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c360652006
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>
85 lines
3.7 KiB
C
85 lines
3.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _SCSI_SCSI_DEVINFO_H
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#define _SCSI_SCSI_DEVINFO_H
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/*
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* Flags for SCSI devices that need special treatment
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*/
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/* Only scan LUN 0 */
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#define BLIST_NOLUN ((__force blist_flags_t)(1ULL << 0))
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/* Known to have LUNs, force scanning.
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* DEPRECATED: Use max_luns=N */
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#define BLIST_FORCELUN ((__force blist_flags_t)(1ULL << 1))
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/* Flag for broken handshaking */
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#define BLIST_BORKEN ((__force blist_flags_t)(1ULL << 2))
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/* unlock by special command */
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#define BLIST_KEY ((__force blist_flags_t)(1ULL << 3))
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/* Do not use LUNs in parallel */
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#define BLIST_SINGLELUN ((__force blist_flags_t)(1ULL << 4))
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/* Buggy Tagged Command Queuing */
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#define BLIST_NOTQ ((__force blist_flags_t)(1ULL << 5))
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/* Non consecutive LUN numbering */
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#define BLIST_SPARSELUN ((__force blist_flags_t)(1ULL << 6))
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/* Avoid LUNS >= 5 */
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#define BLIST_MAX5LUN ((__force blist_flags_t)(1ULL << 7))
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/* Treat as (removable) CD-ROM */
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#define BLIST_ISROM ((__force blist_flags_t)(1ULL << 8))
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/* LUNs past 7 on a SCSI-2 device */
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#define BLIST_LARGELUN ((__force blist_flags_t)(1ULL << 9))
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/* override additional length field */
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#define BLIST_INQUIRY_36 ((__force blist_flags_t)(1ULL << 10))
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#define __BLIST_UNUSED_11 ((__force blist_flags_t)(1ULL << 11))
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/* do not do automatic start on add */
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#define BLIST_NOSTARTONADD ((__force blist_flags_t)(1ULL << 12))
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#define __BLIST_UNUSED_13 ((__force blist_flags_t)(1ULL << 13))
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#define __BLIST_UNUSED_14 ((__force blist_flags_t)(1ULL << 14))
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#define __BLIST_UNUSED_15 ((__force blist_flags_t)(1ULL << 15))
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#define __BLIST_UNUSED_16 ((__force blist_flags_t)(1ULL << 16))
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/* try REPORT_LUNS even for SCSI-2 devs (if HBA supports more than 8 LUNs) */
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#define BLIST_REPORTLUN2 ((__force blist_flags_t)(1ULL << 17))
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/* don't try REPORT_LUNS scan (SCSI-3 devs) */
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#define BLIST_NOREPORTLUN ((__force blist_flags_t)(1ULL << 18))
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/* don't use PREVENT-ALLOW commands */
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#define BLIST_NOT_LOCKABLE ((__force blist_flags_t)(1ULL << 19))
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/* device is actually for RAID config */
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#define BLIST_NO_ULD_ATTACH ((__force blist_flags_t)(1ULL << 20))
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/* select without ATN */
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#define BLIST_SELECT_NO_ATN ((__force blist_flags_t)(1ULL << 21))
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/* retry HARDWARE_ERROR */
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#define BLIST_RETRY_HWERROR ((__force blist_flags_t)(1ULL << 22))
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/* maximum 512 sector cdb length */
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#define BLIST_MAX_512 ((__force blist_flags_t)(1ULL << 23))
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#define __BLIST_UNUSED_24 ((__force blist_flags_t)(1ULL << 24))
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/* Disable T10 PI (DIF) */
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#define BLIST_NO_DIF ((__force blist_flags_t)(1ULL << 25))
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/* Ignore SBC-3 VPD pages */
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#define BLIST_SKIP_VPD_PAGES ((__force blist_flags_t)(1ULL << 26))
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#define __BLIST_UNUSED_27 ((__force blist_flags_t)(1ULL << 27))
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/* Attempt to read VPD pages */
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#define BLIST_TRY_VPD_PAGES ((__force blist_flags_t)(1ULL << 28))
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/* don't try to issue RSOC */
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#define BLIST_NO_RSOC ((__force blist_flags_t)(1ULL << 29))
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/* maximum 1024 sector cdb length */
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#define BLIST_MAX_1024 ((__force blist_flags_t)(1ULL << 30))
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/* Use UNMAP limit for WRITE SAME */
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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_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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((__force __u64)__BLIST_LAST_USED - 1ULL)))
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#define __BLIST_UNUSED_MASK (__BLIST_UNUSED_11 | \
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__BLIST_UNUSED_13 | \
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__BLIST_UNUSED_14 | \
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__BLIST_UNUSED_15 | \
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__BLIST_UNUSED_16 | \
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__BLIST_UNUSED_24 | \
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__BLIST_UNUSED_27 | \
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__BLIST_HIGH_UNUSED)
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#endif
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