[LU-14111] Report per-target eviction count

• Type: Improvement
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.16.0
• Assignee: Aurelien Degremont (Inactive)
• Reporter: Aurelien Degremont (Inactive)

Description

Eviction is a standard mechanism for Lustre targets to protect themselves against dead or misbehaving clients.

On a live filesystem, evictions happen, eventually and it could be useful for sysadmin to have an exact counter to monitor them and take action if needed.

I will propose a patch where an eviction counter is added to obd_device, increased when an eviction occurs and exposed through lctl get_param.

Issue Links

• is related to: LU-17728 Create a Lustre stat to indicate when there was a client eviction