I'm setting up a CentOS 7 box as a BackupPC 4 server to back up Windows
boxes on my LAN. I'm using an external 1.5 TB USB drive for the "pool".
BackupPC deduplicates by saving all files in a pool, a directory hiearchy
with each file named for the checksum of the file, and the directories
acting as a hash tree to reach each pool file. A backup for a specific
workstation is a directory tree of checksums and metadata that point into
the pool for the actual file data. Incremental backups are reverse deltas
from periodic "filled" backups of all files. I'm using rsyncd to pull
changed files from the workstations.
I'm deciding which filesystem to use for my external drive. I'm thinking
the main candidates are ext4 and xfs. What's the best filesystem for this
application?
<https://github.com/backuppc/backuppc>
Repo for CentOS 7 users:
<https://copr.fedorainfracloud.org/coprs/hobbes1069/BackupPC/>
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