-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 El 2014-07-23 a las 21:47 -0700, Linda Walsh escribió:
On might ask why rsync is so slow -- copying 800G from 1 partition to another via xfsdump/restore takes a bit under 2 hours, or about 170MB/s, but with rsync, on the same partition with rsync transfering less than 1/1000th as much (700MB), it took ~70-80 minutes... or about 163kB/s.
That's because xfsdump/restore takes shortcuts that rsync can not do. The former doesn't really do a file by file copy. Instead it works with the filesystem metadata directly. It does not need to: find file name, find location of files (sectors), do the actual file read; repeat for every file and directory. And it can only work with both target and destination being XFS. - -- Cheers Carlos E. R. (from 13.1 x86_64 "Bottle" (Minas Tirith)) -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) iF4EAREIAAYFAlPRUM4ACgkQja8UbcUWM1wQhwEAh3pEwO9JsLLzhP33V3dqHx4J XE9E4bJr8dN64vPHUAgA/2DV4PCuyLhKgM/wmSomK/fAxdZwQGzwZwe9GZHvhe65 =Fa3s -----END PGP SIGNATURE-----