Hi, I just wanted to share my experience as I wanted to place my /var/lib/BackupPC on a new device.
Before it was placed on a drbd device (RAID1 through network). It worked pretty fine, no issues at all. The secondary node was located in a different building but it was a old server which consumed a lot of power. So I was looking for a solution with less power consumption. Additionally I had around 500GB free space on the device so I wanted to shrink it to save disk space. My idea was to buy a NAS device which offers iSCSI LUNs to my backuppc server would see this LUN as local device and use it as second disk in a RAID1 (mdadm). as I had to move the data away from drbd device I planned to copy them file by file. Knowing it would take a while as my pool is about 1.4GB in (compressed) size! Anyways. I transferred the pool/ directory with rsync and then used the BackupPC_tarPCCopy to create the hard links. This took AGES! All together around 12days! Unfortunately the NAS device I got (Netgear ReadyNAS 104) didn't work well with Linux (CentOS6) iSCSI implementation....so I had to re-think. Now it uses a image file on NFS with loop device. I don't care about performance... I didn't want my BackupPC to be down for another week so I decided to do an image copy. The issue was with the reduced device- so I had to shrink the filesystem first. And to fsck the filesystem first. And then dd the device...I though this would take ages. In the end the fsck and den resize2fs took only 3 hours all together. And the dd seems to be done within 36hrs. So if anyone is planning to change his /var/lib/BackupPC to another device- do not use rsync, BackupPC_tarPCCopy or file based utilities. You'll be waiting AGES! fsck, resize2fs and dd works like a charm and ways faster! So now I have my BackupPC server running on a SW-RAID1 (mdadm) which uses a image located remotely. Just wanted to share if anyone is interested. Greetings Christian ------------------------------------------------------------------------------ Shape the Mobile Experience: Free Subscription Software experts and developers: Be at the forefront of tech innovation. Intel(R) Software Adrenaline delivers strategic insight and game-changing conversations that shape the rapidly evolving mobile landscape. Sign up now. http://pubads.g.doubleclick.net/gampad/clk?id=63431311&iu=/4140/ostg.clktrk _______________________________________________ BackupPC-users mailing list BackupPC-users@lists.sourceforge.net List: https://lists.sourceforge.net/lists/listinfo/backuppc-users Wiki: http://backuppc.wiki.sourceforge.net Project: http://backuppc.sourceforge.net/
