2

This is a corollary question to How to verify that rsync copied the device correctly when copy-devices is enabled?

When reattempting a transfer (using the --copy-devices) flag and two levels of verbosity -vv, I got this output:

sudo rsync -vvz --partial --progress --copy-devices /dev/sdb me@otherserver:/backupdisks/mydisk.img
delta-transmission enabled
sdb
320,071,851,520 100%   63.47MB/s    1:20:09 (xfr#1, to-chk=0/1)
total: matches=2441955  hash_hits=2441955  false_alarms=204015955 data=0

sent 188 bytes  received 21,979,001 bytes  2,837.31 bytes/sec
total size is 0  speedup is 0.00

What do the "matches", "hash_hits", and "false_alarms" values mean, and does "data=0" mean?

Has the transfer been successful or not?

  • See my answer to your previous question that you link to. – meuh Oct 26 '16 at 14:36
0

As per https://lists.samba.org/archive/rsync/2004-November/011057.html

false_alarms just tells you how many blocks had a matching weak checksum that did not match when the strong checksum was compared.

rsync only mentions this stat if debugging levels of verbosity are set

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.