6e65bf971

[Gerrit Updater]

James Nunez ([e-mail]) uploaded a new patch: https://review.whamcloud.com/35735
Subject: LU-11634 tests: sanityn/test_77 improvements
Project: fs/lustre-release
Branch: b2_12
Current Patch Set: 1
Commit: b458709561b58c85111c16b71ebcfbbd95296359

[Peter Jones]

Landed for 2.13

[Gerrit Updater]

Oleg Drokin ([e-mail]) merged in patch https://review.whamcloud.com/33607/
Subject: LU-11634 tests: sanityn/test_77 improvements
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: 43ac1425ad9e8c5fc1e7deff579a443b5c9c7a58

[Gerrit Updater]

Vladimir Saveliev ([e-mail]) uploaded a new patch: https://review.whamcloud.com/33607
Subject: LU-11634 tests: sanityn/test_77 improvements
Project: fs/lustre-release
Branch: master
Current Patch Set: 1
Commit: cef776957cf847534f64c32d320307fa849dfa4e