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Re: [linux-lvm] lvm and fstab



On Thu, Jun 29, 2006 at 04:30:19PM +0200, ThomasC. wrote:
> Cristian Livadaru wrote:
> >On Thu, Jun 29, 2006 at 04:10:31PM +0200, ThomasC. wrote:
> >>Hi,
> >>
> >>I am using RHEL3.
> >>I have been reading the LVM howto and it is very clear but i am missing 
> >>something anyways.
> >>During the setup with DiskDruid i created a Volume group and two logical 
> >>volumes.
> >>One LV for /opt and another one for /stage.
> >>After rebooting the OS i don't have any /stage partition.
> >>
> >>lvscan
> >>lvscan -- ACTIVE            "/dev/Volume00/LogVol00" [19.53 GB]
> >>lvscan -- ACTIVE            "/dev/Volume00/LogVol01" [19.53 GB]
> >>lvscan -- 2 logical volumes with 39.06 GB total in 1 volume group
> >>lvscan -- 2 active logical volumes
> >>
> >>But the fstab doesn't point to any Logical volume:
> >>
> >>The fstab contains
> >>LABEL=/1                /                       ext3    defaults        1 
> >>1
> >>LABEL=/boot             /boot                   ext3    defaults        1 
> >>2
> >>none                    /dev/pts                devpts  gid=5,mode=620  0 
> >>0
> >>none                    /proc                   proc    defaults        0 
> >>0
> >>none                    /dev/shm                tmpfs   defaults        0 
> >>0
> >>/dev/cciss/c0d0p3       swap                    swap    defaults        0 
> >>0
> >>/dev/cdrom              /mnt/cdrom              udf,iso9660 
> >>noauto,owner,kudzu,ro 0 0
> >>
> >>and a df -h returns
> >>
> >>[root Pearl remarkit]# df -h
> >>Filesystem            Size  Used Avail Use% Mounted on
> >>/dev/cciss/c0d0p4     9.7G  2.4G  6.8G  27% /
> >>/dev/cciss/c0d0p1      97M   14M   78M  15% /boot
> >>none                  1.9G     0  1.9G   0% /dev/shm
> >>
> >>
> >>So i don't understand what is really inside the logical volumes are they 
> >>"empty" right now?
> >>
> >
> >I don't know what Diskdruid does since I don't know RH but you have to
> >enter the mount points manualy in fstab or mount the partitions manualy
> >...
> >you could do a mount /dev/Volume00/LogVol00 /opt and then you should
> >have what you want.
> >
> >Best Regards, Cristian Livadaru
> Thats what i thought but the weird thing is that i can already access 
> /opt so i am not very enthusiastic trying to mount it again....
> 

but this means that opt is NOT on your LVM!
it's on /dev/cciss/c0d0p4

if you want to move the content of opt to your LVM you would have to
boot some rescue disc or a knoppix and move the data to the lvm, actualy
it should be ok if you do it live. copy the data (cp -ax ...), rename opt and mount
your lvm as /opt



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