From: Mike Snitzer <snitzer@redhat.com>
Date: Mon, 13 Feb 2012 23:35:11 +0000 (-0500)
Subject: [SCSI] scsi_error: classify some ILLEGAL_REQUEST sense as a permanent TARGET_ERROR
X-Git-Tag: v3.4-rc1~145^2~75
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=47ac56db133cb0b6cf3c8b156db854c158fb9dae;p=pandora-kernel.git

[SCSI] scsi_error: classify some ILLEGAL_REQUEST sense as a permanent TARGET_ERROR

Permanent target failures are non-retryable and should be classified as
TARGET_ERROR; otherwise dm-multipath will retry an IO request that will
always fail at the target.

A SCSI command that fails with ILLEGAL_REQUEST sense and Additional
sense 0x20, 0x21, 0x24 or 0x26 represents a permanent TARGET_ERROR.

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
---

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