Guido, Can you paste the server and client spec files again? (it has got deleted from the pastebin) Make sure you are using unify on client side and have set transport-timeout to 10 secs. If possible try to reproduce the problem you are seeing with minimal spec file. Thanks Krishna On Sat, Apr 26, 2008 at 4:36 AM, Amar S. Tumballi <amar@xxxxxxxxxxxxx> wrote: > > > On Wed, Apr 23, 2008 at 3:47 AM, Guido Smit <guido@xxxxxxxxx> wrote: > > Krishna, > > > > I did the test. I killed glusterfsd on one server. > > All tests (ls, df, cp) worked like it should. I didn't even notice any > difference. Unplugging the cable however, blocked all operations and finally > after a few minutes > > the transport endpoint message appears. > > > > > > > > > The problem with TCP/IP is that when you unplug the cable, there is no > messages sent to application's poll() on network. Driver internally tries to > reconnect, and only after a long time. (it was around 10+minutes when we > tested) we get message saying no route to host. But when applications die on > server, or there is a shutdown, the connected nodes get a notification, > hence everything will be smooth. Hence the delay in case of network cable > unplugging. > > We came with an work around for managing this delay, that was > 'transport-timeout' option, which times out each request after certain time. > The default is '108's now. We kept it as high as this considering few > applications which use mandatory locks, (block the write till a lock gets > freed) can take easily up to 1+minutes for releasing the locks. Users have > the option to set 'transport-timeout' (In client/protocol volume). So, they > can tune it considering the I/O time of their apps. > > In our test setups, we could timeout exactly after given transport-timeout > setting, everytime. So, the issue of freezing indefinitely, we couldn't > reproduce. > > > Regards, > Amar > > > > -- > Amar Tumballi > Gluster/GlusterFS Hacker > [bulde on #gluster/irc.gnu.org] > http://www.zresearch.com - Commoditizing Super Storage!
