Kevin The link-dest parameter is a single directory (the previous day's directory), the destination is today's directory.
I haven't tried deleting a backup, there's no particular need in space terms, at the current rate there's enough space for several years of daily backups. I've reverted to daily backups on a small subset of the total; the full backup now takes around 30 hours. Clearly not practical. As the small subset takes only a few minutes to complete I can't yet see if this time is incrementing too. John On 3 Jan 2019 17:06, Kevin Korb via rsync <rsync@lists.samba.org> wrote: > > It does normally take some time to analyze large trees of files. It has > to call stat() on each file to get the size and timestamp. > > However, 15 hours seems a bit excessive even though I have never tried > to do this on Windows or a NAS system. Just to be clear, is your > --link-dest parameter a single directory or are you trying to tell it to > use all of the previous backups? > > Also, have you deleted a backup yet? In my experience that takes a lot > longer than running one so if you need 15 hours to run a backup I would > expect deleting one to take about a week. > > On 1/3/19 4:23 AM, John Simpson via rsync wrote: > > > > > > I've been running rsync as a cygwin task on Windows Server 2008 for about > > two months now. I'm using the --link-dest option to do a daily 'snapshot' > > of the contents of a server containing about 10TB of data, about 13 million > > files, to a Linux based NAS server. Things started out great but I soon > > noticed that the time take to complete was slowly incrementing. It started > > at around three hours, but is now around fifteen. > > > > The command is as follows... > > > > rsync -rlptDhPR \ > > --password-file=password \ > > --Chmod=Du=rwx,Dgo=rx,Fu=rw,Fgo=r \ > > --Stats \ > > --delete \ > > --log-file=logfilename \ > > --link-dest=linkdestpath \ > > sourceDirectory \ > > rsync@192.168.1.2::destinationDirectory > > > > I'm not using the full -a option as the differences between the Windows and > > Linux ownership stuff messed things up. > > > > The first log file looked like this... > > > > 2018/10/01 23:00:14 [2164] building file list > > ...transfer file list here > > 2018/10/02 02:11:30 [2164] Number of files: 13,759,998 (reg: 12,260,176, > > dir: 1,499,821, link: 1) > > 2018/10/02 02:11:30 [2164] Number of created files: 302 (reg: 291, dir: 11) > > 2018/10/02 02:11:30 [2164] Number of regular files transferred: 310 > > 2018/10/02 02:11:30 [2164] Total file size: 10.40T bytes > > 2018/10/02 02:11:30 [2164] Total transferred file size: 664.31K bytes > > 2018/10/02 02:11:30 [2164] Literal data: 277.91K bytes > > 2018/10/02 02:11:30 [2164] Matched data: 386.40K bytes > > 2018/10/02 02:11:30 [2164] File list size: 10.42M > > 2018/10/02 02:11:30 [2164] File list generation time: 0.154 seconds > > 2018/10/02 02:11:30 [2164] File list transfer time: 0.000 seconds > > 2018/10/02 02:11:30 [2164] Total bytes sent: 235.68M > > 2018/10/02 02:11:30 [2164] Total bytes received: 7.51M > > 2018/10/02 02:11:30 [2164] sent 235.68M bytes received 7.51M bytes 21.17K > > bytes/sec > > 2018/10/02 02:11:30 [2164] total size is 10.40T speedup is 42,753.79 > > > > the most recent looks like this... > > > > 2018/11/24 23:00:15 [2924] building file list > > 2018/11/24 23:00:17 [2924] cd..t...... /cygdrive/ > > 2018/11/25 13:21:16 [2924] Number of files: 13,776,423 (reg: 12,274,642, > > dir: 1,501,780, link: 1) > > 2018/11/25 13:21:16 [2924] Number of created files: 0 > > 2018/11/25 13:21:16 [2924] Number of regular files transferred: 0 > > 2018/11/25 13:21:16 [2924] Total file size: 10.49T bytes > > 2018/11/25 13:21:16 [2924] Total transferred file size: 0 bytes > > 2018/11/25 13:21:16 [2924] Literal data: 0 bytes > > 2018/11/25 13:21:16 [2924] Matched data: 0 bytes > > 2018/11/25 13:21:16 [2924] File list size: 10.35M > > 2018/11/25 13:21:16 [2924] File list generation time: 0.316 seconds > > 2018/11/25 13:21:16 [2924] File list transfer time: 0.000 seconds > > 2018/11/25 13:21:16 [2924] Total bytes sent: 236.55M > > 2018/11/25 13:21:16 [2924] Total bytes received: 7.51M > > 2018/11/25 13:21:16 [2924] sent 236.55M bytes received 7.51M bytes 4.72K > > bytes/sec > > 2018/11/25 13:21:16 [2924] total size is 10.49T speedup is 42,996.96 > > > > As you can see the start time is 11:00PM (23:00) in both cases. The first > > log shows that identifying the files to transfer took about three hours > > (I've omitted the file list - it's quite long), the second log takes > > fourteen hours to do the same job (in this case this was done at the > > weekend and I've include the whole log file which correctly identifies that > > no files have changed) > > > > The number of files is as might be expected as is everything else. It's > > just the time taken "building file list" is significantly larger. > > > > > > -- > ~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._., > Kevin Korb Phone: (407) 252-6853 > Systems Administrator Internet: > FutureQuest, Inc. ke...@futurequest.net (work) > Orlando, Florida k...@sanitarium.net (personal) > Web page: https://sanitarium.net/ > PGP public key available on web site. > ~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._.,-*~'`^`'~*-,._., > > -- > Please use reply-all for most replies to avoid omitting the mailing list. > To unsubscribe or change options: > https://lists.samba.org/mailman/listinfo/rsync > Before posting, read: http://www.catb.org/~esr/faqs/smart-questions.html -- Please use reply-all for most replies to avoid omitting the mailing list. To unsubscribe or change options: https://lists.samba.org/mailman/listinfo/rsync Before posting, read: http://www.catb.org/~esr/faqs/smart-questions.html
