Bug 373491 - scsi_reserve causes "reservation conflict" messages
scsi_reserve causes "reservation conflict" messages
Product: Red Hat Enterprise Linux 5
Classification: Red Hat
Component: cman (Show other bugs)
All Linux
low Severity low
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Assigned To: Ryan O'Hara
Cluster QE
Depends On:
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Reported: 2007-11-09 14:19 EST by Ryan O'Hara
Modified: 2009-04-16 19:00 EDT (History)
1 user (show)

See Also:
Fixed In Version: RHBA-2008-0347
Doc Type: Bug Fix
Doc Text:
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Last Closed: 2008-05-21 11:58:19 EDT
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RHEL 7.3 requirements from Atomic Host:
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Description Ryan O'Hara 2007-11-09 14:19:36 EST
The scsi_reserve init script produces "reservation conflict" messages in
/var/log/messages. Appears this is due to calling sg_persist to create
registration without checking to see if key is already registered.

Possible solutions include checking for existing registration or us the
"register and ignore" option for sg_persist.
Comment 2 RHEL Product and Program Management 2008-01-07 15:45:19 EST
This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux maintenance release.  Product Management has requested
further review of this request by Red Hat Engineering, for potential
inclusion in a Red Hat Enterprise Linux Update release for currently deployed
products.  This request is not yet committed for inclusion in an Update
Comment 3 Ryan O'Hara 2008-01-18 18:09:36 EST
Fixed. The scsi_reserve script now calls sg_persist with -I option, which
registers a key with a device and ignores any previous keys registered for the
I_T nexus. The cause of the "reservation conflict" messages at startup were due
to the fact that the node (I_T nexus, really) already had a key registered on
that device. We would see a "reservation conflict" message for each device.

This fix will ignore any existing registrations for the I_T nexus. Thus, each
time  we run 'scsi_reserve start' it will overwrite any existing registrations
for that I_T nexus.
Comment 6 errata-xmlrpc 2008-05-21 11:58:19 EDT
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.


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