Ding Honghui wrote:
Hi,

My solaris storage hangs. I login to the console and there is messages[1] display on the console.
I can't login into the console and seems the IO is totally blocked.

The system is solaris 10u8 on Dell R710 with disk array Dell MD3000. 2 HBA cable connect the server and MD3000.
The symptom is random.

It is very appreciated if any one can help me out.

The SCSI target you are talking to is being reset. "Unit Attention" means it's forgotten what operating parameters have been negotiated with the system and is a warning the device might have been changed without the system knowing, and it's telling you this happened because of "device internal reset". That sort of thing can happen if the firmware in the SCSI target crashes and restarts, or the power supply blips, or if the device was swapped. I don't know anything about a Dell MD3000, but given it's happened on lots of disks at the same moment following a timeout, it looks like the array power cycled or array firmware (if any) rebooted. (Not sure if a SCSI bus reset can do this or not.)

[1]
Aug 16 13:14:16 nas-hz-02 scsi: WARNING: /pci@0,0/pci8086,3410@9/pci8086,32c@0/pci1028,1f04@8 (mpt1):
Aug 16 13:14:16 nas-hz-02       Disconnected command timeout for Target 0
Aug 16 13:14:16 nas-hz-02 scsi: WARNING: /scsi_vhci/disk@g60026b900053aa18000002a44b8f0ded (sd47): Aug 16 13:14:16 nas-hz-02 Error for Command: write(10) Error Level: Retryable Aug 16 13:14:16 nas-hz-02 scsi: Requested Block: 1380679073 Error Block: 1380679073 Aug 16 13:14:16 nas-hz-02 scsi: Vendor: DELL Serial Number: Aug 16 13:14:16 nas-hz-02 scsi: Sense Key: Unit Attention Aug 16 13:14:16 nas-hz-02 scsi: ASC: 0x29 (device internal reset), ASCQ: 0x4, FRU: 0x0 Aug 16 13:14:16 nas-hz-02 scsi: WARNING: /scsi_vhci/disk@g60026b900053aa180000029e4b8f0d61 (sd41): Aug 16 13:14:16 nas-hz-02 Error for Command: write(10) Error Level: Retryable Aug 16 13:14:16 nas-hz-02 scsi: Requested Block: 1380679072 Error Block: 1380679072 Aug 16 13:14:16 nas-hz-02 scsi: Vendor: DELL Serial Number: Aug 16 13:14:16 nas-hz-02 scsi: Sense Key: Unit Attention Aug 16 13:14:16 nas-hz-02 scsi: ASC: 0x29 (device internal reset), ASCQ: 0x4, FRU: 0x0 Aug 16 13:14:16 nas-hz-02 scsi: WARNING: /scsi_vhci/disk@g60026b900053aa18000002a24b8f0dc5 (sd45): Aug 16 13:14:16 nas-hz-02 Error for Command: write(10) Error Level: Retryable Aug 16 13:14:16 nas-hz-02 scsi: Requested Block: 1380679073 Error Block: 1380679073 Aug 16 13:14:16 nas-hz-02 scsi: Vendor: DELL Serial Number: Aug 16 13:14:16 nas-hz-02 scsi: Sense Key: Unit Attention Aug 16 13:14:16 nas-hz-02 scsi: ASC: 0x29 (device internal reset), ASCQ: 0x4, FRU: 0x0 Aug 16 13:14:16 nas-hz-02 scsi: WARNING: /scsi_vhci/disk@g60026b900053aa180000029c4b8f0d35 (sd39): Aug 16 13:14:16 nas-hz-02 Error for Command: write(10) Error Level: Retryable Aug 16 13:14:16 nas-hz-02 scsi: Requested Block: 1380679072 Error Block: 1380679072 Aug 16 13:14:16 nas-hz-02 scsi: Vendor: DELL Serial Number: Aug 16 13:14:16 nas-hz-02 scsi: Sense Key: Unit Attention Aug 16 13:14:16 nas-hz-02 scsi: ASC: 0x29 (device internal reset), ASCQ: 0x4, FRU: 0x0 Aug 16 13:14:16 nas-hz-02 scsi: WARNING: /scsi_vhci/disk@g60026b900053aa18000002984b8f0cd2 (sd35): Aug 16 13:14:16 nas-hz-02 Error for Command: write(10) Error Level: Retryable Aug 16 13:14:16 nas-hz-02 scsi: Requested Block: 1380679072 Error Block: 1380679072 Aug 16 13:14:16 nas-hz-02 scsi: Vendor: DELL Serial Number: Aug 16 13:14:16 nas-hz-02 scsi: Sense Key: Unit Attention Aug 16 13:14:16 nas-hz-02 scsi: ASC: 0x29 (device internal reset), ASCQ: 0x4, FRU: 0x0

--
Andrew Gabriel
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