tree d38c5214f10c1a41e809cd20e4e7a008810f1d75
parent 63583cca745f440167bf27877182dc13e19d4bcf
author Hannes Reinecke <hare@suse.de> 1295341992 +0100
committer James Bottomley <James.Bottomley@suse.de> 1297528409 -0600

[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>