[LU-4379] Unable to set max_pages_per_rpc at client mount time

• Type: Bug
• Resolution: Fixed
• Priority: Major
• Fix Version/s: Lustre 2.6.0, Lustre 2.5.1
• Affects Version/s: Lustre 2.4.1
• Labels: mn4 patch
• Severity: 3
• Assignee: Emoly Liu
• Reporter: Sebastien Buisson (Inactive)

Description

Hi,

It is very convenient to be able to set all Lustre client tuning parameters (max_pages_per_rpc, max_rpcs_in_flight, ...) right after having Lustre mounted.
Unfortunately, with Lustre 2.4 we are unable to set max_pages_per_rpc tunable for osc associated to an unavailable target. This is annoying as we do not necessarily know when the targets will become available.

I will propose a patch to address this issue.

Thanks,
Sebastien.