From: Hannes Reinecke <hare@suse.de>
Date: Tue, 18 Jan 2011 09:13:12 +0000 (+0100)
Subject: [SCSI] dm mpath: propagate target errors immediately
X-Git-Tag: v2.6.39-rc1~440^2~128
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=751b2a7d623ead9e55f751a6087efeab454b5659;p=pandora-kernel.git

[SCSI] dm mpath: propagate target errors immediately

DM now has more information about the nature of the underlying storage
failure.  Path failure is avoided if a request failed due to a target
error.  Instead the target error is immediately passed up the stack.

Discard requests that fail due to non-target errors may now be retried.

Errors restricted to the path will be retried or returned if no
paths are available, irregarding the no_path_retry setting.

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Acked-by: Alasdair G Kergon <agk@redhat.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
---

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