mounting reiserfs snaphost fails

linux-lvm Applied myciel 4 participants 11 messages Aug 29, 2002 – Oct 4, 2002

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myciel

author

2002-08-29 02:42 UTC #0 lore raw

Hi All

I can't mount reisefs snapshot:

mount: block device /dev/interia/intbackup is write-protected, mounting read-only
mount: wrong fs type, bad option, bad superblock on /dev/interia/intbackup,
or too many mounted file systems

linux kernel 2.4.19 and lvm utils version 1.05.

any hints?

thanks

rafal

Jon Bendtsen

2002-08-29 03:52 UTC #1 lore raw

Quoted 5 lines · myciel

Hi All
I can't mount reisefs snapshot:

Quoted 8 lines

mount: block device /dev/interia/intbackup is write-protected, mounting read-only
mount: wrong fs type, bad option, bad superblock on /dev/interia/intbackup,
or too many mounted file systems
linux kernel 2.4.19 and lvm utils version 1.05.
any hints?

Did you unmount before taking the snapshot ??
I found that i had to unmount before doing a snapshot. I'm using EXT3 though,
but both are journaling filesystems. I havent tried an ext2 one.

JonB

myciel

author

2002-08-29 04:57 UTC #2 lore raw

Quoted 9 lines · Jon Bendtsen

Did you unmount before taking the snapshot ??
I found that i had to unmount before doing a snapshot. I'm using EXT3 though,
but both are journaling filesystems. I havent tried an ext2 one.
JonB

You mean unmount original filesystem? but why should I need snapshots if I could unmount filesystem?

Anyway, now I've found that I can mount reiserfs snapshot if it was first snapshot created after system boot.

rafal

Heinz J . Mauelshagen

2002-08-29 06:18 UTC #3 lore raw

In reply to myciel

Did you put the VFS lock patch in?
You need that to be able to mount snapshots of *journaled* filesystems.

Quoted 24 lines · myciel

Hi All
I can't mount reisefs snapshot:
mount: block device /dev/interia/intbackup is write-protected, mounting read-only
mount: wrong fs type, bad option, bad superblock on /dev/interia/intbackup,
or too many mounted file systems
linux kernel 2.4.19 and lvm utils version 1.05.
any hints?
thanks
rafal
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Signature · 15 lines

Regards,
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
                                                  56242 Marienrachdorf
                                                  Germany
[email protected]                           +49 2626 141200
                                                       FAX 924446
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myciel

author

2002-08-29 10:59 UTC #4 lore raw

thanks, this helped ofcourse

rafal

Quoted 30 lines · Heinz J . Mauelshagen

Did you put the VFS lock patch in?
You need that to be able to mount snapshots of *journaled* filesystems.
Quoted 23 lines · myciel
Hi All
I can't mount reisefs snapshot:
mount: block device /dev/interia/intbackup is write-protected, mounting read-only
mount: wrong fs type, bad option, bad superblock on /dev/interia/intbackup,
or too many mounted file systems
linux kernel 2.4.19 and lvm utils version 1.05.
any hints?
thanks
rafal
_______________________________________________
linux-lvm mailing list
[email protected]
http://lists.sistina.com/mailman/listinfo/linux-lvm
read the LVM HOW-TO at http://www.sistina.com/lvm/Pages/howto.html

Jon Bendtsen

2002-10-04 03:09 UTC #5 lore raw

In reply to Heinz J . Mauelshagen

Quoted 3 lines · Heinz J . Mauelshagen

Did you put the VFS lock patch in?
You need that to be able to mount snapshots of *journaled* filesystems.

Where do i find that patch ?
Does 2.4.19 contain it ? does the latest kernel, if 2.4.19 isnt the latest ?

JonB

Jon Bendtsen

2002-10-04 03:46 UTC #6 lore raw

Quoted 9 lines · Jon Bendtsen

Quoted 3 lines · Heinz J . Mauelshagen
Did you put the VFS lock patch in?
You need that to be able to mount snapshots of *journaled* filesystems.
Where do i find that patch ?
Does 2.4.19 contain it ? does the latest kernel, if 2.4.19 isnt the latest ?

never mind, i did a cvs checkout, and made a patch for the linux kernel. i believe it included the VFS-LOCK.patch (did a make in the PATCHES subdir)

Do i need to update the LVM tools, or can i use default debian woody tools
and still get this effect ?

JonB

Heinz J . Mauelshagen

2002-10-04 03:58 UTC #7 lore raw

Quoted 11 lines · Jon Bendtsen

Quoted 9 lines · Jon Bendtsen
Quoted 3 lines · Heinz J . Mauelshagen
Did you put the VFS lock patch in?
You need that to be able to mount snapshots of *journaled* filesystems.
Where do i find that patch ?
Does 2.4.19 contain it ? does the latest kernel, if 2.4.19 isnt the latest ?

