On 04/10/2011 07:52 PM, Mark Goodwin wrote:
--- a/drivers/scsi/scsi.c
+++ b/drivers/scsi/scsi.c
@@ -554,7 +554,10 @@ int scsi_dispatch_cmd(struct scsi_cmnd *cmd)
cmd->result = (DID_NO_CONNECT << 16);
scsi_done(cmd);
} else {
- rtn = host->hostt->queuecommand(cmd, scsi_done);
+ if (cmd->device->sdev_state == SDEV_ZOMBIE)
+ rtn = 0; /* will timeout so err handler will run */
+ else
+ rtn = host->hostt->queuecommand(cmd, scsi_done);
}
Would we want to consider adding this to the patch set too? It will allow
affected sites to more easily tune their timeouts and redundancy config
(i.e. echo zombie > /sys/block/sdX/device/state to simulate a failure).
You have someting like that already in the block layer with the
io-timeout-fail sysfs setting.
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