https://bugzilla.samba.org/show_bug.cgi?id=15163
Bug ID: 15163
Summary: rsync timeout non-effective
Product: rsync
Version: 3.2.0
Hardware: All
OS: All
Status: NEW
Severity: normal
Priority: P5
Component: core
Assignee: [email protected]
Reporter: [email protected]
QA Contact: [email protected]
Target Milestone: ---
there seem to be circumstances, where timeout param is not effective
if i do
/root/rsync/rsync-3.2.5/rsync -avi --timeout=10 --exclude='/proc'
--exclude='/dev/' [email protected]:/ /zfspool/backup/172.20.37.189/
it hangs forever , as soon as rsync tries to traverse some suspended/hanging
/iscsipool on the remote machine (as this results in locked process as it's in
non-interruptible syscall)
if i do
/root/rsync/rsync-3.2.5/rsync -avi --timeout=10 --exclude='/proc'
--exclude='/dev/' [email protected]:/iscsipool /zfspool/backup/172.20.37.189/
i.e. if i try to rsync the "hung/stalled" directory directly, i'm getting
proper timeout behaviour:
receiving incremental file list
[Receiver] io timeout after 10 seconds -- exiting
rsync error: timeout in data send/receive (code 30) at io.c(197)
[Receiver=3.2.5]
<proper exit and return to shell>
so, apparently there seem to be circumstances where the timeout detection is
not effective
i tried to have a look with strace but don't get a clue what's the problem, as
in both cases rsync gets stuck in /iscsipool
if i run rsync locally on the machine containing the hung/stalled dir, it
behaves like this:
# rsync -av --timeout=1 --dry-run /iscsipool /tmp
sending incremental file list
[Receiver] io timeout after 1 seconds -- exiting
rsync error: timeout in data send/receive (code 30) at io.c(197)
[Receiver=3.2.3]
<here it hangs forever, never returns to shell , cannot even ^C or ^Z>
i have seen rsync hang in my scripted backup solution on other situations, e.g.
stale nfs mount etc and since i have a repro-case now, i decided to open a
bugticket for it
also see https://www.mail-archive.com/[email protected]/msg33555.html
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