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| author | Mike Christie <michaelc@cs.wisc.edu> | 2010-04-25 07:03:57 -0500 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@suse.de> | 2010-07-27 12:03:51 -0500 |
| commit | 6e49949c5e9e04d64e16df3723dd3f5bd25a29e2 (patch) | |
| tree | 730c4910ae19a1108b074264f487da967f7dd8cd /drivers/scsi | |
| parent | 3e84beba608dee5a7c7711a3503eb2f335c78fca (diff) | |
| download | kernel_samsung_smdk4412-6e49949c5e9e04d64e16df3723dd3f5bd25a29e2.tar.gz kernel_samsung_smdk4412-6e49949c5e9e04d64e16df3723dd3f5bd25a29e2.tar.bz2 kernel_samsung_smdk4412-6e49949c5e9e04d64e16df3723dd3f5bd25a29e2.zip | |
[SCSI] Log msg when getting Unit Attention
If the user accidentally changes LUN mappings or it occurs
due to a bug, then it can cause data corruption that can take
months and months to track down. This patch adds a log
message when getting REPORT_LUNS_DATA_CHANGED and it adds
a generic message for other Unit Attentions with asc == 0x3f.
We are working on adding support for handling of these errors,
but I think until then we should at least log a message so
tracking down problems as a result of one of these changes
is a little easier.
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers/scsi')
| -rw-r--r-- | drivers/scsi/scsi_error.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c index a5d630f5f51..c60cffbefa3 100644 --- a/drivers/scsi/scsi_error.c +++ b/drivers/scsi/scsi_error.c @@ -307,6 +307,19 @@ static int scsi_check_sense(struct scsi_cmnd *scmd) (sshdr.asc == 0x04) && (sshdr.ascq == 0x02)) return FAILED; + if (sshdr.asc == 0x3f && sshdr.ascq == 0x0e) + scmd_printk(KERN_WARNING, scmd, + "Warning! Received an indication that the " + "LUN assignments on this target have " + "changed. The Linux SCSI layer does not " + "automatically remap LUN assignments.\n"); + else if (sshdr.asc == 0x3f) + scmd_printk(KERN_WARNING, scmd, + "Warning! Received an indication that the " + "operating parameters on this target have " + "changed. The Linux SCSI layer does not " + "automatically adjust these parameters.\n"); + if (blk_barrier_rq(scmd->request)) /* * barrier requests should always retry on UA |