Invalid disk device for 'cdsdisk’ error

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I was trying to setup shared storage between two VMs (Linux) for my virtual environment. Hence, I added another hard disk (or shared storage) between those two virtual boxes.
However, before creating VxVM DiskGroup, when I tried to initialize the shared storage (disk) that I configured between two VMs then one of the errors that surprised me was…
“VxVM vxdisksetup ERROR V-5-2-1814 sdb: Invalid disk device for 'cdsdisk'”
Below is list of CLIs that I used to circumvent this issue and create a DiskGroup...
--------------------------Start Of Shell-----------------------------------
[root@ts ~]# vxdisk -o alldgs list
DEVICE       TYPE            DISK         GROUP        STATUS
sda          auto:none       -            -            online invalid
sdb          auto:none       -            -            online invalid
[root@ts ~]# /etc/vx/bin/vxdisksetup -i sdb
VxVM vxdisksetup ERROR V-5-2-1814 sdb: Invalid disk device for 'cdsdisk' format
[root@ts ~]# vxdisk list sdb
Device:    sdb
devicetag: sdb
type:      auto
info:      format=none
flags:     online ready private autoconfig invalid
pubpaths:  block=/dev/vx/dmp/sdb char=/dev/vx/rdmp/sdb
guid:      -
udid:
VMware%5FVirtual%20disk%5FOTHER%5FDISKS%5Fts.ts.com%5F%2Fdev%2Fsdb
site:      -
Multipathing information:
numpaths:   1
sdb     state=enabled
[root@ts ~]# vxdctl enable
[root@ts ~]# fdisk -l
Disk /dev/sda: 8589 MB, 8589934592 bytes
255 heads, 63 sectors/track, 1044 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1          13      104391   83  Linux
/dev/sda2              14          78      522112+  82  Linux swap
/dev/sda3              79        1044     7759395   83  Linux
Disk /dev/sdb: 2147 MB, 2147483648 bytes
255 heads, 63 sectors/track, 261 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
   Device Boot      Start         End      Blocks   Id  System
/dev/sdb4               1         259     2080386    5  Extended
[root@ts ~]# /usr/lib/vxvm/diag.d/vxscsi -g sdb
Cannot get disk geometry on sdb !
[root@ts ~]# /etc/vx/bin/vxdisksetup -i sdb format=sliced
[root@ts ~]# vxdg init dg01 sdb cds=off
[root@ts ~]# vxdisk -o alldgs list
DEVICE       TYPE            DISK         GROUP        STATUS
sda          auto:none       -            -            online invalid
sdb          auto:sliced     sdb          dg01     online
[root@ts ~]# vxdg list
NAME         STATE           ID
dg01         enabled              1263886728.28.ts.ts.com
--------------------------End Of Shell------------------------------------
It looks like I have added IDE disk as shared storage to VMs instead of SCSI disk. However, setting disk format to sliced resolved this issue for me.

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Mandar is a seasoned software professional for more than a decade. He is Cloud, AI, IoT, Blockchain and Fintech enthusiast. He writes to benefit others from his experiences. His overall goal is to help people learn about the Cloud, AI, IoT, Blockchain and Fintech and the effects they will have economically and socially in the future.

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