Need to take this back. It has nothing to do with the cam_socket. It gets "stuck" at varying places... as IO slows to a complete halt (based on iftop) until rsync timesout. Similarly, 'strace' stalls.
This happens even if I run rsync_bpc from the command line directly, but it does *not* happen when I use native rsync with the comparable options. Any ideas on how to debug this further? "" wrote at about 15:02:17 -0500 on Friday, January 21, 2022: > Based on the log file generated by the (equivalent) "naked" rsync > backup > > log: recv cS+++++++++ rwxrwx--- 1006, 1006 0 cam_socket0 > log: recv cS+++++++++ rwxrwx--- 1006, 1006 0 cam_socket1 > log: recv >f+++++++++ rwx------ 1000, 1000 8 > hidden_volume.txt > > it seems like it gets stuck somewhere between backing up > 'cam_socket1' and 'hidden_volume.txt' since the last BackupPC log line > I see is: > recv cS+++++++++ rwxrwx--- 1006, 1006 0 cam_socket1 > > If the problem is backing up a 'socket', the problem is not in native > rsync as it proceeds fine but rather presumably in rsync_bpc. > > > "" wrote at about 13:41:35 -0500 on Friday, January 21, 2022: > > I have long been able to back up my (rooted) Android phones using > > ssh/rsync. > > I also have no problem backing up my Windows and Linux machines. > > > > However, BackupPC timesout when I try to back up an old Samsung S3 (which > > used to back up perfectly before). The timeout occurs no matter what > > value I use even though the total backup size is only about 5.2 GB. > > > > The corresponding rsync_bpc client command is: > > /usr/bin/rsync_bpc --bpc-top-dir /var/lib/backuppc --bpc-host-name > droidtestmachine --bpc-share-name /data --bpc-bkup-num 0 --bpc-bkup-comp 3 > --bpc-bkup-prevnum -1 --bpc-bkup-prevcomp -1 --bpc-bkup-inode0 6621 > --bpc-log-level 1 --bpc-attrib-new -e /usr/bin/ssh -p 22 -l u0_a500 > --rsync-path=PATH=su\ -lpc\ /data/mybin/rsync --super --recursive > --protect-args --numeric-ids --perms --owner --group -D --times --links > --hard-links --delete --delete-excluded --one-file-system --partial > --log-format=log: %o %i %B %8U,%8G %9l %f%L --stats --checksum > --timeout=72000 --exclude=media/0/Download/Temp/* droidy:/data/ / > > > > And the corresponding rsync (remote) server command on the android host > is: > > 20298 10500 0:00 su -lpc /data/mybin/rsync --server --sender > -slHogDtprcxe.iLsfxC > > 20373 0 0:52 /data/mybin/rsync --server --sender > -slHogDtprcxe.iLsfxC > > > > Interestingly, I can successfully manually run the same rsync > > command directly by invoking rsync with the above parameters and the > > rsync completes successfully in just a couple of hours (far less than the > > timeout). > > > > The corresponding rsync client command is: > > sudo rsync -e /usr/bin/ssh\ -p\ 22\ -l\ u0_a500 --rsync-path=su\ > -lpc\ /data/mybin/rsync --super --recursive --protect-args --numeric-ids > --perms --owner --group -D --times --links --hard-links --delete > --delete-excluded --one-file-system --partial --log-format=log:\ %o\ %i\ %B\ > %8U,%8G\ %9l\ %f%L --stats --checksum --timeout=72000 > --exclude=media/0/Download/Temp/\* droidy:/data/ /tmp/droid-backup > > > > And the corresponding rsync server command on the (remote) android > > host is exactly as above. > > > > Since 'manual' rsync works, the problem is presumably *NOT* > > - The android phone > > - The setup of ssh and rsync on the phone > > - The files on the phone > > - The connection between the phone and the Linux machine invoking > > rsync or rsync_bpc > > > > Also, since my BackupPC server otherwise works fine, there is > > presumably nothing fundamentally wrong with my BackupPC installation. > > > > Finally, since at least some files are transferred (according to the > > BackupPC logs) before the timeout, there is no problem with the ssh > > keys for the android connection. > > > > > > So, why would rsync_bpc timeout but not when I run straight rsync? > > i.e., what is rsync_bpc doing differently that would cause a hang? > > > > > > _______________________________________________ > > BackupPC-users mailing list > > BackupPC-users@lists.sourceforge.net > > List: https://lists.sourceforge.net/lists/listinfo/backuppc-users > > Wiki: https://github.com/backuppc/backuppc/wiki > > Project: https://backuppc.github.io/backuppc/ > > > _______________________________________________ > BackupPC-users mailing list > BackupPC-users@lists.sourceforge.net > List: https://lists.sourceforge.net/lists/listinfo/backuppc-users > Wiki: https://github.com/backuppc/backuppc/wiki > Project: https://backuppc.github.io/backuppc/ _______________________________________________ BackupPC-users mailing list BackupPC-users@lists.sourceforge.net List: https://lists.sourceforge.net/lists/listinfo/backuppc-users Wiki: https://github.com/backuppc/backuppc/wiki Project: https://backuppc.github.io/backuppc/
