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URGENT! NSM-160 volume offline with Unrecoverable I/O

PLalonde
Occasional Visitor

URGENT! NSM-160 volume offline with Unrecoverable I/O

I'm seriously hoping someone can help me with this.

We have an NSM-160 that was acting as our interim "backup" SAN while we were provisioning a new NSM-2120. It was running fine for several weeks until yesterday when the following occured:

scsi0: PCI Parity Error
scsi0: Unrecoverable I/O

Since then, SAN/iQ has brought the Volume down with a status of "Unrecoverable I/O" and nothing we do will bring it back up. The storage node itself says "not ready" so I can't even repair it in the CMC.

We've got ~500GB of very sensitive data stored on that volume. The volume was used by two VMware vSphere servers and contains a VMFS filesystem.

Is there any tool, utility, or process to bring the volume back online so I can extract the contents?

Can dbd_store be invoked in such a way that "forces" the volume back online, even in read-only mode so I can recover our data?

PLEASE HELP!

Thank you everyone.
Paul
1 REPLY
PLalonde
Occasional Visitor

Re: URGENT! NSM-160 volume offline with Unrecoverable I/O

Some further information... looks like some I/Os didn't get committed out. Anybody know how to clear the journal log and get things back up and running?

Sep 20 21:36:10 NSM160-NODE1 dbd_store[9710]: DBD_STORE_JOURNAL_V1:block checksum 0x0a1f8c87 does not equal calculated checksum 0x632469a5
Sep 20 21:36:10 NSM160-NODE1 dbd_store[9710]: DBD_STORE_JOURNAL_V1:/dev/scsi/host0/bus0/target0/lun0/part2 ofs=0x18fafa00 invalid block
Sep 20 21:36:10 NSM160-NODE1 dbd_store[9710]: DBD_STORE_JOURNAL_V1:block checksum 0xd208042c does not equal calculated checksum 0xe4756f7c
Sep 20 21:36:10 NSM160-NODE1 dbd_store[9710]: DBD_STORE_JOURNAL_V1:/dev/scsi/host0/bus0/target0/lun0/part2 ofs=0x18fafc00 invalid block
Sep 20 21:36:10 NSM160-NODE1 dbd_store[9710]: DBD_STORE_JOURNAL_V1:block checksum 0xe91500a2 does not equal calculated checksum 0x802ee580
Sep 20 21:36:10 NSM160-NODE1 dbd_store[9710]: DBD_STORE_JOURNAL_V1:/dev/scsi/host0/bus0/target0/lun0/part2 ofs=0x18fafe00 invalid block
Sep 20 21:36:10 NSM160-NODE1 dbd_store[9710]: DBD_STORE_JOURNAL_V1:block checksum 0x00000000 does not equal calculated checksum 0xffffffff
Sep 20 21:36:10 NSM160-NODE1 dbd_store[9710]: DBD_STORE_JOURNAL_V1:/dev/scsi/host0/bus0/target0/lun0/part2 ofs=0x18fbfe00 invalid block