-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 As long as it still sees both links it is fine. Essentially, the way it works is that whenever rsync -H (on the source) sees a file with a link count >1 it remembers the inode#>filename pair. If it finds another instance of that inode it then links to the same file on the target. So, if you abort after it copies one but before it links the other it will still handle it correctly on the next run. It just won't handle it if you rsync tree #1 then rsync tree #2. It won't see a hard link that is common to both since it wasn't analyzing them together. On 01/23/2016 03:04 PM, dbonde+forum+rsync.lists.samba.org at gmail.com wrote:> On 2016-01-23 17:50, Kevin Korb wrote: >> It will, assuming it sees both links in the same rsync run. > > How does one handle interrupted transfers if one wants to preserve > hard links? Would --partial and --append-verify work? >- -- ~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._., Kevin Korb Phone: (407) 252-6853 Systems Administrator Internet: FutureQuest, Inc. Kevin at FutureQuest.net (work) Orlando, Florida kmk at sanitarium.net (personal) Web page: http://www.sanitarium.net/ PGP public key available on web site. ~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._., -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iEYEARECAAYFAlaj34gACgkQVKC1jlbQAQdDPgCfQBP/mR7x0a6JVLIJZzye+6Io 0woAn3BGe9y0mjOfZbK62R0OHuzOzChl =q3hs -----END PGP SIGNATURE-----
dbonde+forum+rsync.lists.samba.org at gmail.com
2016-Jan-23 20:44 UTC
Why is my rsync transfer slow?
On 2016-01-23 21:16, Kevin Korb wrote:
> As long as it still sees both links it is fine.
>
> Essentially, the way it works is that whenever rsync -H (on the
> source) sees a file with a link count >1 it remembers the
> inode#>filename pair. If it finds another instance of that inode it
> then links to the same file on the target. So, if you abort after it
> copies one but before it links the other it will still handle it
> correctly on the next run.
>
> It just won't handle it if you rsync tree #1 then rsync tree #2. It
> won't see a hard link that is common to both since it wasn't
analyzing
> them together.
I'm not sure I understand your answer. As you could see in my previous
message, the files that should be linked but was duplicated was located
in the same root directory ("/backups"):
/backups/2011-06-23-040258/Pictures/DSCF0748.JPG"
/backups/2010-12-18-070445/Pictures/DSCF0748.JPG"
Why is rsync losing track of the links just because the transfer was
interrupted if your explanation is correct?
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 What was your rsync source and target that made those? On 01/23/2016 03:44 PM, dbonde+forum+rsync.lists.samba.org at gmail.com wrote:> On 2016-01-23 21:16, Kevin Korb wrote: >> As long as it still sees both links it is fine. >> >> Essentially, the way it works is that whenever rsync -H (on the >> source) sees a file with a link count >1 it remembers the >> inode#>filename pair. If it finds another instance of that inode >> it then links to the same file on the target. So, if you abort >> after it copies one but before it links the other it will still >> handle it correctly on the next run. >> >> It just won't handle it if you rsync tree #1 then rsync tree #2. >> It won't see a hard link that is common to both since it wasn't >> analyzing them together. > > I'm not sure I understand your answer. As you could see in my > previous message, the files that should be linked but was > duplicated was located in the same root directory ("/backups"): > > /backups/2011-06-23-040258/Pictures/DSCF0748.JPG" > > > /backups/2010-12-18-070445/Pictures/DSCF0748.JPG" > > Why is rsync losing track of the links just because the transfer > was interrupted if your explanation is correct? >- -- ~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._., Kevin Korb Phone: (407) 252-6853 Systems Administrator Internet: FutureQuest, Inc. Kevin at FutureQuest.net (work) Orlando, Florida kmk at sanitarium.net (personal) Web page: http://www.sanitarium.net/ PGP public key available on web site. ~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._., -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iEYEARECAAYFAlaj6n4ACgkQVKC1jlbQAQcwzwCgnWFzGaLQ1/JZN/JQ/hghlE7C rkcAoO1rLGhDnUj4dIGlqvNr7sZkDjMn =236y -----END PGP SIGNATURE-----