RE: dump(8) race conditions?

2002-02-08 Thread Julian Elischer
On Fri, 8 Feb 2002, Duane H. Hesser wrote: > > Dump is a two pass system, and any activity which modifies inodes > between the first pass and the second is likely to cause problems, > either for dump or for restore. It has always been thus, even as > far back as V7 (and probably v6). This i

RE: dump(8) race conditions?

2002-02-08 Thread Duane H. Hesser
On 07-Feb-02 Markus Stumpf wrote: > We use amanda and dump for backups. Some hosts have rather busy disks > even during non prime time hours when backup is run. > > From time to time amanda reports dump(8) errors like the following: > > sendbackup: info end >| DUMP: Date of this level 5 dump:

Re: dump(8) race conditions?

2002-02-07 Thread Markus Stumpf
On Thu, Feb 07, 2002 at 11:54:02AM -0600, Dan Nelson wrote: > Dump should ideally be run on an unmounted filesystem. The next best > is to create a snapshot ( /usr/src/sys/ufs/ffs/README.snapshot ) and > dump that. True. But on systems that host e.g. mailservers or webservers its unacceptable to

Re: dump(8) race conditions?

2002-02-07 Thread Dan Nelson
In the last episode (Feb 07), Markus Stumpf said: > We use amanda and dump for backups. Some hosts have rather busy disks > even during non prime time hours when backup is run. > > >From time to time amanda reports dump(8) errors like the following: > > ? DUMP: read error from /dev/rda4s1e: In

dump(8) race conditions?

2002-02-07 Thread Markus Stumpf
We use amanda and dump for backups. Some hosts have rather busy disks even during non prime time hours when backup is run. >From time to time amanda reports dump(8) errors like the following: sendbackup: info end | DUMP: Date of this level 5 dump: Wed Feb 6 01:53:12 2002 | DUMP: Date of las