topic Re: Ignore NFS mounted filesystems with dump in Operating System - Linux

Ignore NFS mounted filesystems with dump

Ragni Singh — Fri, 27 Jun 2003 12:24:39 GMT

Hi all,

I'm doing a dump of the Linux server with the following command..

dump -0u -f /dev/nst0 /

This will backup everything under root. Will this ignore NFS mounted filesystems or how can I specify to ignore NFS mounted filesystems. Any help is greatly appreciated and points will be assigned.

Re: Ignore NFS mounted filesystems with dump

Bruno Vidal — Fri, 27 Jun 2003 12:36:21 GMT

Hi,
As far I know, dump command will backup only the file system you gave, it don't cross mount point. So if you need to dump the entire system you should do multiple dump. One for each file system you want to backup.

Cheers.

Re: Ignore NFS mounted filesystems with dump

Steven E. Protter — Fri, 27 Jun 2003 13:06:12 GMT

Just wondering, how are you planning to restore this data if its a backup?

I think that command will ignore NFS mountpoints. To be sure, umount them before running the command.

This isn't a disaster recovery plan is it?

SEP

Re: Ignore NFS mounted filesystems with dump

Ragni Singh — Fri, 27 Jun 2003 13:19:25 GMT

Yes, we will be doing a restore sooner or later. For now, I just want to backup the system.

Re: Ignore NFS mounted filesystems with dump

Caesar_3 — Fri, 27 Jun 2003 13:22:49 GMT

Hello!

Dump will backup only mount point that you give
if you will have under other mounts they will
ignored.

Caesar

Re: Ignore NFS mounted filesystems with dump

Huc_1 — Sat, 28 Jun 2003 11:19:48 GMT

Hello

How about a devious way ? ... keeps your cpu busy

I use dump/restore on my linux's for backup

When I was testing my various procedures I sometime used this method...

/sbin/dump -0 -f /dev/null /

this will dump to no where but does give you some informations in return and it is fast..

It will tell you if nfs is backup or not, I do not use nfs.

I think It will be ignore if the 5 field in /etc/fstab is 0

ex: of ignored's

/dev/fd0 /mnt/floppy auto noauto,owner 0 0
none /proc proc defaults 0 0
none /dev/shm tmpfs defaults 0 0

I am prudent,I always try to test in a none production enviroment first.

I hope this will be of some help to you.

Jean-Pierre