[LU-4783] start params llog automatically during mgs setup

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.6.0, Lustre 2.5.2
• Affects Version/s: Lustre 2.5.0, Lustre 2.6.0
• Severity: 3
• Assignee: Emoly Liu
• Reporter: Emoly Liu

Description

Params llog was introduced by LU-3155 to use "lctl set_param -P" to set parameters permanently instead of "lctl conf_param". But during investigation on LU-3410 I find that when a new filesystem is mounted, params llog won't be created automatically until "set_param -P" is called. So before running "set_param -P", there is no params llog in mgs and the other servers can't make a local copy successfully.
This causes the console error message "LustreError: 13a-8: Failed to get MGS log params and no local copy."is printed.

I will push a patch later.

Issue Links

• is related to: LU-3410 mgc_copy_llog()) Failed to copy remote log routed1-OST00b3 (-2) ecountered during bring up of a 2.4 file system

Comments

[Jian Yu]

Here is the back-ported patch for Lustre b2_5 branch: http://review.whamcloud.com/10310

[Peter Jones]

Landed for 2.6

[Emoly Liu]

The patch is at http://review.whamcloud.com/9737