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_mikec_
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Joined: 22 May 2004
Posts: 386
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 Posted: Fri Oct 13, 2006 7:44 pm Post subject: LVM2 partitions can't mount |
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seems to be an easy one to fix yet i couldn't find an answer to my problem.. i am trying to fix a gentoo installation after trying to apply a splash boot to the kernel using genkernel..
command i did on a LVM partitioned hard disk..
| Quote: | | genkernel --gensplash=killer initrd |
i forgot --lvm2 and now my system wont boot.. see pics..
Pic 1 - Pic 2 - Pic 3 - Pic 4
now, using my gentoo livecd i am trying to fix this problem
mount -t 8e /dev/hda3/ /mnt/gentoo
| Quote: |
mount: unknown filesystem type '8e'
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initializing LVM partitions
pvscan
| Quote: | PV /dev/hda3 VG VolGroup00 lvm2 [60.50 GB / 32.00 MB free]
Total: 1 [60.50 GB] / in use: 1 [60.50 GB] / in no VG: 0 [0 ] |
pvcreate --ff /dev/hda3
| Quote: | /dev/cdrom: open failed: Read-only file system
Attempt to close device '/dev/cdrom' which is not open.
Really INITIALIZE physical volume "/dev/hda3" of volume group "VolGroup00" [y/n]? y
Can't open /dev/hda3 exclusively. Mounted filesystem? |
mount -l
| Quote: | /dev/ROOT on / type xfs (rw,noatime)
/dev/hdd on /mnt/cdrom type iso9660 (ro,noexec,nosuid,nodev)
/dev/loop0 on /mnt/livecd type squashfs (ro)
proc on /proc type proc (rw)
sysfs on /sys type sysfs (rw,nosuid,nodev,noexec)
udev on /dev type tmpfs (rw,nosuid)
devpts on /dev/pts type devpts (rw,nosuid,noexec)
none on /dev/shm type tmpfs (rw)
tmpfs on /dev/shm type tmpfs (rw)
tmpfs on /mnt/livecd/usr/portage type tmpfs (rw)
usbfs on /proc/bus/usb type usbfs (rw,noexec,nosuid,devmode=0664,devgid=85)
binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,noexec,nosuid,nodev)
none on /mnt/livecd/usr/kde/3.5/share/config/kdm type tmpfs (rw)
none on /mnt/livecd/usr/NX/home/nx type tmpfs (rw)
none on /mnt/livecd/usr/NX/var/db type tmpfs (rw)
none on /mnt/livecd/usr/portage type tmpfs (rw)
none on /mnt/livecd/opt/anaconda/usr/lib/anaconda type tmpfs (rw)
none on /mnt/livecd/usr/share/X11/xkb type tmpfs (rw) |
/dev/hda3 does not seem to be mounted, what can i do now?
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(8 Mars 2005 - 07:52:46)
(18 September 2017 - 11:25:35) |
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dmartinsca
Guru
Joined: 09 Dec 2005
Posts: 303
Location: Ontario, Canada
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| Posted: Fri Oct 13, 2006 11:43 pm Post subject: Re: LVM2 partitions can't mount |
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Ok, a few things I see wrong here when you are trying to get your partitions mounted while booted from the livecd. I don't use genkernel, splash image, or have my root partition as LVM so I can't help with those bits, however..
| Quote: | | mount -t 8e /dev/hda3/ /mnt/gentoo |
This isn't right. For one, 8e is a partition type, not a filesystem type which is what the mount command wants. (ext2,ext3,nfs,smbfs,xfs,etc..) Also, if /dev/hda3 is a physical lvm volume then it should never be mounted directly, you just can't do it.
| Quote: | pvscan
| Quote: |
PV /dev/hda3 VG VolGroup00 lvm2 [60.50 GB / 32.00 MB free]
Total: 1 [60.50 GB] / in use: 1 [60.50 GB] / in no VG: 0 [0 ] |
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This looks fine, it's basically saying you have one physical volume (/dev/hda3) which is part of volume group "VolGroup00".
| Quote: |
pvcreate --ff /dev/hda3
| Quote: | /dev/cdrom: open failed: Read-only file system
Attempt to close device '/dev/cdrom' which is not open.
Really INITIALIZE physical volume "/dev/hda3" of volume group "VolGroup00" [y/n]? y
Can't open /dev/hda3 exclusively. Mounted filesystem? |
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Damn.. that may have destroyed everything.. /dev/hda3 was already a physical volume which was a part of VolGroup00, which probably contained your logical volumes containing your filesystems which contained your data.. 
Basically the problem here was that you should have tried to mount /dev/VolGroup00/<logical volume name> as your root partition.
Run 'lvscan' this should list the path of the files in /dev you need to mount as your partitions, hopefully 
Post the output of the following if you're stuck:
pvscan
vgscan
lvscan |
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_mikec_
Guru
Joined: 22 May 2004
Posts: 386
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| Posted: Sat Oct 14, 2006 11:37 am Post subject: |
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| Quote: | mount -t lvm /dev/VolGroup00/LogVol00 /mnt/gentoo
mount: unknown filesystem type 'lvm' |
| Quote: | mount -t lvm2 /dev/VolGroup00/LogVol00 /mnt/gentoo
mount: unknown filesystem type 'lvm2' |
lvscan
| Quote: | inactive '/dev/VolGroup00/LogVol00' [59.47 GB] inherit
inactive '/dev/VolGroup00/LogVol01' [1.00 GB] inherit
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pvscan
| Quote: | PV /dev/hda3 VG VolGroup00 lvm2 [60.50 GB / 32.00 MB free]
Total: 1 [60.50 GB] / in use: 1 [60.50 GB] / in no VG: 0 [0 ]
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vgscan
| Quote: | Reading all physical volumes. This may take a while...
Found volume group "VolGroup00" using metadata type lvm2
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ps.. i will never use LVM partitions ever again 
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(8 Mars 2005 - 07:52:46)
(18 September 2017 - 11:25:35) |
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_mikec_
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Joined: 22 May 2004
Posts: 386
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| Posted: Sat Oct 14, 2006 11:53 am Post subject: |
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well i finaly was able to mount the dam partition..
#change the volumes that exist to active
vgchange -ay
| Quote: | | 2 logical volume(s) in volume group "VolGroup00" now active |
#mount the logical partition
mount /dev/VolGroup00/LogVol00 /mnt/gentoo
thank you for your help.
cheers
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(8 Mars 2005 - 07:52:46)
(18 September 2017 - 11:25:35) |
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nixnut
Bodhisattva
Joined: 09 Apr 2004
Posts: 10974
Location: the dutch mountains
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| Posted: Sat Oct 14, 2006 4:38 pm Post subject: |
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Moved from Installing Gentoo to Other Things Gentoo.
Not about getting gentoo installed, so moved here.
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