I/O hangs with 3PAR storage with SCSI error in "CDB: Unmap/Read...Sense Key: Illegal Request" in RHEL 6.3 and earlier
Issue
- mkfs.ext4 never completes on 3Par storage
- mkfs.ext4 hangs, with repeating error messages in the logs
- booting hangs, with SCSI errors and sense keys indicating Unmap was an illegal request:
sd 1:0:0:0: [sdb] Done: SUCCESS
sd 1:0:0:0: [sdb] Result: hostbyte=DID_OK driverbyte=DRIVER_OK
sd 1:0:0:0: [sdb] CDB: Unmap/Read sub-channel: 42 00 00 00 00 00 00 00 18 00
sd 1:0:0:0: [sdb] Sense Key : Illegal Request [current]
sd 1:0:0:0: [sdb] Add. Sense: Incompatible volume type
sd 1:0:0:0: [sdb] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
sd 1:0:0:0: [sdb] Sense Key : Illegal Request [current]
sd 1:0:0:0: [sdb] Add. Sense: Incompatible volume type
sd 1:0:0:0: [sdb] CDB: Unmap/Read sub-channel: 42 00 00 00 00 00 00 00 18 00
end_request: I/O error, dev sdb, sector 32768
device-mapper: multipath: Failing path 8:16.
- Paths are failing and reinstating over and over on 3Par storage
Environment
- Red Hat Enterprise Linux (RHEL) 6 Update 3 or earlier
kernelprior to release 2.6.32-279.el6
- 3PAR storage
- SCSI errors with Sense information matching the following:
sd 1:0:0:0: [sdb] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
sd 1:0:0:0: [sdb] CDB: Unmap/Read sub-channel: 42 00 00 00 00 00 00 00 18 00
sd 1:0:0:0: [sdb] Sense Key : Illegal Request [current]
sd 1:0:0:0: [sdb] Add. Sense: Incompatible volume type
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