Raw restore and vxfs version

[Ninad_1]

Hi Gurus,

I desperately need your help.
We have restored raw filesystem backup from HP-UX 11.11 to HP-UX 11.00 ( its a vxfs filesystem ) and when I try to mount the filesystem on the HP 11.00 server it gives following error
#mount -F vxfs /dev/vg_migr_01/lvol_db051 /mnt
mount - unrecognized vxfs version number

Please suggest me a method to bring up the filesystem

Bundles of thanks,
Nad

[Alex Lavrov.]

Raw filesystem?

"raw" and "filesystem" cannot be used together. Filesystem is a known standard structure of files and raw device is just space on the disk ...

You cannot mount raw device as filesystem, that's why it does not work.

Look here:


http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=664557

[renarios]

Hi Nad,

Please check this thread: http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=544830

Cheerio,

Renarios

[Stephen Keane]

Run the following command (don't forget the -m flag !!)

# mkfs -F vxfs -m /dev/vg_migr_01/lvol_db051

It will tell you whether there is actually a filesystem on your device, without changing it.

If that fails, you haven't got a filesystem on the device.

[Ninad_1]

Hi,

I will clarify few things.
There are some vxfs filesystems on my HP 11.11 server which are backed up as raw filesystems , I got these restored on HP 11.00 and when I try to mount these filesystems it gives the error as mentioned
mount - unrecognized vxfs version number.

I tried the same with test filesystem on HP11.00 to HP11.00 - it works - I need not create a filesystem on the target if I get the raw filesystem restored.

Hope I am clear - even though the situation is a bit complication as it is non standard.
Please let me know if anyone requires any more details.

Regs,
Nad

[Stephen Keane]

# mkfs -F vxfs -m /dev/vg_migr_01/lvol_db051

Doesn't create a filesystem it tells you how a filesystem was created. You could also fsck the filesystem, either command should be run without mounting the filesystem. If either command fails, you won't be able to mount the filesystem.

[Alzhy]

Ninad,

So you backed up RAW (meaning you used vxdump) to some media or stream and you restored via vxrestore. I would have thought vxrestore on your 11.0 system woul dhave alredy flagged this during your vxrestore so I am exploring the possibility that you possibly used dd or some other backup tool that dows raw device backup (i.e. /dev/vgxx/rora01).

Let me ask you, what version of JFS (or Oline JFS) are you running on your 11.11 boxen? If it is less than 3.0 - then you cannot mount a VxFS version 4.0 layout on that release. You will need to upgrade VxFS (JFS to at least a 3.0 or 3.3).

I bet that your 11.11 filesystem layout is at 4.0. You can find out by doing a fstyp -v dev/vgxx/lvolxx.

[Ninad_1]

Thanks everyone for your responses. I guess as mentioned I need to upgrade JFS on HP 11.00 , but unfortunately that option is not possible. We are trying to sort out this problem using DBA tasks like export import the schema - basically all this restore was done for a database whose backup was taken as raw filesystem backup from the production server.
Anyways Thanks alot for your responses and more importantly your instant replies.

Regs,
Nad