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Do not sent 120 TEST UNIT READY requests on generic NOT READY statuses.

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Some failing disks tend to return vendor-specific ASC/ASCQ codes with
NOT READY sense key.  It caused extremely long recovery attempts, repeating
these 120 TURs (it takes at least 1 minute) for every I/O request.
Instead of that use default error handling, doing just few retries.

Reviewed by:	ken, gibbs
MFC after:	1 month
This commit is contained in:
mav 2013-04-11 06:34:41 +00:00
parent ea145a8678
commit 4a4cddb38e
1 changed files with 2 additions and 5 deletions
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7
sys/cam/scsi/scsi_all.c
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@ -699,10 +699,7 @@ const struct sense_key_table_entry sense_key_table[] =
{
{ SSD_KEY_NO_SENSE, SS_NOP, "NO SENSE" },
{ SSD_KEY_RECOVERED_ERROR, SS_NOP|SSQ_PRINT_SENSE, "RECOVERED ERROR" },
{
SSD_KEY_NOT_READY, SS_TUR|SSQ_MANY|SSQ_DECREMENT_COUNT|EBUSY,
"NOT READY"
},
{ SSD_KEY_NOT_READY, SS_RDEF, "NOT READY" },
{ SSD_KEY_MEDIUM_ERROR, SS_RDEF, "MEDIUM ERROR" },
{ SSD_KEY_HARDWARE_ERROR, SS_RDEF, "HARDWARE FAILURE" },
{ SSD_KEY_ILLEGAL_REQUEST, SS_FATAL|EINVAL, "ILLEGAL REQUEST" },
@ -877,7 +874,7 @@ static struct asc_table_entry asc_table[] = {
{ SST(0x03, 0x02, SS_RDEF,
"Excessive write errors") },
/* DTLPWROMAEBKVF */
{ SST(0x04, 0x00, SS_TUR | SSQ_MANY | SSQ_DECREMENT_COUNT | EIO,
{ SST(0x04, 0x00, SS_RDEF,
"Logical unit not ready, cause not reportable") },
/* DTLPWROMAEBKVF */
{ SST(0x04, 0x01, SS_TUR | SSQ_MANY | SSQ_DECREMENT_COUNT | EBUSY,