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| author | Mike Snitzer <snitzer@redhat.com> | 2012-02-13 18:35:11 -0500 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2012-02-19 09:39:59 -0600 |
| commit | 47ac56db133cb0b6cf3c8b156db854c158fb9dae (patch) | |
| tree | f7b203048444d6aad66c24d9285388058e34cc67 /drivers/scsi/scsi_error.c | |
| parent | 89730393f260aef7fce9f6fd475da148517a4c5c (diff) | |
| download | linux-47ac56db133cb0b6cf3c8b156db854c158fb9dae.tar.gz linux-47ac56db133cb0b6cf3c8b156db854c158fb9dae.tar.bz2 linux-47ac56db133cb0b6cf3c8b156db854c158fb9dae.zip | |
[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>
Diffstat (limited to 'drivers/scsi/scsi_error.c')
| -rw-r--r-- | drivers/scsi/scsi_error.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c index 6ae3b5dbd379..f66e90db3bee 100644 --- a/drivers/scsi/scsi_error.c +++ b/drivers/scsi/scsi_error.c @@ -366,6 +366,14 @@ static int scsi_check_sense(struct scsi_cmnd *scmd) return TARGET_ERROR; case ILLEGAL_REQUEST: + if (sshdr.asc == 0x20 || /* Invalid command operation code */ + sshdr.asc == 0x21 || /* Logical block address out of range */ + sshdr.asc == 0x24 || /* Invalid field in cdb */ + sshdr.asc == 0x26) { /* Parameter value invalid */ + return TARGET_ERROR; + } + return SUCCESS; + default: return SUCCESS; } |