Chris, can you get the glusterfs client logs from your ramdisk when the servers are being pulled out and tried to access the mount point? avati 2008/4/30 Christopher Hawkins <chawkins@xxxxxxxxxxxxxxxxxxxx>: > Without. All that is removed... > > > _____ > > From: anand.avati@xxxxxxxxx [mailto:anand.avati@xxxxxxxxx] On Behalf Of > Anand Avati > Sent: Wednesday, April 30, 2008 10:24 AM > To: Christopher Hawkins > Cc: gluster-devel@xxxxxxxxxx > Subject: Re: AFR: machine crash hangs other > mountsortransportendpoint not connected > > > Chris, > is this hang with IP failover in place or without? > > avati > > > 2008/4/30 Christopher Hawkins <chawkins@xxxxxxxxxxxxxxxxxxxx>: > > > > Gluster devs, > > I am still not able to keep the client from hanging in a diskless cluster > node. When I fail a server the client becomes unresponsive and does not > read > from the other AFR volume. I first moved the entire /lib and /bin and > /sbin > directories into the ramdisk which runs the nodes to rule out the simple > loss of an odd binary or library... An lsof | grep gluster on the client > (pre-failover test) shows: > > [root@node1 ~]# lsof |grep gluster > glusterfs 2195 root cwd DIR 0,1 0 2 / > glusterfs 2195 root rtd DIR 0,1 0 2 / > glusterfs 2195 root txt REG 0,1 55592 3863 > /bin/glusterfs > glusterfs 2195 root mem REG 0,1 341068 2392 > /lib/libfuse.so.2.7.2 > glusterfs 2195 root mem REG 0,1 118096 2505 > /lib/glusterfs/1.3.8pre6/xlator/mount/fuse.so > glusterfs 2195 root mem REG 0,1 164703 2514 > /lib/glusterfs/1.3.8pre6/xlator/protocol/client.so > glusterfs 2195 root mem REG 0,1 112168 77 > /lib/ld-2.3.4.so > glusterfs 2195 root mem REG 0,1 1529120 2483 > /lib/tls/libc-2.3.4.so > glusterfs 2195 root mem REG 0,1 16732 70 > /lib/libdl-2.3.4.so > glusterfs 2195 root mem REG 0,1 107800 2485 > /lib/tls/libpthread-2.3.4.so > glusterfs 2195 root mem REG 0,1 43645 2533 > /lib/glusterfs/1.3.8pre6/transport/tcp/client.so > glusterfs 2195 root mem REG 0,1 427763 2456 > /lib/libglusterfs.so.0.0.0 > glusterfs 2195 root mem REG 0,1 50672 2474 > /lib/tls/librt-2.3.4.so > glusterfs 2195 root mem REG 0,1 245686 2522 > /lib/glusterfs/1.3.8pre6/xlator/cluster/afr.so > glusterfs 2195 root 0u CHR 1,3 3393 > /dev/null > glusterfs 2195 root 1u CHR 1,3 3393 > /dev/null > glusterfs 2195 root 2u CHR 1,3 3393 > /dev/null > glusterfs 2195 root 3w REG 0,1 102 4495 > /var/log/glusterfs/glusterfs.log > glusterfs 2195 root 4u CHR 10,229 3494 > /dev/fuse > glusterfs 2195 root 5r 0000 0,8 0 4498 > eventpoll > glusterfs 2195 root 6u IPv4 4499 TCP > 192.168.20.155:1023->master1:6996 (ESTABLISHED) > glusterfs 2195 root 7u IPv4 4500 TCP > 192.168.20.155:1022->master2:6996 (ESTABLISHED) > > Everything listed here is a local file and the gluster binary has access > to > them during failover. Can you help me troubleshoot by explaining what > exactly gluster is doing when it loses a connection? Does it depend on > something I have missed? This failover test uses the same config files and > binaries that my earlier tests use (which succeeded, but were not run on a > diskless node). There must be something else in the filesystem that > glusterfs requires to failover successfully? > > Thanks, > Chris > > > > > > > > > > > > > > > Gerry, Christopher, > > > > > > > > > > Here is what I tried to do. Two servers, one client, simple > > > > setup, afr > > > > > on the client side. I did "ls" on client mount point, it > > > > works, now I > > > > > do "ifconfig eth0 down" > > > > > on the server, next I do "ls" on client, it hangs for 10 > > > > secs (timeout > > > > > value) and fails over and starts working again without > > > any problem. > > > > > > > > > > I guess few users are facing the problem you guys are facing. > > > > > Can you give us your setup details and mention the > > exact steps to > > > > > reproduce. Also try to come up with minimal config details > > > > which can > > > > > still reproduce the problem > > > > > > > > > > Thanks! > > > > > Krishna > > > > > > > > > > On Sat, Apr 26, 2008 at 7:01 AM, Christopher Hawkins > > > > > <chawkins@xxxxxxxxxxxxxxxxxxxx> wrote: > > > > > > I am having the same issue. I'm working on a diskless > > > > node cluster > > > > > > and figured the issue was related to that since AFR > > > > seems to fail > > > > > > over nicely for everyone else... > > > > > > But it seems I am not alone, so what can I do to help > > > > troubleshoot? > > > > > > > > > > > > I have two servers exporting a brick each, and a > > > client mounting > > > > > > them both with AFR and no unify. Transport timeout > > > > settings don't > > > > > > seem to make a difference - client is just hung if I > > > > power off or > > > > > > just stop glusterfsd. There is nothing logged on the > > > server side. > > > > > > I'll use a usb thumb drive for client side logging since > > > > > any logs in > > > > > > the ramdisk obviously disappear after the reboot which > > > > > fixes the hang... > > > > > > If I get any insight from this I'll report it asap. > > > > > > > > > > > > Thanks, > > > > > > Chris > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > _______________________________________________ > > > > Gluster-devel mailing list > > > > Gluster-devel@xxxxxxxxxx > > > > http://lists.nongnu.org/mailman/listinfo/gluster-devel > > > > > > > > > > > > > > > > _______________________________________________ > > > Gluster-devel mailing list > > > Gluster-devel@xxxxxxxxxx > > > http://lists.nongnu.org/mailman/listinfo/gluster-devel > > > > > > > > > > > _______________________________________________ > > Gluster-devel mailing list > > Gluster-devel@xxxxxxxxxx > > http://lists.nongnu.org/mailman/listinfo/gluster-devel > > > > > > _______________________________________________ > Gluster-devel mailing list > Gluster-devel@xxxxxxxxxx > http://lists.nongnu.org/mailman/listinfo/gluster-devel > > > > > > -- > If I traveled to the end of the rainbow > As Dame Fortune did intend, > Murphy would be there to tell me > The pot's at the other end. > > _______________________________________________ > Gluster-devel mailing list > Gluster-devel@xxxxxxxxxx > http://lists.nongnu.org/mailman/listinfo/gluster-devel > -- If I traveled to the end of the rainbow As Dame Fortune did intend, Murphy would be there to tell me The pot's at the other end.
