scsi: devinfo: BLIST_RETRY_ASC_C1 for Fujitsu ETERNUS
On Fujitsu ETERNUS systems, sense code ABORTED COMMAND with ASC/Q C1/01 is used to indicate temporary condition where the storage-internal path to a target is switched from one controller to another. SCSI commands that return with this error code must be retried unconditionally (i.e. without the "maybe_retry" logic in scsi_decide_disposition); otherwise dm-multipath might initiate a failover from a healthy path e.g. for REQ_FAILFAST_DEV commands. Introduce a new blist flag for this case. [mkp: applied by hand] Signed-off-by: Martin Wilck <mwilck@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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29cfc2ab71
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c360652006
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@ -168,6 +168,7 @@ static struct {
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{"easyRAID", "X6P", NULL, BLIST_NOREPORTLUN},
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{"easyRAID", "F8", NULL, BLIST_NOREPORTLUN},
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{"FSC", "CentricStor", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
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{"FUJITSU", "ETERNUS_DXM", "*", BLIST_RETRY_ASC_C1},
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{"Generic", "USB SD Reader", "1.00", BLIST_FORCELUN | BLIST_INQUIRY_36},
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{"Generic", "USB Storage-SMC", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36}, /* FW: 0180 and 0207 */
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{"HITACHI", "DF400", "*", BLIST_REPORTLUN2},
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@ -528,6 +528,9 @@ int scsi_check_sense(struct scsi_cmnd *scmd)
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if (sshdr.asc == 0x44 && sdev->sdev_bflags & BLIST_RETRY_ITF)
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return ADD_TO_MLQUEUE;
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if (sshdr.asc == 0xc1 && sshdr.ascq == 0x01 &&
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sdev->sdev_bflags & BLIST_RETRY_ASC_C1)
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return ADD_TO_MLQUEUE;
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return NEEDS_RETRY;
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case NOT_READY:
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@ -65,8 +65,10 @@
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#define BLIST_UNMAP_LIMIT_WS ((__force blist_flags_t)(1ULL << 31))
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/* Always retry ABORTED_COMMAND with Internal Target Failure */
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#define BLIST_RETRY_ITF ((__force blist_flags_t)(1ULL << 32))
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/* Always retry ABORTED_COMMAND with ASC 0xc1 */
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#define BLIST_RETRY_ASC_C1 ((__force blist_flags_t)(1ULL << 33))
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#define __BLIST_LAST_USED BLIST_RETRY_ITF
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#define __BLIST_LAST_USED BLIST_RETRY_ASC_C1
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#define __BLIST_HIGH_UNUSED (~(__BLIST_LAST_USED | \
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(__force blist_flags_t) \
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