Date: Wed, 30 Mar 2005 15:23:12 +0200 From: Kees Plonsz <spam@jeremino.homeunix.net> To: freebsd-questions@freebsd.org Subject: Re: mksnap_ffs woes Message-ID: <13564092.Na7rpGxoSG@not_a_message_id> References: <list.freebsd.questions#424AACD1.3060802@netfence.it>
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Andrea Venturoli wrote on Wednesday 30 March 2005 15:42 in the group list.freebsd.questions:
> Hello.
>
> I've got some scripts like the following:
>
> /sbin/mksnap_ffs /usr /tmp/snapshot
> /sbin/mdconfig -a -t vnode -f /tmp/snapshot -u 0
> /sbin/mount -r /dev/md0 /usr/local/etc/snapmnt
> ... (backup data, transfer data, do anything)
> /sbin/umount /usr/local/etc/snapmnt
> /sbin/mdconfig -d -u 0
> /bin/rm -f /tmp/snapshot
>
>
>
> This will sometimes more or less lock my system, since every write
> access to /usr gets stuck.
>
> ps or top show mksnap_ffs running, but apparently doing nothing, and
> every attempt to kill it will fail. Not even a clean shutdown is possible.
>
The firsts line of your script contains an error:
mksnap_ffs mountpoint snapshot_name
The mksnap_ffs utility creates a snapshot named snapshot_name on the file
system mounted at mountpoint. The snapshot_name argument must be con-
tained within the file system mounted at mountpoint.
So it should be:
mksnap_ffs /usr /usr/any_path
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