[linux-lvm] RE: stock kernel 2.4.20 + LVM 1.0.7 + ext3fs => snapshot problem?
Heinz J . Mauelshagen
mauelshagen at sistina.com
Fri May 16 06:03:02 UTC 2003
On Thu, May 15, 2003 at 01:27:13PM +0100, C R Ritson wrote:
> The solution appears to be to apply the patches in the other order. To
> create a kernel capable of making a snapshot of an active ext3 or
> reiserfs volume, the drill appears to be to apply the VFS-lock patch for
> the appropriate kernel version to the un-patched kernel tree, and only
> THEN to apply the generated LVM patch.
> This makes me wonder if it would be possible to add this to the
> configure script, so that I could say
> configure --with-VFS-lock
Certainly doable but people still need to be told to set that option.
We tried to have the VFS lock patch added to vanilla a couple of times but
failed so far. Retrying...
Heinz -- The LVM Guy --
> I envisage makeing --with-ext3 and --with-reiserfs aliases for the
> above. Just an idea.
> > -----Original Message-----
> > From: C R Ritson
> > Sent: 09 May 2003 16:51
> > To: 'linux-lvm at sistina.com'
> > Subject: stock kernel 2.4.20 + LVM 1.0.7 + ext3fs => snapshot problem?
> > ... cannot make a snapshot of a mounted
> > ext3 filesystem. When I attempt to mount the snapshot
> > (readonly) I get:-
> > mount: wrong fs type, bad option, bad superblock on
> > /dev/vga/addon.backup,
> > or too many mounted file systems
> > ... applying this patch
> > separately after the generated LVM patch breaks the kernel,
> > leaving me with unresolved reverences to fsync_dev_lockfs and
> > unlockfs.
> Chris Ritson (Computing Officer)
> Rm 618, Claremont Bridge, EMAIL: C.R.Ritson at newcastle.ac.uk
> School of Computing Science, PHONE: +44 191 222 8175
> University of Newcastle, FAX : +44 191 222 8232
> Newcastle on Tyne, UK NE1 7RU. http://www.cs.ncl.ac.uk/~c.r.ritson/
> linux-lvm mailing list
> linux-lvm at sistina.com
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
*** 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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