Quoted 7 lines

never mind, i did a cvs checkout, and made a patch for the linux kernel. i believe it included the VFS-LOCK.patch (did a make in the PATCHES subdir)
Do i need to update the LVM tools, or can i use default debian woody tools
and still get this effect ?

No, they should run fine because the VFS lock patch is just a kernel thing transparent to user space.

Quoted 10 lines

JonB
_______________________________________________
linux-lvm mailing list
[email protected]
http://lists.sistina.com/mailman/listinfo/linux-lvm
read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/

Signature · 15 lines

Regards,
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
                                                  56242 Marienrachdorf
                                                  Germany
[email protected]                           +49 2626 141200
                                                       FAX 924446
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

Xavier Montagutelli

2002-10-04 03:53 UTC #8 lore raw

In reply to Jon Bendtsen

Quoted 8 lines · Jon Bendtsen

Quoted 3 lines · Heinz J . Mauelshagen
Did you put the VFS lock patch in?
You need that to be able to mount snapshots of *journaled* filesystems.
Where do i find that patch ?
Does 2.4.19 contain it ? does the latest kernel, if 2.4.19 isnt the latest ?

You will find it under PATCHES/linux-2.4.19-VFS-lock.patch in the LVM source archive.

[ Xavier Montagutelli          `""'                                   ]
[ INSA Toulouse                0--0                                   ]
[               ---------oOOo---()---oOOo----------                   ]
[ Dpt de Math / Service Informatique  Tel: +33 5 61 55 93 38 / 67     ]
[ 135, Avenue de Rangueil             Fax: +33 5 61 55 93 20 / 60     ]
[ 31077 Toulouse Cedex 4              Mel: [email protected]  ]

Jon Bendtsen

Applied

2002-10-04 08:14 UTC #9 lore raw

Quoted 8 lines · Xavier Montagutelli

Quoted 5 lines · Jon Bendtsen
Quoted 3 lines · Heinz J . Mauelshagen
Did you put the VFS lock patch in?
You need that to be able to mount snapshots of *journaled* filesystems.

Quoted 6 lines

Quoted 3 lines
Where do i find that patch ?
Does 2.4.19 contain it ? does the latest kernel, if 2.4.19 isnt the latest ?
You will find it under PATCHES/linux-2.4.19-VFS-lock.patch in the LVM source archive.

Doing a cvs, i only found these 2 files (and others)

	linux-2.4.18+quota32-VFS-lock.patch
	linux-2.4.18-VFS-lock.patch

nothing for 2.4.19 :/ (whats the difference between those 2 files?)

I did a ./configure in the LVM dir, and a make in the PATCHES dir, and tried to
apply that patch to a 2.4.19, and a 2.4.18, stock from Linus. They applied fine
but they did not compile :/
"drivers/md/mddev.o: In function `_proc_read_global':
drivers/md/mddev.o(.text+0x6e1a): undefined reference to vg' drivers/md/mddev.o(.text+0x702e): undefined reference to lvm_memory' drivers/md/mddev.o(.text+0x71a1): undefined reference to `vg' make[1]: *** [vmlinux] Error 1
make[1]: Leaving directory `/usr/src/linux-2.4.18'
make: *** [stamp-build] Error 2"

So, right now i'm trying the same thing with only

	linux-2.4.18-VFS-lock.patch

applied.

JonB

Jon Bendtsen

2002-10-04 08:41 UTC #10 lore raw

Quoted 6 lines · Jon Bendtsen

Quoted 4 lines · Xavier Montagutelli
Quoted 1 line · Jon Bendtsen
"Heinz J . Mauelshagen" wrote:

[cut]

Quoted 20 lines

Doing a cvs, i only found these 2 files (and others)
        linux-2.4.18+quota32-VFS-lock.patch
        linux-2.4.18-VFS-lock.patch
nothing for 2.4.19 :/ (whats the difference between those 2 files?)
I did a ./configure in the LVM dir, and a make in the PATCHES dir, and tried to
apply that patch to a 2.4.19, and a 2.4.18, stock from Linus. They applied fine
but they did not compile :/
"drivers/md/mddev.o: In function `_proc_read_global':
drivers/md/mddev.o(.text+0x6e1a): undefined reference to vg' drivers/md/mddev.o(.text+0x702e): undefined reference to lvm_memory' drivers/md/mddev.o(.text+0x71a1): undefined reference to `vg' make[1]: *** [vmlinux] Error 1
make[1]: Leaving directory `/usr/src/linux-2.4.18'
make: *** [stamp-build] Error 2"

Quoted 3 lines

So, right now i'm trying the same thing with only
        linux-2.4.18-VFS-lock.patch
applied.

Okay, that "worked". It compiled, but i dont know if it can take online snapshots of journaled filesystems (ext3). I'll try that.

JonB