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Re: [linux-lvm] LVM and resize

Hi Heinz,

Thanks for your quick reply! :)

I am still able to mount the filesystem, but after a while it goes into
read-only mode, witch is fine. However I cannot take backup of the volume
cause it's to big, but it's not "the end of the world" if the data gets
lost, but we would like to keep data.

I've read about using pvmove -i and when i try to run it i get "command not
implemented yet". Is there a way around this ?

----- Original Message ----- 
From: "Heinz J . Mauelshagen" <mauelshagen sistina com>
To: <linux-lvm sistina com>
Sent: Tuesday, October 07, 2003 3:53 PM
Subject: Re: [linux-lvm] LVM and resize

> Looks like you are caught IRT to shrinking, because of the fsck errors.
> If you're still able to mount the filesystem, you definitely want to take
a backup
> first in order to preserve as much of your files as possible.
> Aftwards (presumably you can add another >=120g drive to your VG with
vgextend) you
> want to try moving the data off to that other disk using "pvmove -i ...",
> removing the failing one (vgreduce).
> Using device-mapper/LVM2, which enables you to remove the drive in
> (removing LVs allocated to that drive as well), doesn't help you here,
> you just have that one huge Logical Volume.
> Regards,
> Heinz    -- The LVM Guy --
> On Mon, Oct 06, 2003 at 04:25:39PM +0200, Reidar Westvik wrote:
> > Hi,
> >
> > I don't know if my question in something that Sistina supports, but i
need some pointers to make this work.
> >
> > We're running a Slackware 9.0 server with kernel 2.5.64 (gcc ver. 2.95.3
20010315) also on this server we have a LVM volume of 1TB spread over 120GB
IDE disks. Now, it seems like one of the harddrives has failed in some way.
Filesystem on the volume is EXT3.
> >
> > When i mount the volume syslog says: "kernel: EXT3-fs warning: mounting
fs with errors, running e3fschk is recommended" So i've unmounted the volume
and run e2fschk on the LVM volume. After a long wait (2 days in fact) the
server hangs, when its checking the part of the volume that is on hdf. The
box just dies, and only a powercycle will bring it back up again. The
syslogs displays the following info:
> > "kernel: hdf: dma_timer_expiry: dma status == 0x61"
> > "kernel: hdf: (__ide_dma_test_irq) called while not waiting""
> >
> > These are the last events of syslog before it's starts to reboot.
> >
> > Now, after what i've read the way to deal with this issue without loss
of data is to shrink the volume with aprox. 120gb (there is enough free
space) and then exclude the defective drive from the logical volume and its
physical groups, and then add a healthy disk for so to increase the volume
back to its original size.
> >
> > However LVM resize tools will not allow resizing of a volume that has a
filsystem marked with errors. And if i try to force the resize the server
hangs. I have tryed to resize with both "e2fsadm" and "resize2fs" but they
both have problem resizing since it has errors.
> >
> > So this kinda puts me back to basics, is there a way for me to remove
this disk without loosing data on the volume ?
> >
> > All awnsers are very much apriciated! :)
> >
> > Best Regards
> > Reidar
> *** 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
>                                                   56242 Marienrachdorf
>                                                   Germany
> Mauelshagen Sistina com                           +49 2626 141200
>                                                        FAX 924446
> _______________________________________________
> linux-lvm mailing list
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> http://lists.sistina.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/

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