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| author | Hannes Reinecke <hare@suse.de> | 2013-07-01 17:16:25 +0400 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2013-08-23 20:43:54 +0400 |
| commit | a9d6ceb838755c24dde8a0ca02c3378926fc63db (patch) | |
| tree | 8239e44e9bee3029e31ee1ac04b14b73f5f500d1 | |
| parent | 87f14e658f664a17dcdb38d3f6ae70642fcdc263 (diff) | |
| download | linux-a9d6ceb838755c24dde8a0ca02c3378926fc63db.tar.xz | |
[SCSI] return ENOSPC on thin provisioning failure
When the thin provisioning hard threshold is reached we
should return ENOSPC to inform upper layers about this fact.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
| -rw-r--r-- | block/blk-core.c | 3 | ||||
| -rw-r--r-- | drivers/scsi/scsi_error.c | 7 | ||||
| -rw-r--r-- | drivers/scsi/scsi_lib.c | 5 | ||||
| -rw-r--r-- | include/scsi/scsi.h | 1 |
4 files changed, 15 insertions, 1 deletions
diff --git a/block/blk-core.c b/block/blk-core.c index 93a18d1d3da8..68ce4d53a528 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -2318,6 +2318,9 @@ bool blk_update_request(struct request *req, int error, unsigned int nr_bytes) case -ETIMEDOUT: error_type = "timeout"; break; + case -ENOSPC: + error_type = "critical space allocation"; + break; case -EIO: default: error_type = "I/O"; diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c index 7be5229ed3a4..1b1298ce0e71 100644 --- a/drivers/scsi/scsi_error.c +++ b/drivers/scsi/scsi_error.c @@ -354,11 +354,16 @@ static int scsi_check_sense(struct scsi_cmnd *scmd) return SUCCESS; /* these are not supported */ + case DATA_PROTECT: + if (sshdr.asc == 0x27 && sshdr.ascq == 0x07) { + /* Thin provisioning hard threshold reached */ + set_host_byte(scmd, DID_ALLOC_FAILURE); + return SUCCESS; + } case COPY_ABORTED: case VOLUME_OVERFLOW: case MISCOMPARE: case BLANK_CHECK: - case DATA_PROTECT: set_host_byte(scmd, DID_TARGET_FAILURE); return SUCCESS; diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index e2af8ae0d0ca..49020d52d685 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -726,6 +726,7 @@ EXPORT_SYMBOL(scsi_release_buffers); * -ENOLINK temporary transport failure * -EREMOTEIO permanent target failure, do not retry * -EBADE permanent nexus failure, retry on other path + * -ENOSPC No write space available * -EIO unspecified I/O error */ static int __scsi_error_from_host_byte(struct scsi_cmnd *cmd, int result) @@ -744,6 +745,10 @@ static int __scsi_error_from_host_byte(struct scsi_cmnd *cmd, int result) set_host_byte(cmd, DID_OK); error = -EBADE; break; + case DID_ALLOC_FAILURE: + set_host_byte(cmd, DID_OK); + error = -ENOSPC; + break; default: error = -EIO; break; diff --git a/include/scsi/scsi.h b/include/scsi/scsi.h index e4cd3e975538..d0387d84dd68 100644 --- a/include/scsi/scsi.h +++ b/include/scsi/scsi.h @@ -457,6 +457,7 @@ static inline int scsi_is_wlun(unsigned int lun) * other paths */ #define DID_NEXUS_FAILURE 0x11 /* Permanent nexus failure, retry on other * paths might yield different results */ +#define DID_ALLOC_FAILURE 0x12 /* Space allocation on the device failed */ #define DRIVER_OK 0x00 /* Driver status */ /* |