From: Hannes Reinecke <hare@suse.de>
To: linux-scsi@vger.kernel.org
Cc: Hannes Reinecke <hare@suse.de>,
James Bottomley <jbottomley@parallels.com>
Subject: [PATCH] scsi: return TARGET_ERROR when a device has been disconnected
Date: Thu, 16 Aug 2012 08:40:08 +0200 [thread overview]
Message-ID: <1345099208-31687-1-git-send-email-hare@suse.de> (raw)
When we receive a sense code of
NOT READY, LOGICAL UNIT NOT SUPPORTED
the device has been disconnected and any retry on other paths
would be pointless. So return TARGET_ERROR here.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Cc: James Bottomley <jbottomley@parallels.com>
---
drivers/scsi/scsi_error.c | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c
index de2337f..0fe639e 100644
--- a/drivers/scsi/scsi_error.c
+++ b/drivers/scsi/scsi_error.c
@@ -296,6 +296,10 @@ static int scsi_check_sense(struct scsi_cmnd *scmd)
return NEEDS_RETRY;
case NOT_READY:
+ if ((sshdr.asc == 0x25) && (sshdr.ascq == 0)) {
+ /* Logical unit not supported */
+ return TARGET_ERROR;
+ }
case UNIT_ATTENTION:
/*
* if we are expecting a cc/ua because of a bus reset that we
--
1.7.4.2
next reply other threads:[~2012-08-16 6:40 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-16 6:40 Hannes Reinecke [this message]
2012-08-16 14:53 ` [PATCH] scsi: return TARGET_ERROR when a device has been disconnected Michael Christie
2012-08-16 14:59 ` Hannes Reinecke
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