Re: [PATCH] scsi: core: Do not retry I/Os during depopulation

From: Bart Van Assche
Date: Thu Jan 30 2025 - 17:37:02 EST


On 1/30/25 2:26 PM, Igor Pylypiv wrote:
Fail I/Os instead of retry to prevent user space processes from being
blocked on the I/O completion for several minutes.

Retrying I/Os during "depopulation in progress" or "depopulation restore
in progress" results in a continuous retry loop until the depopulation
completes or until the I/O retry loop is aborted due to a timeout by
the scsi_cmd_runtime_exceeced().

Depopulation is slow and can take 24+ hours to complete on 20+ TB HDDs.
Most I/Os in the depopulation retry loop end up taking several minutes
before returning the failure to user space.

Since this patch is a bug fix, please add Fixes: and Cc: stable tags.

Thanks,

Bart.