Re: NFS rename sometimes hangs for 15 seconds after upgrade to Debian 8

On 2015-10-01 19:43:03 +0200, Stephan Seitz wrote: > On Thu, Oct 01, 2015 at 01:54:07PM +0200, Vincent Lefevre wrote: > >Is there a way to get traces as a normal user? > >Otherwise I'll have to ask the sysadmin... > > Yes. If you do a „dpkg-reconfigure wireshark-common” you’ll get ask > if normal

Re: NFS rename sometimes hangs for 15 seconds after upgrade to Debian 8

On 2015-09-28 20:12:50 -0700, Mike Kupfer wrote: > I think it would be best to see packet traces from Vincent, if that's > possible. (The trace should include traffic between the server and both > clients.) I can think of a couple possible reasons why his Deb7 client > behaves better than the

Re: NFS rename sometimes hangs for 15 seconds after upgrade to Debian 8

On Thu, Oct 01, 2015 at 01:54:07PM +0200, Vincent Lefevre wrote: Is there a way to get traces as a normal user? Otherwise I'll have to ask the sysadmin... Yes. If you do a „dpkg-reconfigure wireshark-common” you’ll get ask if normal user should be allowed to trace. If you say yes then a new

Re: NFS rename sometimes hangs for 15 seconds after upgrade to Debian 8

Vincent Lefevre wrote: > Is there a way to get traces as a normal user? Not that I know of. mike

Re: NFS rename sometimes hangs for 15 seconds after upgrade to Debian 8

-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Am 28.09.2015 um 18:59 schrieb Mike Kupfer: > Peter Ludikovsky wrote: > >> The big difference happens at packets 58/54 (Deb7/Deb8). For >> Deb7, the RENAME call is immediately answered by an NFS4_OK, >> whereas for Deb8 as the client it's an

Re: NFS rename sometimes hangs for 15 seconds after upgrade to Debian 8

Peter Ludikovsky wrote: > The big difference happens at packets 58/54 (Deb7/Deb8). For Deb7, the > RENAME call is immediately answered by an NFS4_OK, whereas for Deb8 as > the client it's an NFS4ERR_DELAY. I haven't seen any reason on the > client communication that would explain that, however

Re: NFS rename sometimes hangs for 15 seconds after upgrade to Debian 8

On 2015-09-28 11:30:27 +0200, Peter Ludikovsky wrote: > Maybe attach that information to your bug report as a point for > investigation. Thanks. I have pasted the message contents and added a link to it (in the mailing-list archives). -- Vincent Lefèvre - Web:

Re: NFS rename sometimes hangs for 15 seconds after upgrade to Debian 8

-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Am 25.09.2015 um 14:04 schrieb Vincent Lefevre: > On 2015-09-25 10:11:10 +0200, Peter Ludikovsky wrote: >> My guess is: Due to the rather large wsize/rsize, the clients >> create a rather large attribute cache. As a result, when you cat >> a file on

Re: NFS rename sometimes hangs for 15 seconds after upgrade to Debian 8

Peter Ludikovsky wrote: > Am 28.09.2015 um 18:59 schrieb Mike Kupfer: > > In the deb7 trace, the other client is .4, not .3. It does not get > > a delegation when it opens file2 (see packet 39), so the server > > can process the RENAME immediately. > Hang on, the two traces haven't been made

Re: NFS rename sometimes hangs for 15 seconds after upgrade to Debian 8

On 2015-09-24 14:38:01 +0200, Peter Ludikovsky wrote: > Other than that, what mount command did you use? Are you mounting the > share yourself, or is this an fstab or autofs mount? autofs The only option used in /etc/auto.master is the obvious -o nosuid. But the options seem to be the same on

Re: NFS rename sometimes hangs for 15 seconds after upgrade to Debian 8

-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Am 25.09.2015 um 09:32 schrieb Vincent Lefevre: > On 2015-09-24 14:38:01 +0200, Peter Ludikovsky wrote: >> Other than that, what mount command did you use? Are you mounting >> the share yourself, or is this an fstab or autofs mount? > > autofs > >

Re: NFS rename sometimes hangs for 15 seconds after upgrade to Debian 8

On 2015-09-25 10:11:10 +0200, Peter Ludikovsky wrote: > My guess is: > Due to the rather large wsize/rsize, the clients create a rather large > attribute cache. As a result, when you cat a file on the second > machine it updates the atime in the cache, but doesn't yet transfer > that information

Re: NFS rename sometimes hangs for 15 seconds after upgrade to Debian 8

On 2015-09-23 17:56:30 +0200, Peter Ludikovsky wrote: > When mounted as NFS3 over UDP: > - > root@lab1# echo foo > file1 > root@lab1# cp file1 file2 > > root@lab2# cat file2 > foo > > root@lab1# time mv file1 file2 > real 0m0.004s > user 0m0.000s > sys 0m0.000s > - > > Same with

Re: NFS rename sometimes hangs for 15 seconds after upgrade to Debian 8

-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Am 24.09.2015 um 11:46 schrieb Vincent Lefevre: > On 2015-09-23 17:56:30 +0200, Peter Ludikovsky wrote: >> When mounted as NFS3 over UDP: - root@lab1# echo foo > >> file1 root@lab1# cp file1 file2 >> >> root@lab2# cat file2 foo >> >> root@lab1#

Re: NFS rename sometimes hangs for 15 seconds after upgrade to Debian 8

On 2015-09-22 15:19:10 +0200, Vincent Lefevre wrote: > At my lab, with NFS accounts, some machines have been upgraded to > Debian 8, and I get regular hangs on these machines, while they > never occurred before on the same machine and still never occur > on a machine that is still under Debian 7.

Re: NFS rename sometimes hangs for 15 seconds after upgrade to Debian 8

-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Hello, I tried to replicate your problem, but couldn't. When mounted as NFS3 over UDP: - root@lab1# echo foo > file1 root@lab1# cp file1 file2 root@lab2# cat file2 foo root@lab1# time mv file1 file2 real0m0.004s user0m0.000s sys

NFS rename sometimes hangs for 15 seconds after upgrade to Debian 8

At my lab, with NFS accounts, some machines have been upgraded to Debian 8, and I get regular hangs on these machines, while they never occurred before on the same machine and still never occur on a machine that is still under Debian 7. This happens with one of my scripts, which does a lot of