Re: Technical question about bringing a disk out of Maintenance Mode

From: "Chuck Timon [Microsoft]" <ctimon@xxxxxxxxxxxxxxxxxxxx>
Date: Thu, 18 May 2006 09:06:25 -0400

The problem is not with identifying the signature, it is with attaching to
the disk with that signature

00000fe0.0000095c::2006/05/16-16:20:53.511 ERR Physical Disk <Store>: SCSI:
Attach, error attaching to signature b9165c62, error 2.
00000fe0.0000095c::2006/05/16-16:20:53.511 ERR Physical Disk <Store>:
Online: Unable to attach to signature b9165c62. Error: 2.

Error 2 is "ERROR_FILE_NOT_FOUND"

Now the question becomes, "What maintenacne was performed on this disk? Was
it a process that set the Read-Only bit on the drive and left it in that
state after the process completed?" If yes, that's your problem. This is
very common issue we run into with snapshots.

--
Chuck Timon, Jr.
Microsoft Corporation
Longhorn Readiness Team
This posting is provided "AS IS" with no
warranties, and confers no rights.

The signature information is part of the cluster registry.
"Robert Stankey" <rstankey@xxxxxxxxxxxxxxxx> wrote in message
news:D429ABB1-685B-412F-9F49-AAED452AEF70@xxxxxxxxxxxxxxxx

I'm trying to solve an issue with a disk resource being brought online
after
it has been taken out of Maintenance or Extended Maintenance Mode. Here
is
an example from the cluster.log showing a successful online operation:

00000fe0.00000794::2006/05/16-16:12:29.593 INFO Physical Disk <Store>: Set
maintenance mode, InMaintenance 0 MaintainenceModeType 2 InternalState 11
status 997.
00000fe0.00000794::2006/05/16-16:12:29.593 WARN [RM] s_RmResourceControl:
Resource <Store> control operation 0x014001e6 gives status=997...
00000fe0.00001764::2006/05/16-16:12:29.593 INFO Physical Disk <Store>:
[DiskArb]------- DisksOnline -------.
0000146c.000003f0::2006/05/16-16:12:29.593 INFO [FM] FmpRmResourceControl:
RmResourceControl returned 997 for resource
1fdcf88f-d858-47ff-8707-8527207b78b0, resid=1230432...
00000fe0.00001764::2006/05/16-16:12:29.593 INFO Physical Disk <Store>:
[DiskArb] DisksOpenResourceFileHandle: Attaching to disk with signature
b9165c62
00000fe0.00001764::2006/05/16-16:12:29.593 INFO Physical Disk <Store>:
[DiskArb] DisksOpenResourceFileHandle: Disk unique id present trying new
attach
00000fe0.00001764::2006/05/16-16:12:29.593 INFO Physical Disk <Store>:
[DiskArb] DisksOpenResourceFileHandle: Retrieving disk number from
ClusDisk
registry key
00000fe0.00001764::2006/05/16-16:12:29.593 INFO Physical Disk <Store>:
[DiskArb] DisksOpenResourceFileHandle: Retrieving handle to PhysicalDrive7
00000fe0.00001764::2006/05/16-16:12:29.593 INFO Physical Disk <Store>:
[DiskArb] DisksOpenResourceFileHandle: Returns success.
00000fe0.00001764::2006/05/16-16:12:29.593 INFO Physical Disk <Store>:
[DiskArb] Arbitration Parameters: ArbAttempts 5, SleepBeforeRetry 500 ms.
00000fe0.00001764::2006/05/16-16:12:29.593 INFO Physical Disk <Store>:
[DiskArb] Read the partition info to insure the disk is accessible.
00000fe0.00001764::2006/05/16-16:12:29.593 INFO Physical Disk <Store>:
[DiskArb] Issuing GetPartInfo on signature b9165c62.
00000fe0.00001764::2006/05/16-16:12:29.593 INFO Physical Disk <Store>:
[DiskArb] GetPartInfo completed, status 0.
00000fe0.00001764::2006/05/16-16:12:29.593 INFO Physical Disk <Store>:
[DiskArb] Arbitrate for ownership of the disk by reading/writing various
disk
sectors.

Here is an example using the same disk where things failed:

00000fe0.00001748::2006/05/16-16:20:53.496 INFO Physical Disk <Store>: Set
maintenance mode, InMaintenance 0 MaintainenceModeType 2 InternalState 11
status 997.
00000fe0.00001748::2006/05/16-16:20:53.496 WARN [RM] s_RmResourceControl:
Resource <Store> control operation 0x014001e6 gives status=997...
0000146c.00000d18::2006/05/16-16:20:53.496 INFO [FM] FmpRmResourceControl:
RmResourceControl returned 997 for resource
1fdcf88f-d858-47ff-8707-8527207b78b0, resid=1230432...
00000fe0.0000095c::2006/05/16-16:20:53.496 INFO Physical Disk <Store>:
[DiskArb]------- DisksOnline -------.
00000fe0.0000095c::2006/05/16-16:20:53.496 INFO Physical Disk <Store>:
[DiskArb] DisksOpenResourceFileHandle: Attaching to disk with signature
b9165c62
00000fe0.0000095c::2006/05/16-16:20:53.511 INFO Physical Disk <Store>:
[DiskArb] DisksOpenResourceFileHandle: Disk unique id present trying new
attach
00000fe0.0000095c::2006/05/16-16:20:53.511 ERR Physical Disk <Store>:
[DiskArb] Signature of disk has changed or failed to find disk with id,
old
signature 0xb9165c62 new signature 0xb9165c62, status 2
00000fe0.00000f70::2006/05/16-16:20:53.511 INFO Physical Disk <Store>:
Query
maintenance mode, InMaintenance 1 MaintainenceModeType 1 InternalState 129
status 0.
00000fe0.00000794::2006/05/16-16:20:53.511 INFO Physical Disk <Store>:
Query
maintenance mode, InMaintenance 1 MaintainenceModeType 1 InternalState 129
status 0.
00000fe0.00000794::2006/05/16-16:20:53.511 INFO Physical Disk <Store>:
Query
maintenance mode, InMaintenance 1 MaintainenceModeType 1 InternalState 129
status 0.
00000fe0.0000095c::2006/05/16-16:20:53.511 ERR Physical Disk <Store>:
SCSI:
Attach, error attaching to signature b9165c62, error 2.
00000fe0.0000095c::2006/05/16-16:20:53.511 ERR Physical Disk <Store>:
Online: Unable to attach to signature b9165c62. Error: 2.

The problem appears to be in not identifying the disk signature properly,
yet the output message shows the same ID for both the old and new
signatures
so I don't know why it is failing. Does anyone know/can reference some
information explaining the technical details Cluster goes through during
this
process - ie. what kind of SCSI commands are issued (Inquiry, Read/Write)
and
do they look for specific information that is returned?

Thanks!

Follow-Ups:
- Re: Technical question about bringing a disk out of Maintenance Mo
  - From: Robert Stankey

References:
- Technical question about bringing a disk out of Maintenance Mode
  - From: Robert Stankey

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