On Tuesday 18 January 2005 09:18 am, Jack Malone wrote:
I'm trying out the personal version of bru for backinging up some samab shares here. Just wondering who is using it out there an if you did any speed tweaks to increase the speed of backups. I did a test backup this morning of about 1 gig of data an it took 30 minutes to complete it. Based on that time frame the 11 gigs I have in the samba share would take up to 5 hours or so to finish. I did a test with the buffersize at 64k an 128k an it was same amount of time to do the backup in my testing. thanks for any help with this. I'm using a quantum DLT vS80 tape drive.
thanks
jack
Ours seems to consistantly get in excess of 3558 Kb per second according to the bruexec log: wrote 4144128 blocks (8,288,256 KBytes) on volume [1], 0:31:00, 4456 Kb/sec wrote 26695008 blocks (53,390,016 KBytes) on volume [1], 4:10:04, 3558 Kb/sec wrote 1274208 blocks (2,548,416 KBytes) on volume [1], 0:11:32, 3682 Kb/sec Its getting about 16gig per minute. This is from drives in the same machine. All the data just moving from the hard drive array to the tape. (All devices SCSI). You say you were backing up samba shares, did you mean in the same machine, or from another machine (across the network)? ------------------------------------------------------------ Here is what I use a the brutab for our DLT cat brutab # # These look funny, but global parameters are defined with # "#+" (pound-plus) syntax. If you wish to comment them out, # insert anonther #. E.g. "# #+..." # #+MOUNTCMD=/bin/mountcmd.sh # #+UNMOUNTCMD=/bin/unmountcmd.sh #+OVERWRITEPROTECT=yes #+RECYCLEDAYS=7 # The first device listed will be the default device. /dev/st0 devname="PowerVault DLT Drive" \ size=0 bufsize=64k \ tape rewind autoscan /dev/nst0 devname="PowerVault DLT Drive" \ size=0 bufsize=64k \ tape norewind noautoscan \ fmtcmd="mt -f /dev/nst0 erase" \ rfmcmd="mt -f /dev/nst0 fsf" \ retencmd="mt -f /dev/nst0 reten" \ rewindcmd="mt -f /dev/nst0 rewind" \ eodcmd="mt -f /dev/nst0 eod" # Bit bucket for testing /dev/null bufsize=20k norewind noautoscan # Entry for stdin/stdout -- DO NOT PUT FIRST - bufsize=20k norewind noautoscan -- _____________________________________ John Andersen