[linux-lvm] liblvm IOCTL/sysfs interface
Sandeep K Sinha
sandeepksinha at gmail.com
Thu Mar 19 11:31:03 UTC 2009
I would like to know if there is any means currently to know the complete
geometry of a LVM volume.
e.g, If a volume has 3 PV(targets).
So, we should be able to extract some information like.
Name of Volume.
Name of Volume Group.
Name, Range and size for each of the Physical devices involved.
I execute the following steps.
1. pvcreate /dev/sda5 /dev/sda6
2. vgcreate vg /dev/sda5 /dev/sda6
3. lvcreate vg -L 5G
So, I should see the information like.
target1 - /dev/sda5 ---- 0 -- 10000 ( BEGIN -- Length )
target2 - /dev/sda6 ---- 10001 -- 4000
We do maintain these informations inside the kernel, We should atleast
have an ioctl or sysfs based interface to extract
Liblvm is under development, won't it be of a good use to provide such
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