[linux-lvm] Very tricky new install of Linux (using LVM and Kernel 2.4)
bagfors at pdc.kth.se
Thu Oct 12 09:20:13 UTC 2000
On Thu, Oct 12, 2000 at 06:26:27PM +0930, Mark Phillips wrote:
> Erik Bågfors [bagfors at pdc.kth.se] wrote:
> > This is more or less what I did. But you only need a small partition to
> > install to.
> Thanks for this! I have since been thinking about a similar plan,
> though I was thinking of perhaps initially installing the basic
> installation on another drive and then copying it across to my new
> drive (on LVM partitions). That way I could have / under LVM as well
> if I wanted.
Sure, I just didn't think it was worth the hassle.
> I have a few questions:
> 1. What is a safe way of copying between partitions? Ie is there a
> risk of corruption?
gnu cp with the -a flag can copy even stuff in /dev I've heard (and read).
I usualy use tar with a bunch of flags :)
> 2. How stable is LVM? Is it worth having your / partition as a real
> partition (not a LV) just for reliability sake? I agree that having a
> non LVM / partition makes things easier to boot up, but is this the
> only concern, or are there other reasons for not making / LVM?
I biggest reason I see is that 1) You still need a /boot that's not on lvm
(I know this is not true it you apply the latest patches that has come to
this mailinglist but I don't trust them yet) 2) rescue-reason. You can
access your / from a rescue-disk without lvm-stuff (this is also a reason
not to use reiserfs on it...)
> 3. How much space did you give to /? I'm not sure how much you would
> need. And what parts of the filesystem did you chose to put on LVM?
Here is a df from my system
: [bagfors at zyrgelkwyt]$ ; df
Filesystem 1k-blocks Used Available Use% Mounted on
/dev/hda2 102486 62462 34732 65% /
/dev/disk_vg/usr_lv 921564 842716 78848 92% /usr
/dev/disk_vg/var_lv 409580 230368 179212 57% /var
/dev/disk_vg/tmp_lv 155636 37912 117724 25% /tmp
/dev/disk_vg/src_lv 770020 712576 57444 93% /usr/src
/dev/disk_vg/home_lv 1433552 1337976 95576 94% /home
/dev/disk_vg/opt_lv 270320 213896 56424 80% /opt
2207672 1944840 262832 89% /pub/scratch
arla 1048576 0 1048576 0% /afs
You have mail in /home/bagfors/Mail/inbox
> 4. How did you deal with the 8Gig disk barrier (assuming you have a
> disk bigger than this)? Did you also have a /boot partition, or did
> you just include this in your / partition?
It's in /
> 5. Doesn't reiserfs have some stability problems and problems with nfs
> and a few other issues? Also do you need to patch the 2.4.0-test9
> kernel in order to get reiserfs? Is reiserfs going to make it into
> the 2.4 kernel?
I haven't had any problems with it. Check out the reiserfs-faq on the
Reiserfs will make it into the 2.4-kernel according to the faq. If it will
be in 2.4.0 or in later versions is not known yet.
Erik Bågfors | Center for Parallel Computers
http://erik.bagfors.nu/ | http://www.pdc.kth.se/
erik at bagfors.nu | bagfors at pdc.kth.se
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