[Bug 1020436] Re: Cannot read superblock after FC multipath failover

Wed Jul 11 04:25:40 UTC 2012

I note this segfault has appeared in dmesg on the last couple of boots.

[  304.214560] multipathd[3083]: segfault at a ip 00007f5eb838798a sp
00007fffb225ebb0 error 4 in libc-2.11.1.so[7f5eb8310000+17a000]

After adjusting the blacklist, updating initrd and rebooting, the same
behaviour is exhibited when I shut the active FC port:

[  429.234838] qla2xxx 0000:24:00.0: LOOP DOWN detected (2 3 0).
[  459.165399]  rport-6:0-1: blocked FC remote port time out: removing target and saving binding
[  459.165875]  rport-6:0-0: blocked FC remote port time out: removing target and saving binding
[  459.166496] device-mapper: multipath: Failing path 8:112.
[  459.166573] device-mapper: multipath: Failing path 8:128.
[  459.166765] device-mapper: multipath: Failing path 8:144.
[  459.166831] device-mapper: multipath: Failing path 8:160.
[  459.166914] device-mapper: multipath: Failing path 8:176.
[  459.166965] device-mapper: multipath: Failing path 8:192.
[  459.219341] sd 6:0:1:0: [sdk] Synchronizing SCSI cache
[  459.219374] sd 6:0:1:0: [sdk] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
[  459.220728] device-mapper: multipath: Failing path 8:112.
[  459.299111] sd 6:0:1:1: [sdl] Synchronizing SCSI cache
[  459.299138] sd 6:0:1:1: [sdl] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
[  459.300305] device-mapper: multipath: Failing path 8:128.
[  459.378913] sd 6:0:1:2: [sdm] Synchronizing SCSI cache
[  459.378943] sd 6:0:1:2: [sdm] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
[  459.381678] device-mapper: multipath: Failing path 8:144.
[  459.430852] sd 6:0:0:1: [sdi] Unhandled error code
[  459.430854] sd 6:0:0:1: [sdi] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
[  459.430857] sd 6:0:0:1: [sdi] CDB: Read(10): 28 00 00 7f ff 80 00 00 08 00
[  459.430862] end_request: I/O error, dev sdi, sector 8388480
[  459.431165] sd 6:0:0:1: [sdi] Unhandled error code
[  459.431166] sd 6:0:0:1: [sdi] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
[  459.431168] sd 6:0:0:1: [sdi] CDB: Read(10): 28 00 00 7f ff f0 00 00 08 00
[  459.431173] end_request: I/O error, dev sdi, sector 8388592
[  459.431473] sd 6:0:0:1: [sdi] Unhandled error code
[  459.431475] sd 6:0:0:1: [sdi] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
[  459.431477] sd 6:0:0:1: [sdi] CDB: Read(10): 28 00 00 00 00 00 00 00 08 00
[  459.431482] end_request: I/O error, dev sdi, sector 0
[  459.431767] sd 6:0:0:1: [sdi] Unhandled error code
[  459.431770] sd 6:0:0:1: [sdi] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
[  459.431772] sd 6:0:0:1: [sdi] CDB: Read(10): 28 00 00 00 00 08 00 00 08 00
[  459.431776] end_request: I/O error, dev sdi, sector 8
[  459.432072] sd 6:0:0:1: [sdi] Unhandled error code
[  459.432073] sd 6:0:0:1: [sdi] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
[  459.432075] sd 6:0:0:1: [sdi] CDB: Read(10): 28 00 00 00 00 00 00 00 08 00
[  459.432081] end_request: I/O error, dev sdi, sector 0
[  459.432397] sd 6:0:0:2: [sdj] Unhandled error code
[  459.432399] sd 6:0:0:2: [sdj] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
[  459.432401] sd 6:0:0:2: [sdj] CDB: Read(10): 28 00 00 7f ff 80 00 00 08 00
[  459.432406] end_request: I/O error, dev sdj, sector 8388480
[  459.432712] sd 6:0:0:2: [sdj] Unhandled error code
[  459.432714] sd 6:0:0:2: [sdj] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
[  459.432717] sd 6:0:0:2: [sdj] CDB: Read(10): 28 00 00 7f ff f0 00 00 08 00
[  459.432723] end_request: I/O error, dev sdj, sector 8388592
[  459.433034] sd 6:0:0:2: [sdj] Unhandled error code
[  459.433036] sd 6:0:0:2: [sdj] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
[  459.433039] sd 6:0:0:2: [sdj] CDB: Read(10): 28 00 00 00 00 00 00 00 08 00
[  459.433045] end_request: I/O error, dev sdj, sector 0
[  459.433345] sd 6:0:0:2: [sdj] Unhandled error code
[  459.433347] sd 6:0:0:2: [sdj] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
[  459.433350] sd 6:0:0:2: [sdj] CDB: Read(10): 28 00 00 00 00 08 00 00 08 00
[  459.433356] end_request: I/O error, dev sdj, sector 8
[  459.433672] sd 6:0:0:2: [sdj] Unhandled error code
[  459.433674] sd 6:0:0:2: [sdj] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
[  459.433677] sd 6:0:0:2: [sdj] CDB: Read(10): 28 00 00 00 00 00 00 00 08 00
[  459.433684] end_request: I/O error, dev sdj, sector 0
[  459.456208] sd 6:0:0:0: [sdh] Synchronizing SCSI cache
[  459.456236] sd 6:0:0:0: [sdh] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
[  459.465583] sd 6:0:0:2: [sdj] Unhandled error code
[  459.465585] sd 6:0:0:2: [sdj] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
[  459.465588] sd 6:0:0:2: [sdj] CDB: Read(10): 28 00 00 00 00 00 00 00 08 00
[  459.465593] end_request: I/O error, dev sdj, sector 0
[  459.548504] sd 6:0:0:1: [sdi] Synchronizing SCSI cache
[  459.548540] sd 6:0:0:1: [sdi] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
[  459.625817] sd 6:0:0:2: [sdj] Synchronizing SCSI cache
[  459.625846] sd 6:0:0:2: [sdj] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
[  464.012300] I/O error in filesystem ("dm-4") meta-data dev dm-4 block 0x4c498e0       ("xfs_trans_read_buf") error 5 buf count 4096
[  464.012801] I/O error in filesystem ("dm-4") meta-data dev dm-4 block 0x4c498e0       ("xfs_trans_read_buf") error 5 buf count 4096

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Title:
  Cannot read superblock after FC multipath failover

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