Re: determining boot disk name(/dev/sd...) on RHEL LVM

[Venkata rama krishna Boddu <venkat.boddu@ymail.com>]

Following two command worked for me.

$ dmsetup ls --tree
vg_node-lv_swap (253:1)
 └─ (8:2)
vg_node-lv_root (253:0)
 └─ (8:2)
$ ls -la /dev/ | grep "8,   2"
brw-rw----   1 root disk      8,   2 Apr 24 15:42 sda2

 

Thanks
Venkat
Mobile: +91-9503043606

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From: siva krishna <hisivakrishna@gmail.com>
To: linux-lvm@redhat.com
Sent: Friday, 26 April 2013 2:49 PM
Subject: determining boot disk name(/dev/sd...) on RHEL LVM

Hi all,

 

is there a way to determine the device name (eg: /dev/sda, /dev/sdb)

on lvm partitioned disks,  when the os is booted from the lvm partitioned disk

and there are also multiple disks connected which are having lvm partions with same volume group names as the primary disk.

 

i tried doing vgdisplay

 and then correlating it's output with cat /etc/fstab, cat /etc/cmdline

 

but there are multiple volume groups having the same name so can't find from which volume the RHEL is booting

 

Thanks

siva

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