I had a 2.7TB pool for 38 hosts, actual size after deduplication and compression.
I just upgraded to 4.0.1 and did a V3 to V4 pool migration. The storage penalty was pretty small, about 2% or 52GB. The inode overhead was substantial, just over a factor of 2. In my case it was 25348763 inodes (around 11% of the ext4 default) to 51809068 (around 22% of the default). If you are upgrading you might want to ensure that your V3 inode usage is less than 50% of what the filesystem is capable of. The above migration tool 52 hours or so on a RAID 5 of 4 disks on a server that's a few years old. To watch I graphed it over time: http://broadley.org/bill/backuppc.png ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ BackupPC-devel mailing list BackupPC-devel@lists.sourceforge.net List: https://lists.sourceforge.net/lists/listinfo/backuppc-devel Wiki: http://backuppc.wiki.sourceforge.net Project: http://backuppc.sourceforge.net/
