DragonFly users List (threaded) for 2009-07
Re: dragonfly- UFS + HAMMER + mirroring setup designed instead of RAID - Is this OK?
On Tue, Jul 21, 2009 at 10:19 PM, Matthew
> lockf gets an exclusive lock on the specified lock file and runs
> the specified program while holding the lock. So if you run lockf
> wieth the same lock file 50 times in parallel, the programs you run
> via that lockf are run sequentially, one at a time, and not in parallel.
Thanks a million Matt for the detailed reply.
So I created 3 files in /root/adm
2) # cat /root/adm/hms
hammer mirror-stream /Backup1/Data /Backup2/Data
3) # cat /root/adm/hmc
hammer synctid /Backup1/Data
hammer mirror-copy /Backup1/Data /Backup2/Data
and in /etc/rc.local I put this entry.
(cd /root/adm; /usr/bin/lockf -k -t 0 .lockfile ./hms) &
Then I put this entry in the crontab for root
10 1 * * * (cd /root/adm; /usr/bin/lockf -k -t 0 .lockfile ./hms) &
and I put this in the /etc/rc.shutdown
(cd /root/adm; /usr/bin/lockf -k -t 0 .lockfile ./hmc)
Will this do the trick ? :-)