[Bug 207247] GEOM multip

bugzilla-noreply at freebsd.org bugzilla-noreply at freebsd.org
Tue Feb 16 13:15:25 UTC 2016


https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=207247

            Bug ID: 207247
           Summary: GEOM multip
           Product: Base System
           Version: 10.2-RELEASE
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: kern
          Assignee: freebsd-bugs at FreeBSD.org
          Reporter: crest at bultmann.eu
                CC: freebsd-amd64 at FreeBSD.org
                CC: freebsd-amd64 at FreeBSD.org

GEOM multipath cycles through all paths to a device without remembering
previous path failures or differentiating between path and medium errors as
mentioned in #178473. I had a device fail during a planned clean power cycle
with this result:

GEOM_MULTIPATH: Error 5, da22 in jbod2data35 marked FAIL
GEOM_MULTIPATH: all paths in jbod2data35 were marked FAIL, restore da68
GEOM_MULTIPATH: da68 is now active path in jbod2data35
(da68:mps1:0:99:0): READ(10). CDB: 28 00 02 00 06 00 00 01 00 00 
(da68:mps1:0:99:0): CAM status: SCSI Status Error
(da68:mps1:0:99:0): SCSI status: Check Condition
(da68:mps1:0:99:0): SCSI sense: MEDIUM ERROR asc:11,1 (Read retries exhausted)
(da68:mps1:0:99:0): Info: 0x2000654
(da68:mps1:0:99:0): Actual Retry Count: 63
(da68:mps1:0:99:0): Error 5, Unretryable error
GEOM_MULTIPATH: Error 5, da68 in jbod2data35 marked FAIL
GEOM_MULTIPATH: all paths in jbod2data35 were marked FAIL, restore da22
GEOM_MULTIPATH: da22 is now active path in jbod2data35
(da22:mps0:0:40:0): READ(10). CDB: 28 00 02 00 06 00 00 01 00 00 
(da22:mps0:0:40:0): CAM status: SCSI Status Error
(da22:mps0:0:40:0): SCSI status: Check Condition
(da22:mps0:0:40:0): SCSI sense: MEDIUM ERROR asc:11,1 (Read retries exhausted)
(da22:mps0:0:40:0): Info: 0x2000654
(da22:mps0:0:40:0): Actual Retry Count: 63
(da22:mps0:0:40:0): Error 5, Unretryable error
GEOM_MULTIPATH: Error 5, da22 in jbod2data35 marked FAIL
GEOM_MULTIPATH: all paths in jbod2data35 were marked FAIL, restore da68
GEOM_MULTIPATH: da68 is now active path in jbod2data35

The system is stuck in the boot process in an endless loop over all paths to
the failed device.

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