projects / ipfire-2.x.git / blame
| Commit | Line | Data |
|---|---|---|
| 2cb7cef9 BS |
1 | From: Rajashekhar M A <rajs@netapp.com> |
| 2 | Subject: I/O errors for ALUA state transitions | |
| 3 | References: bnc#491289 | |
| 4 | ||
| 5 | When a SLES11 host is configured with a few LUNs and IO is running, | |
| 6 | injecting FC faults repeatedly leads to path recovery problems. | |
| 7 | The LUNs have 4 paths each and 3 of them come back active after | |
| 8 | say an FC fault which makes two of the paths go down, instead of | |
| 9 | all 4. This happens after several iterations of continuous FC faults. | |
| 10 | ||
| 11 | Reason here is that we're returning an I/O error whenever we're | |
| 12 | encountering sense code 06/04/0a (LOGICAL UNIT NOT ACCESSIBLE, | |
| 13 | ASYMMETRIC ACCESS STATE TRANSITION) instead of retrying. | |
| 14 | ||
| 15 | Signed-off-by: Hannes Reinecke <hare@suse.de> | |
| 16 | ||
| 17 | --- | |
| 18 | drivers/scsi/scsi_error.c | 3 ++- | |
| 19 | 1 file changed, 2 insertions(+), 1 deletion(-) | |
| 20 | ||
| 21 | --- a/drivers/scsi/scsi_error.c | |
| 22 | +++ b/drivers/scsi/scsi_error.c | |
| 23 | @@ -383,7 +383,8 @@ static int scsi_check_sense(struct scsi_ | |
| 24 | * if the device is in the process of becoming ready, we | |
| 25 | * should retry. | |
| 26 | */ | |
| 27 | - if ((sshdr.asc == 0x04) && (sshdr.ascq == 0x01)) | |
| 28 | + if ((sshdr.asc == 0x04) && | |
| 29 | + (sshdr.ascq == 0x01 || sshdr.ascq == 0x0a)) | |
| 30 | return NEEDS_RETRY; | |
| 31 | /* | |
| 32 | * if the device is not started, we need to wake |