Same disk indentifier is seen for multiple disks

Solution Verified - Updated -

Issue

  • Multiple disks show same disk identifier. This is causing third party backup application to fail.
Disk /dev/mapper/3600a098038303765422b494c57323848: 161.1 GB, 161061273600 bytes, 314572800 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 65536 bytes
Disk label type: dos
Disk identifier: 0x00000000

                                         Device Boot      Start         End      Blocks   Id  System
/dev/mapper/3600a098038303765422b494c57323848p1              63   314568764   157284351   83  Linux
Partition 1 does not start on physical sector boundary.

Disk /dev/mapper/3600a09803854321f512b494d69777069: 107.4 GB, 107374182400 bytes, 209715200 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 65536 bytes
Disk label type: dos
Disk identifier: 0x00000000

                                         Device Boot      Start         End      Blocks   Id  System
/dev/mapper/3600a09803854321f512b494d69777069p1              63   209712509   104856223+  83  Linux
Partition 1 does not start on physical sector boundary.

Disk /dev/mapper/3600a098abcd0376f512b494d69777071: 107.4 GB, 107374182400 bytes, 209715200 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 65536 bytes
Disk label type: dos
Disk identifier: 0x00000000

                                         Device Boot      Start         End      Blocks   Id  System
/dev/mapper/3600a098abcd0376f512b494d69777071p1              32   104857599    52428784   83  Linux

Disk /dev/mapper/3600a09801234566f512b494d69777078: 107.4 GB, 107374182400 bytes, 209715200 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 65536 bytes
Disk label type: dos

Environment

  • Red Hat Enterprise Linux 7

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