Hi Craig, On Tue, Oct 13, 2020 at 07:52:48PM -0700, BackupPC Users wrote: > The BackupPC 3.x store has large numbers of hardlinks. What commands are you > using to migrate the data?
rsync -a <oldmachine:dir> <dir> > You need to copy the file system in a manner that is aware of, and > reconstructs, the hardlinks (eg, rsync -aH, or a raw file system copy provided > they are compatible). Copying all the hardlinks will be slow, but will work. Ah! Excellent. I hadn't thought of that. No wonder the copy blew up. > Another reasonable option is to start over, since you can keep the old disk > around until you are comfortable you have sufficient history in the new > server. I think I want to recycle the old disk (it's only 500 GB -- I remember when a 300 MB drive was a big deal :-), probably to be paired with another used disk in RAID 1 on a non-critical machine. I'll go for the -H option. Thanks a bunch. > Craig > > On Tue, Oct 13, 2020 at 7:41 PM Bob McClure Jr <b...@bobcatos.com> wrote: > > I'm migrating my file server from CentOS 6 to CentOS 7. Besides being > our file server, it also does DHCP, caching DNS, and BackupPC. I'm having > a > problem migrating the backups to the new disk, namely running out of > space. Both systems are running BackupPC-3.3.1-5.el[67].x86_64, but > backuppc is turned off on CentOS 6 and things are not yet cut over to > the C7 machine and its BPC is off too. > > It's a very simple setup backing up a single Win10 machine over our > gigabit LAN. > > While trying to transfer the backups in /var/lib/BackupPC from the C6 > to the C7 machine, I run out of space. On C6, the file system is a > 175 GiB LV in ext4 holding about 137 GB. On C7, I started with a 200 > GiB LV in ext4 and ran out of space. Then I extended it to 300, then > 500 and still ran out of space. I ran "dumpe2fs" on both machines, > and they have the same block size and extent size. > > I focused in on one backup, /var/lib/BackupPC/pc/nate/112/. "du" on > C6 reports it to be about 36 GB. When copied over to C7, du reports > it to be 42 GB. So what is going on here? Are the files on C6 > "sparse" files, and in the transfer getting blown up to normal? Or is > something else going on? > > Should I just not copy over the old backups and let the C7 system > start over? > > Cheers, > -- > Bob McClure, Jr. > _______________________________________________ Cheers, -- Bob McClure, Jr. Bobcat Open Systems, Inc. b...@bobcatos.com https://www.bobcatos.com I am coming soon. Hold on to what you have, so that no one will take your crown. Revelation 3:11 _______________________________________________ BackupPC-users mailing list BackupPC-users@lists.sourceforge.net List: https://lists.sourceforge.net/lists/listinfo/backuppc-users Wiki: https://github.com/backuppc/backuppc/wiki Project: https://backuppc.github.io/backuppc/
