Aw: Re: backup-dir over nfs

[devzero]

i´m sure this is no rsync issue. i guess rsync is just triggering it.

 

https://groups.google.com/forum/#!msg/fa.linux.kernel/bxYvmkgvwGo/-gbIAVLz0zAJ

 

maybe clocksource=jiffies or nohz=off  is worth a try to see if it makes a difference

 

regards

roland

 

 

 

 

you mean, when the hang appears, you get ping timeout from another host, i.e. it`s not only userspace which is being locked but the kernel also locks up completely (i.e. does not respond to ping anymore) ?

 

regards

roland

 

 

Gesendet: Freitag, 07. März 2014 um 17:21 Uhr
Von: "Philippe LeCavalier" <supp...@plecavalier.com>
An: devz...@web.de
Cc: rsync@lists.samba.org
Betreff: Re: backup-dir over nfs

Hi Roland.

 

On Thu, Mar 6, 2014 at 4:45 PM, <devz...@web.de> wrote:

I cannot really follow how your setup works, can you perhaps describe it a little bit better?

I've tried to keep it as simple as possible considering...

 

Various remote hosts(running rsync daemon)

->

HOST A(rsync pull / backup-dir=NFS host)

---->

HOST B(NFS export for backup-dir)

---->

When HOST A is done pulling the data from the various hosts a second script starts and rsync's(push) to HOST C. Every other time HOST C grabs a fresh copy directly from the remote hosts. Of course, this part is never automatically achieved since I'm never around to key "waking" the system from the console. So every time I walk by I hit a key and it keeps going.

please provide the command which works and which not.

hangs with: -avS --exclude-from=exclude.rsync --delete --backup --backup-dir=/path/to/nfs on HOST B/date +today's date

 

does not hang with: -avS --exclude-from=exclude.rsync --delete --backup --backup-dir=/path/to/local/date +today's date fs on HOST A

 

so - resuming from hang is all about keypress?

Yes. 

that sounds like an interrupt issue,i guess its no rsync problem but it`s only being triggered by rsync.

My assumption is also that it's likely not directly related to rsync. I was thinking more NFS though. 

keep an eye on /proc/interrupts.

Interesting. Hadn't thought of that. I will. 

please post the answer to the rsync list, so others can also have a look

Done. 

 

Question: I'm running this in cron as root. Although root can rw to the NFS share while I'm in the console, is it somehow possible I'm encountering a permissions issue and just not seeing a "permission denied" anywhere? 

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