On 2013/11/27 0:19, Marian Marinov wrote: > > On my test setup it works for processes like apache, dovecot and mysql. > > However it does not work with containers: > > root@s321:~# criu dump -D deb1 -t 19332 --file-locks > (00.004962) Error (namespaces.c:155): Can't dump nested pid namespace for > 28352 > (00.004985) Error (namespaces.c:321): Can't make pidns id > (00.005327) Error (cr-dump.c:1811): Dumping FAILED. > root@s321:~# > When I try to dump the init process(which I believe I should not do), here is > what I see: > http://pastebin.com/DFC0ADpp > > (00.291294) Error (tty.c:222): tty: Unexpected format on path /dev/tty1 > (00.291315) Error (cr-dump.c:1491): Dump files (pid: 29702) failed with -1 > (00.291892) Error (cr-dump.c:1811): Dumping FAILED. > > This is my setup: > 19332 ? Ss 0:00 lxc-start -n deb1 -d > 28352 ? Ss 0:00 \_ init [3] > 28393 ? Ss 0:00 \_ /usr/sbin/apache2 -k start > 28419 ? S 0:00 | \_ /usr/sbin/apache2 -k start > 28422 ? Sl 0:00 | \_ /usr/sbin/apache2 -k start > 28423 ? Sl 0:00 | \_ /usr/sbin/apache2 -k start > 28489 ? S 0:00 \_ /bin/sh /usr/bin/mysqld_safe > 28620 ? Sl 0:00 | \_ /usr/sbin/mysqld --basedir=/usr > --datadir=/var/lib/mysql --user=mysql > --pid-file=/var/run/mysqld/mysqld.pid --socket=/var/run/mysqld/mysqld.sock > --port > 28621 ? S 0:00 | \_ logger -t mysqld -p daemon.error > 28598 ? Ss 0:00 \_ /usr/sbin/sshd > 29702 pts/0 Ss+ 0:00 \_ /sbin/getty 38400 tty1 linux > > I rebooted the container without getty on tty1 and then I got this: > > (00.260757) Error (mount.c:255): 86:/dev/tty4 doesn't have a proper root mount > (00.261007) Error (namespaces.c:445): Namespaces dumping finished with error > 65280 > (00.261454) Error (cr-dump.c:1811): Dumping FAILED. > > This ithe relevant container config > ## Device config > lxc.cgroup.devices.deny = a > # /dev/null and zero > lxc.cgroup.devices.allow = c 1:3 rwm > lxc.cgroup.devices.allow = c 1:5 rwm > # consoles > lxc.cgroup.devices.allow = c 5:1 rwm > lxc.cgroup.devices.allow = c 5:0 rwm > lxc.cgroup.devices.allow = c 4:0 rwm > lxc.cgroup.devices.allow = c 4:1 rwm > # /dev/{,u}random > lxc.cgroup.devices.allow = c 1:9 rwm > lxc.cgroup.devices.allow = c 1:8 rwm > lxc.cgroup.devices.allow = c 136:* rwm > lxc.cgroup.devices.allow = c 5:2 rwm > # rtc > lxc.cgroup.devices.allow = c 254:0 rm > > # mounts point > lxc.mount.entry = devpts dev/pts devpts gid=5,mode=620 0 0 > lxc.mount.auto = proc:mixed sys:ro > > > Am I doing something wrong?
According to the criu TODO list: http://criu.org/Todo cgroups in container is not supported yet, so I doubt it would work for normal containers. I'm interested in this too, so let's cc CRIU list and find out what is wrong :) > > Marian > ------------------------------------------------------------------------------ Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, & PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349351&iu=/4140/ostg.clktrk _______________________________________________ Lxc-devel mailing list Lxc-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/lxc-devel
