I can replicate this issue on Ubuntu 18.04 with kernel 4.15.0-101-generic x86_64 and rsync 3.1.2 protocol version 31.
As a workaround for rsync verbose logging with the -vvv flag, you can instead pass rsync to strace for tracing the system calls and signals made by rsnc by running "sudo strace rsync". You can still see the commands and params that are being used by rsync much like -vvv except strace does not cause it to get stuck syncing plus if you have some other sort of timeout, strace will also show that. I hope this is helpful to at least one person reading this looking for a workaround. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to rsync in Ubuntu. https://bugs.launchpad.net/bugs/1528921 Title: rsync hangs on select(5, [], [4], [], {60, 0} Status in rsync package in Ubuntu: Confirmed Bug description: In the last few months my home directory backup stopped completing. I've been able to reproduce the problem on a single subdirectory although I had to add the --debug=all flag to reproduce it on that smaller directory. Specifically, this command never completes: rsync --debug=all -avz /tmp/html2 /tmp/rsynctest/ The html2 directory is a copy of gnuradio-3.7.8.1/build/docs/doxygen/html . When I strace the command, I see this: write(1, "sender finished /tmp/html2/atsc_"..., 58sender finished /tmp/html2/atsc__interleaver_8h__incl.md5 ) = 58 write(1, "send_files(338, /tmp/html2/atsc_"..., 59send_files(338, /tmp/html2/atsc__interleaver_8h__incl.png) ) = 59 open("html2/atsc__interleaver_8h__incl.png", O_RDONLY|O_LARGEFILE) = 3 fstat64(3, {st_mode=S_IFREG|0664, st_size=264657, ...}) = 0 write(1, "html2/atsc__interleaver_8h__incl"..., 37html2/atsc__interleaver_8h__incl.png ) = 37 read(3, "\211PNG\r\n\32\n\0\0\0\rIHDR\0\0\n\253\0\0\2\233\10\6\0\0\0h\242\""..., 262144) = 262144 select(6, [5], [4], [5], {60, 0}) = 2 (in [5], out [4], left {59, 999996}) read(5, "\0\0\0\0\0\0\0\1\0\240\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\1\0\240\0\0\0"..., 95) = 95 write(4, "r\311\0\7\177\377\232\237\264\272e\300\300\240\316\264&\314\301\252*\37\256y\225g\373^\315j\370\350"..., 51574) = 51574 select(5, [], [4], [], {60, 0}) = 1 (out [4], left {59, 999997}) write(4, "\7\320\0\7\177\377\234|\7X\223Y\273\255c\27\25f\306\212\202\214#E\272\212t\1\225A\fU"..., 53259) = 53259 select(5, [], [4], [], {60, 0} The select command times out over and over. I get the same behavior when trying to back up my entire home directory but I don't need the --debug=all flag in that case. lsb_release -rd Description: Ubuntu 14.04.3 LTS Release: 14.04 apt-cache policy rsync rsync: Installed: 3.1.0-2ubuntu0.1 Candidate: 3.1.0-2ubuntu0.1 Version table: *** 3.1.0-2ubuntu0.1 0 500 http://us.archive.ubuntu.com/ubuntu/ trusty-updates/main i386 Packages 500 http://security.ubuntu.com/ubuntu/ trusty-security/main i386 Packages 100 /var/lib/dpkg/status 3.1.0-2 0 500 http://us.archive.ubuntu.com/ubuntu/ trusty/main i386 Packages ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: rsync 3.1.0-2ubuntu0.1 ProcVersionSignature: Ubuntu 3.13.0-74.118-generic 3.13.11-ckt30 Uname: Linux 3.13.0-74-generic i686 NonfreeKernelModules: nvidia ApportVersion: 2.14.1-0ubuntu3.19 Architecture: i386 CurrentDesktop: KDE Date: Wed Dec 23 09:44:17 2015 EcryptfsInUse: Yes InstallationDate: Installed on 2010-09-18 (1922 days ago) InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Beta i386 (20100901.1) SourcePackage: rsync UpgradeStatus: Upgraded to trusty on 2014-12-27 (361 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/rsync/+bug/1528921/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
