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ESX Server 3.0.1, Patch ESX-1002960: Fix for SCSI Reservation Conflict Issue

Details

Release Date: 01/02/08
Document Last Updated: 01/02/08
 
 
Download Now
Download Size: 
32.0 MB 
Download Filename:
ESX-1002960.tgz
md5sum:
4443e9864c71c4ae12d040e0c4575ada
Product Versions
ESX Server 3.0.1
Patch Classification
General
Supersedes
Virtual Machine Migration or Reboot Required
Yes
ESX Server Host Reboot Required
Yes
PRs Fixed
186139
Affected Hardware
N/A
Affected Software
Unknown
RPMs Included
VMware-esx-vmkernel
Related CVE numbers
N/A

Summary

This patch fixes a SCSI reservation conflict issue when synchronous commands such as SCSI Reserve/Release are retried by VMkernel storage stack. If a failover happens when SCSI Reserve/Release are retried, SCSI Reserve/Release will be issued on the failed path, and I/Os issued on the active path will result in SCSI reservation conflicts.

Solution

Symptoms

When synchronous commands such as SCSI Reserve/ Release are retried by the VMkernel storage stack, the path information does not get updated. If failover happens when SCSI Reserve/ Release are retried, SCSI Reserve/Release will be issued on a redundant path, and I/Os issued on the active path will result in SCSI Reservation conflicts. An error message similar to the following might be displayed in /var/vmkernel log :

Oct 25 15:03:26 [root@root] vmkernel: 0:00:28:27.433 cpu2:1040)WARNING: SCSI: 5524: Failing I/O due to too many reservation conflicts

Deployment Considerations

Applying this patch will affect the multi-pathing feature of the ESX Server host.

Download Instructions

Download and verify the patch bundle as follows:

1. Download patch ESX-1002960 from http://www.vmware.com/download/vi/vi3_patches.html .

2. Log in to the ESX Server service console as root.

3. Create a local depot directory.

# mkdir -p /var/updates

Note: VMware recommends that you use the updates directory.

4. Change your working directory to /var/updates .

# cd /var/updates

5. Download the tar file into the /var/updates directory.

6. Verify the integrity of the downloaded tar file:

# md5sum ESX-1002960.tgz

The md5 checksum output should match the following:

4443e9864c71c4ae12d040e0c4575ada ESX-1002960.tgz

7. Extract the compressed tar archive:

# tar -xvzf ESX-1002960.tgz

8. Change to the newly created directory, /var/updates/ESX-1002960:

# cd ESX-1002960

Installation Instructions

Note: All virtual machines on the host must be either shut down or migrated using VMotion before applying the patch. A reboot of the ESX Server host is required after applying this patch.

After you download and extract the archive, and if you are in the directory that you previously created, use the following command to install the update:

# esxupdate update

To run esxupdate from a different directory, you must specify the bundle path in the command:

# esxupdate -r file://<directory>/ESX-1002960 update

For example, if the host is called depot:

# esxupdate -r file:///depot/var/updates/ESX-1002960 update

During the update process, logs appear on the terminal. You can specify the verbosity of esxupdate logs by using the -v option as shown below.

# esxupdate -v 10 file://<directory>/ESX-1002960 update

For more information how to use esxupdate, see the Patch Management for ESX Server 3 tech note at http://www.vmware.com/pdf/esx3_esxupdate.pdf .

Keywords

esxpatch;esx301

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