During backups, Symantec System Recovery Linux adds a disk signature on physical disks that have no disk signature.

Article:TECH198699  |  Created: 2012-10-22  |  Updated: 2013-09-23  |  Article URL http://www.symantec.com/docs/TECH198699
Article Type
Technical Solution


Issue



During backups, Symantec System Recovery Linux (SSRL) adds a disk signature on physical disks (/dev/sdX) that have no disk signature. Even if the backup job works successfully and the backed up disk has no problem, the applications that use the disks without disk signature may terminate unexpectedly, fail to start, or report some disk errors.

NOTE1:
SSRL never replaces the existing disk signature on the physical disks.

NOTE2:
A command to view the current disk signature on /dev/sdX is as follows.
# hexdump -s 4 -n 440 /dev/sdX
 


Environment



Red Hat 5.x / 6.x / x64 / x86

The issue does not depend on the distribution, version or architecture.
 


Cause



When there is no data (zero-padding) in 4 bytes from offset 440 (0x1B8) on the detected physical disks, SSRL adds the disk signature on them during backups.

 


Solution



In case of Symantec System Recovery Linux 2011, please apply Hotfix 1. This issue has been resolved by Hotfix 1.

In case of Symantec System Recovery Linux 2013, please apply Service Pack 1. This issue has been resolved by Service Pack 1.

 


Supplemental Materials

SourceETrack
Value2972109
Description

SSRL adds the new disk signature on physical disks (/dev/sdc) during backups.




Article URL http://www.symantec.com/docs/TECH198699


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