Date: Sun, 22 Nov 2009 02:26:46 +0100 From: Bernt Hansson <bernt@bah.homeip.net> To: George Davidovich <freebsd@optimis.net> Cc: freebsd-questions@freebsd.org Subject: Re: Dump Message-ID: <4B089356.5000807@bah.homeip.net> In-Reply-To: <20091121161415.GA68037@marvin.optimis.net> References: <4B0562A4.5050405@bah.homeip.net> <4B056636.6050309@infracaninophile.co.uk> <4B075AAA.80205@bah.homeip.net> <20091121161415.GA68037@marvin.optimis.net>
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George Davidovich said the following on 2009-11-21 17:14: > On Sat, Nov 21, 2009 at 04:12:42AM +0100, Bernt Hansson wrote: >> Matthew Seaman skrev: >>> Bernt Hansson wrote: >>>> I've been testing backups with dump, works well BUT >>>> -L does not work. For example >>>> >>>> dump -0 -a -u -L -f /mnt/dump.home.full /dev/ad0s2d >>> I believe that you need to tell dump the mount point of the file system in >>> order for it to create a snapshot, rather than the device file for the >>> partition. (ie. snapshotting only makes sense on a mounted read-write >>> filesystem). >>> >>> Also, if you're dumping a snapshotted FS to a local file, then bump up the >>> cachesize to improve performance a lot. Add '-C 32' to your command-line. >> Ok. I've tested this >> dump -1 -a -u -L -C 64 -h 0 -f /usr/home/bernt/disk2/dump.backup.home.2 >> /usr/home >> dump -1 -a -u -L -C 64 -h 0 -f /usr/home/bernt/disk2/dump.backup.home.2 >> /usr/home >> >> The error is >> mksnap_ffs: Cannot create /usr/home/.snap/dump_snapshot: Invalid argument >> dump: Cannot create /usr/home/.snap/dump_snapshot: No such file or directory > > Aargh. Must have missed the above when I last replied. That error > message indicates you're running dump without proper privileges. > > Run dump as root, or add yourself to the operator group: I did run it as root and got this error message: mksnap_ffs: Cannot create /usr/home/.snap/dump_snapshot: Invalid argument dump: Cannot create /usr/home/.snap/dump_snapshot: No such file or director
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