[linux-lvm] Thank you...
Heinz J . Mauelshagen
mauelshagen at sistina.com
Mon Apr 14 04:34:01 UTC 2003
On Thu, Apr 10, 2003 at 04:47:31PM -0400, travis at usi.net wrote:
> Hello All,
> Just wanted to give a special thanks to Anders Widman
> and Heinz Mauelshagen for their help in resolving the error
> condition I was receiving with my disk devices while trying to
> run vgexport. It was, in fact, duplicate PV entries in the
> directory /etc/lvmconf Apparently, the devices were used
> previously as part of another volume group and the entries were
> never cleaned up! I am back up and running now so thanks!
> I have a quick question on the ability of LVM with
> respect to redudant paths. With my HP servers we are able
> to run vgextend after vgcreate has created a volume group to
> indicate an alternate path. Like so:
> # pvcreate /dev/rdsk/c2t0d1
> # pvcreate /dev/rdsk/c2t1d1
> # mkdir /dev/vgoradata
> # mknod <truncated>
> # vgcreate /dev/vgoradata /dev/dsk/c2t0d1
> <Now, here is what I would like to do with
> LVM on Linux>
> # vgextend /dev/vgoradata /dev/dsk/c2t1d1
> # lvcreate -l 4000 -n oradata /dev/vgoradata
> # lvextend -m 1 /dev/vgoradata/oradata
> Now, I am using 1.0.3 and before I tear my current setup down
> I was wondering if there is a way to do the same thing with
> LVM for Linux (maybe 2.0 supports this???). Okay, again, thank
> you for your time!!!
IBM Germany coded a multipath extension for LVM1 which got included
in the SuSE distribution (not supported by Sistina).
You should be able to get patches from them.
Because Sistina offers LVM2/device-mapper (L)GPLed which gets all new
features added, we discontinued to add any new features to LVM1 about
a year ago. We _do_ support LVM1 (bug fixes, user support).
We are close to the LVM2.0 release which will be LVM1 feature compatible.
Multipathing (or redundant paths) is a planned 2.2 feature.
> linux-lvm mailing list
> linux-lvm at sistina.com
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
Heinz -- The LVM Guy --
*** Software bugs are stupid.
Nevertheless it needs not so stupid people to solve them ***
Heinz Mauelshagen Sistina Software Inc.
Senior Consultant/Developer Am Sonnenhang 11
Mauelshagen at Sistina.com +49 2626 141200
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