On Tue, 13 Apr 2021 22:29:26 +0200
Simon Matter wrote:
> You could try running strace on the hanging process so see what it's doing.
[frankcox@mutt temp]$ rsync -avv ../temp/ jeff:temp
opening connection using: ssh jeff rsync --server -vvlogDtpre.iLsfxC . temp (7 args)
sending incremental file list
delta-transmission enabled
abc is uptodate
total: matches=0 hash_hits=0 false_alarms=0 data=0
Leaving that sit there apparently doing nothing (but still not giving me my cursor back) I switched to another terminal window and did the following:
[frankcox@mutt ~]$ ps -FA | grep rsync
frankcox 5400 2435 0 60586 3160 5 14:52 pts/0 00:00:00 rsync -avv ../temp/ jeff:temp
frankcox 5401 5400 0 67980 7440 1 14:52 pts/0 00:00:00 ssh jeff rsync --server -vvlogDtpre.iLsfxC . temp
frankcox 5526 5416 0 55476 1076 3 14:53 pts/1 00:00:00 grep --color=auto rsync
[frankcox@mutt ~]$ strace -p 5401
strace: Process 5401 attached
select(11, [5 9 10], [], NULL, NULL
Then it just sits there with no further action. I get my cursor back when I hit ctrl-c.
[frankcox@mutt ~]$ strace -p 5400
strace: Process 5400 attached
restart_syscall(<... resuming interrupted nanosleep ...>) = 0
wait4(5401, 0x7ffd45105564, WNOHANG, NULL) = 0
nanosleep({tv_sec=0, tv_nsec=20000000}, NULL) = 0
wait4(5401, 0x7ffd45105564, WNOHANG, NULL) = 0
nanosleep({tv_sec=0, tv_nsec=20000000}, NULL) = 0
wait4(5401, 0x7ffd45105564, WNOHANG, NULL) = 0
nanosleep({tv_sec=0, tv_nsec=20000000}, NULL) = 0
wait4(5401, 0x7ffd45105564, WNOHANG, NULL) = 0
nanosleep({tv_sec=0, tv_nsec=20000000}, NULL) = 0
wait4(5401, 0x7ffd45105564, WNOHANG, NULL) = 0
nanosleep({tv_sec=0, tv_nsec=20000000}, NULL) = 0
wait4(5401, 0x7ffd45105564, WNOHANG, NULL) = 0
nanosleep({tv_sec=0, tv_nsec=20000000}, NULL) = 0
wait4(5401, 0x7ffd45105564, WNOHANG, NULL) = 0
The wait4-etc line just keeps repeating endlessly until I hit ctrl-c.
Unfortunately, I have no idea what any of the above actually means. Does it tell us anything interesting?
--
MELVILLE THEATRE ~ Real D 3D Digital Cinema ~ www.melvilletheatre.com
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