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Re: [dm-devel] dm mpath: delay retry activate_path on SCSI_DH_RETRY



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.


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