topic Re: fbackup in Operating System - HP-UX

fbackup

Rich Drollinger — Wed, 24 May 2006 11:41:57 GMT

I have a client taking the sys admin1 class and was told that fbackup now supported backing up OnlineJFS file systems HPUX11.11. Can anyone confirm this and if so what version of fbackup supports this. Thanks.

Re: fbackup

Pete Randall — Wed, 24 May 2006 11:46:14 GMT

To my way of thinking, fbackup backs up files, not file systems - therefore the type of file system should make no difference. I've never heard of it not backing up OnlineJFS file systems!

Pete

Re: fbackup

Patrick Wallek — Wed, 24 May 2006 11:52:58 GMT

I agree with Pete. fbackup has nothing to do with the filesystem itslef. It just backups up the files and directories.

Perhaps he meant that it can back up Large Files (files larger than 2GB)? If so, then that is true and has been for a long time.

Re: fbackup

Rich Drollinger — Wed, 24 May 2006 11:57:41 GMT

File system was not the correct syntax, what I meant was an OnlineJFS Snapshot.

Re: fbackup

Patrick Wallek — Wed, 24 May 2006 12:02:00 GMT

Again, it doesn't matter. As far as I know fbackup has supported that for a while as well.

Snapshots are at a different layer than fbackup cares about. Again fbackup is backing up the files and the filesystem determines the appropriate data to send (new or original) when each block is read.

Re: fbackup

James R. Ferguson — Wed, 24 May 2006 12:09:48 GMT

Hi Rich:

In addition to what Patick has noted, you should be aware that 'fbackup' is designed to work while files are inuse. 'fbackup' attempts to insure a good copy of a file is placed on tape by comparing the timestamp of the file at the end of the copy to the timestamp of the file seen at the beginning of the transfer. If these do not match, fbackup marks the file as "bad" and retries the copy. The retry ('maxretries') default is five (5) and can be defined in the 'config' file associated with 'fbackup' See the manpages for 'fbackp(1M)' for more information.

Regards!

...JRF...

Re: fbackup

Rich Drollinger — Wed, 24 May 2006 12:25:55 GMT

So here is a link to a request to have fbackup enhanced to support snapshot files systems.

http://www1.itrc.hp.com/service/cki/docDisplay.do?docLocale=en_US&docId=200000078178246