Re: [linux-lvm] lvm and fstab

["ThomasC." <shoktai@gmail.com>]

Dieter St�ken wrote:
> ThomasC. wrote:
>> 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.
> 
> initializing LVM is a multi stage process.
> 
> 1. create the volume
> 
> 2. create LVs within the volume.
> 
> 3. format the LVs i.e. with "mke2fs"
> 
> 4. copy data to the LVs
> 
> 5. register the LVs with /etc/fstab to have them
>    available by default after each boot.
> 
> Don't know what "DiskDruid" is, but it seems it did not
> perform steps 4 and 5 automatically. May be you have to
> perform them by hand.
> 
> Todo:
> 
> Verify step 2) by entering "lvs" to get a list of all your
> LVs created. Try to mount one of your LVs manually.
> i.E. try "mount /dev/Volume00/LogVol00 /mnt" (if your
> LV is named "LogVol00", else choose the name the "lvs"
> command told you). If you get an error, you should try to
> format the LV by "mke2fs". Else you may look into /mnt
> if there is already some data (you should find an empty
> lost+found directory).
> 
> If there is no data, you may copy all your /opt to /mnt.
> Use: "cp -av /opt/* /mnt". Now you may umount /mnt.
> You may rename your current /opt into /opt-old and
> create a new empty /opt directory, then try:
> "mount /dev/Volume00/LogVol00 /opt".
> 
> If all looks good, you should add a line to your /etc/fstab
> to get /opt mounted by default. Test the entry by umounting
> your /opt again ("umount /opt") and try a "mount -a", which
> mounts all entries from /etc/fstab. If all works well, you will
> find /opt mounted again without any error messages.
> 
> Now you may try to reboot.
> 
> Same for /stage...
> 
> Tip:
> 
> If your "DiskDruid" named your volumes /dev/Volume00/LogVol00
> this is OK, but a big feature of LVM is, that the LV may have
> expressive names. So it may find it useful to "rename" your 
> /dev/Volume00/LogVol00 into "/dev/Volume00/OPT".
> 
> See: "man lvrename". 
> 
> Dieter
Thanks very much (all) for your valuable help. Dieter thanks very much 
the great explanation.

PS DiskDruid is the disk partitioning manager contained in RedHat 
installation.