Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
On Tue, 14 Dec 2004 04:03:30 +0100, Bernd Schubert
<bernd-schubert at web.de> wrote:
> Hello Gnubie,
Hello again Bernd,
> So you want to do 'device -> LVM2 -> LVM2 volumes -> drbd -> drbd' devices, I
> would call this drbd on top of LVM ;)
> In other words, you already have a working LVM environment, want to keep it
> and just mirror the lvm volumes one by one.
Yes, I have a working LVM2 environment as it has been configured and
setup during installation using the drakX tool.
> In principle yes, just make clearly sure, that there are really no important
> data on the partitions you want to setup drbd on. Drbd will overwrite the
> first 128MB, which might not so good for important stuff... ;-)
Since this is a fresh Mandrake Linux 10.1 Official install, three are
no important files yet on the servers except for the files in the
following volumes:
/dev/mapper/lvm-usr on /usr type reiserfs (rw,notail)
/dev/mapper/lvm-var on /var type reiserfs (rw,nodev,notail)
But I think the only volume that I really need to mirror is the
"/dev/mapper/lvm-home on /home" because as far as I know among the 4
volumes I created, it's the volume that is needed and always changes
it's files because it contains users' personal files. Please advice
me on this matter if I also need to mirror the following volumes:
/dev/mapper/lvm-tmp on /tmp type reiserfs (rw,noexec,nosuid,nodev,notail)
/dev/mapper/lvm-usr on /usr type reiserfs (rw,notail)
/dev/mapper/lvm-var on /var type reiserfs (rw,nodev,notail)
By the way, I'm planning to export the "/dev/mapper/lvm-home on /home"
volume via NFS with DRBD support because as I've said earlier, it
contains the users' personal files. Any advice on this?
> Well, we don't use lvm, but if you put drbd on top of lvm, you can just
> replace all the /dev/sdc{X} lines with /dev/lvm/...
As far as I understand now, DRBD on top of LVM2 will be my setup.
Yes, I'll try that.
Lastly, do I need to mirror my /dev/hda3 partition which is actually
my / partition? Also, when do I need to add "resources" in my
/etc/drbd.conf file? Does one "resource" equals to one
partition/volume to mirror?
> Hope it helpes,
It really helps.
Thank you very much Bernd! :)
GNUbie