Re: dm mpath: delay retry activate_path on SCSI_DH_RETRY

[Mike Christie <mchristi@redhat.com>]

On 11/02/2010 02:32 PM, Mike Snitzer wrote:
> On Tue, Jun 09 2009 at  4:54pm -0400,
> Chandra Seetharaman<sekharan@us.ibm.com>  wrote:
>
>> No functional change.
>>
>> Repost with changes made to apply cleanly on top of the patch
>> (http://marc.info/?l=dm-devel&m=124424663327710&w=2) that changed
>> dm-mpath.c
>>
>> -----------------
>> From: Chandra Seetharaman<sekharan@us.ibm.com>
>>
>> SCSI Device Handlers return SCSI_DH_IMM_RETRY if we could retry
>> immediately and SCSI_DH_RETRY in cases where it is better to retry
>> after some delay.
>>
>> Currently we retry immediately irrespective of SCSI_DH_IMM_RETRY and
>> SCSI_DH_RETRY. This patch adds a user configurable attribute
>> pg_init_delay_secs which specifies the number of seconds to delay
>> before retrying scsi_dh_activate, when it returned SCSI_DH_RETRY.
>>
>> Default for this attribute is set to 2 seconds.
>>
>> Signed-off-by: Nikanth Karthikesan<knikanth@suse.de>
>> Signed-off-by: Chandra Seetharaman<sekharan@us.ibm.com>
>
> I'm auditing dm-devel's patchwork and would just like to confirm that
> others would still like to see this go in?
>
> Patch in question is captured here:
> https://patchwork.kernel.org/patch/29088/
>
> Mike C.,
> An earlier version of this patch got your "Looks ok.":
> https://patchwork.kernel.org/patch/23946/
> Can I translate that to your "Acked-by:" if/when I rebase and repost?
>

Yeah.