[linux-lvm] 2.4.17rc2

[linux-lvm] 2.4.17rc2

[Petro]

Did a bunch of stuff get updated in the 2.4.17rc2 kernel? I ask because
I just applied that patch to 2.4.16, and at one point patch stated it
looked like a patch had already been applied. 

-- 
Share and Enjoy. 

Re: [linux-lvm] 2.4.17rc2

[GCS]

On Thu, Dec 20, 2001 at 06:25:42PM -0800, Petro <petro@auctionwatch.com> wrote:
> Did a bunch of stuff get updated in the 2.4.17rc2 kernel? I ask because
> I just applied that patch to 2.4.16, and at one point patch stated it
> looked like a patch had already been applied. 
 Sure, 2.4.17 contains a lot of little fixes over 2.4.16. I think it may be
safe to skip that part. Anyway, what file is reported to be already applied?
Cheers, GCS

[linux-lvm] error in mounitng snapshot LVs

[Abhas Abhinav]

Hi..

I've been using LVM for an year now... and have had almost no problems
with it...

Lately, i decided to start using snapshots to backup some data. I
created snapshot volumes as per the lvcreate man page and the
LVM-HOWTO on the sistina web site... however, i get stuck everytime i
try to moung the snapshot...

mount gives the following error:

-------
anubhav:~# mount /dev/data/snap_work /mnt
mount: block device /dev/data/snap_work is write-protected, mounting read-only
mount: wrong fs type, bad option, bad superblock on /dev/data/snap_work,
       or too many mounted file systems
-------

lvdisplay output is as follows:

-------
anubhav:~# lvdisplay /dev/data/snap_work
--- Logical volume ---
LV Name                /dev/data/snap_work
VG Name                data
LV Write Access        read only
LV snapshot status     active destination for /dev/data/work
LV Status              available
LV #                   5
# open                 0
LV Size                2.50 GB
Current LE             640
Allocated LE           640
snapshot chunk size    64.00 KB
Allocated to snapshot  0.00% [0/590.62 MB]
Allocated to COW-table 9.38 MB
Allocation             next free
Read ahead sectors     10000
Block device           58:8
-------

I'm attaching the output of vgdisplay -v /dev/data in a gzipped file...
so as not to clutter this email...

I am using kernel version 2.4.17 with LVM version 1.0.2. I've applied
all the kernel patches correctly. And i'm using ReiserFS as the
filesystem. The mount version that i am using is: mount-2.11n

can anyone guide me as to where i am going wrong...??

thanks,

abhas.

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Re: [linux-lvm] error in mounitng snapshot LVs

[Andreas Dilger]

On Feb 06, 2002  08:38 +0000, Abhas Abhinav wrote:
> Lately, i decided to start using snapshots to backup some data. I
> created snapshot volumes as per the lvcreate man page and the
> LVM-HOWTO on the sistina web site... however, i get stuck everytime i
> try to moung the snapshot...
> -------
> anubhav:~# mount /dev/data/snap_work /mnt
> mount: block device /dev/data/snap_work is write-protected, mounting read-only
> mount: wrong fs type, bad option, bad superblock on /dev/data/snap_work,
>        or too many mounted file systems

You need the "VFS-lock" patch, from the LVM CVS repository.

Cheers, Andreas
--
Andreas Dilger
http://sourceforge.net/projects/ext2resize/
http://www-mddsp.enel.ucalgary.ca/People/adilger/

Re: [linux-lvm] error in mounitng snapshot LVs

[Pierrick PONS]

> You need the "VFS-lock" patch, from the LVM CVS repository.
> 
> Cheers, Andreas
> --
> Andreas Dilger
> http://sourceforge.net/projects/ext2resize/
> http://www-mddsp.enel.ucalgary.ca/People/adilger/
> 
>

I'm under 2.4.17, which patch do I have to get to use snapshot ? The 
linux-2.4.11-VFS-lock.patch or linux-2.4.18-VFS-lock.patch ?

Can I use whatever file system I want for snapshots ?



Thanks


Pierrick

Re: [linux-lvm] error in mounitng snapshot LVs

[Patrick Caulfield]

On Wed, Feb 06, 2002 at 11:58:06AM +0100, Pierrick PONS wrote:
> 
> > You need the "VFS-lock" patch, from the LVM CVS repository.
> > 
> > Cheers, Andreas
> > --
> > Andreas Dilger
> > http://sourceforge.net/projects/ext2resize/
> > http://www-mddsp.enel.ucalgary.ca/People/adilger/
> > 
> >
> 
> I'm under 2.4.17, which patch do I have to get to use snapshot ? The 
> linux-2.4.11-VFS-lock.patch or linux-2.4.18-VFS-lock.patch ?
> 
> Can I use whatever file system I want for snapshots ?

Use the 2.4.11 patch for kernel 2.4.17

Without the patch only (I think) ext2 will work with snapshots, the journalling
filesystems need the VFS patch.

patrick

Re: [linux-lvm] error in mounitng snapshot LVs

[Andreas Dilger]

On Feb 06, 2002  11:58 +0100, Pierrick PONS wrote:
> Andreas wrote:
> > You need the "VFS-lock" patch, from the LVM CVS repository.
> 
> I'm under 2.4.17, which patch do I have to get to use snapshot ? The 
> linux-2.4.11-VFS-lock.patch or linux-2.4.18-VFS-lock.patch ?

Probably 2.4.11 is the right one.

> Can I use whatever file system I want for snapshots ?

Journaling filesystems need a special interface, but reiserfs, ext3, and
XFS all support this interface.  For non-journaled filesystems, it will
just sync the device, but this is not 100% guaranteed to make the fs
consistent.  Also, when you mount an ext2 filesystem it will report the
filesystem as dirty, but it will still mount, unlike ext3.

Cheers, Andreas
--
Andreas Dilger
http://sourceforge.net/projects/ext2resize/
http://www-mddsp.enel.ucalgary.ca/People/adilger/

Re: [linux-lvm] 2.4.17rc2

[Urs Thuermann]

Petro <petro@auctionwatch.com> writes:

> Did a bunch of stuff get updated in the 2.4.17rc2 kernel? I ask because
> I just applied that patch to 2.4.16, and at one point patch stated it
> looked like a patch had already been applied. 

Yes, you probably mean the patch from patch-2.4.17

    --- linux-2.4.16/drivers/md/lvm-snap.c  Mon Nov 12 17:34:20 2001
    +++ linux/drivers/md/lvm-snap.c Fri Dec 21 16:40:32 2001
    @@ -542,8 +542,6 @@
     
     void lvm_snapshot_release(lv_t * lv)
     {
    -       int     nbhs = KIO_MAX_SECTORS;
    -
    	    if (lv->lv_block_exception)
    	    {
    		    vfree(lv->lv_block_exception);

which seems already to be in LVM-1.0.1.  This patch in uncritical
anyway since it does nothing, except cosmetic cleanup (removal of
unused variable).


urs