how to mount an lvm (thumb) drive?
Dave Burns
tburns at hawaii.edu
Wed Nov 26 01:37:31 UTC 2008
On Tue, Nov 25, 2008 at 2:59 PM, Chris Tyler <chris at tylers.info> wrote:
>
> On Tue, 2008-11-25 at 14:30 -1000, Dave Burns wrote:
>> I have a thumb drive with fedora installed on it. When I plug in the
>> drive, /boot mounts automatically. fdisk -l shows the root partition
>> device is LVM. I would like to mount / by hand at another mount point,
>> but I can't figure out what parameter to give to -t.
>>
>> I don't think I need to do any of that. I just want to mount it. How?
>>
>> Thanks,
>> Dave
>
> I'm assuming you're talking about mounting when booted from another
> device.
No? Not sure what you mean. It's a thumb drive. Plug it into my linux
box. Mount it. That's all.
>This might be helpful:
>
> http://dailypackage.fedorabook.com/index.php?/archives/159-.html
That site does not respond at the moment.
>
> Basically:
>
> lvm vgscan # find volume groups
> lvm vgchange -ay # activate them
> lvm lvs # show VGs and LVs
>
> Then you can:
>
> mount /dev/VG/LV /mntpoint
> # replace VG and LV appropriately
Here's my try:
[root at cod ~]# lvm vgscan
Reading all physical volumes. This may take a while...
Found volume group "VolGroup00" using metadata type lvm2
Found volume group "VolGroup00" using metadata type lvm2
[root at cod ~]# lvm vgchange -ay
2 logical volume(s) in volume group "VolGroup00" now active
2 logical volume(s) in volume group "VolGroup00" now active
[root at cod ~]# lvm lvs
LV VG Attr LSize Origin Snap% Move Log Copy% Convert
LogVol00 VolGroup00 -wi-ao 230.66G
LogVol01 VolGroup00 -wi-ao 1.94G
[root at cod ~]# fdisk -l
[snip]
Device Boot Start End Blocks Id System
/dev/sdc1 * 1 25 200781 83 Linux
/dev/sdc2 26 977 7646940 8e Linux
LVM[root at cod ~]# mount /dev/VolGroup00/LogVol01 test2
/dev/mapper/VolGroup00-LogVol01 looks like swapspace - not mounted
mount: you must specify the filesystem type
[root at cod ~]# mount -t lvm2 /dev/VolGroup00/LogVol01 test2
mount: unknown filesystem type 'lvm2'
[root at cod ~]# mount -t ext2 /dev/VolGroup00/LogVol01 test2
mount: /dev/mapper/VolGroup00-LogVol01 already mounted or test2 busy
[root at cod ~]# mkdir test4
[root at cod ~]# mount -t ext2 /dev/VolGroup00/LogVol01 test4
mount: /dev/mapper/VolGroup00-LogVol01 already mounted or test4 busy
[root at cod ~]# mount -t swap /dev/VolGroup00/LogVol01 test4
mount: unknown filesystem type 'swap'
[root at cod ~]# mount -t ext3 /dev/VolGroup00/LogVol01 test4
mount: /dev/mapper/VolGroup00-LogVol01 already mounted or test4 busy
I am guessing wildly at the -t parameter, man mount doesn't seem to
mention lvm. I am probably confused about something.
[root at cod ~]# df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
238064272 56725108 181339164 24% /
/dev/sda1 194442 26546 157857 15% /boot
tmpfs 4098712 48 4098664 1% /dev/shm
/dev/sdb1 240308484 191772 227909724 1% /export/cod
/dev/sdc1 194442 18628 165775 11% /media/_boot
Should there perhaps be a /dev/mapper/VolGroup00-LogVol01 in the df output?
Thanks,
Dave
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