[SCSI] dm mpath: propagate target errors immediately

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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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Hannes Reinecke 2011-01-18 10:13:12 +01:00 • committed by James Bottomley

parent 63583cca74

commit 751b2a7d62

1 changed files with 10 additions and 12 deletions

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drivers/md/dm-mpath.c

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