Serge E. Hallyn wrote: > Quoting Daniel Lezcano (dlezcano@xxxxxxxxxx): >> Sukadev Bhattiprolu wrote: >>> lxc-checkpoint, lxc-restart in the LXC source tree are currently stubs. >>> Following set of patches, when applied to LXC and built with USERCR as >>> described below, enable enable lxc-checkpoint and lxc-restart of some >>> simple containers >> [ ... ] >> >>> 3. Checkpoint/restart a simple LXC container >>> >>> $ lxc-execute --name foo --rcfile lxc-no-netns.conf -- /bin/sleep 1000 >>> >>> $ lxc-checkpoint --name foo --image /root/lxc-foo.ckpt >>> >>> $ lxc-stop --name foo >>> >>> $ lxc-restart --name foo --image /root/lxc-foo.ckpt >> Finally, using ckpt-v20-dev, I succeeded to checkpoint sleep but >> when I restart, I got the error: >> >> <4534>number of tasks: 2 >> <4534>number of vpids: 0 >> <4534>total tasks (including ghosts): 2 >> <4534>pid 2: inherit sid 0 >> <4534>pid 2: creator set to 1 >> <4534>====== TASKS >> <4534> [0] pid 1 ppid 0 sid 0 creator 0 >> <4534> [1] pid 2 ppid 1 sid 0 creator 1 >> <4534>............ >> <4534>task[0].vidx = -1 >> <4534>task[1].vidx = -1 >> <4534>new pidns with init >> <4534>forking child vpid 1 flags 0x321 >> <4534>task 1 forking with flags 20020011 numpids 1 >> <4534>task 1 pid[0]=0 >> <4535>====== PIDS ARRAY >> <4535>[0] pid 1 ppid 0 sid 0 pgid 0 >> <4535>[1] pid 2 ppid 1 sid 0 pgid 0 >> <4535>............ >> Error: /dev/ptmx must be a link to /dev/pts/ptmx >> <4534>forked child vpid 4536 (asked 1) >> root task exited status 0 >> >> What can I do to prevent this error ? > > test -e /dev/pts/ptmx || (echo "Don't go through with the rest of this" && exit) > rm -f /dev/ptmx > ln -s /dev/pts/ptmx /dev/ptmx > chmod 666 /dev/ptmx I was able to CR a simple program like sleep. But most of the simple test programs I run, exit right after the restart was marked successful instead of continuing their execution. In the kernel I see the traces: [26108:3:c/r:restore_debug_free:145] active pid was 3, ctx->errno 0 [26108:3:c/r:restore_debug_free:147] kflags 6 uflags 0 oflags 3 [26108:3:c/r:restore_debug_free:149] task[0] to run 1 [26108:3:c/r:restore_debug_free:149] task[1] to run 2 [26108:3:c/r:restore_debug_free:149] task[2] to run 3 [26108:3:c/r:restore_debug_free:174] pid 26104 type Coord state Success [26108:3:c/r:restore_debug_free:174] pid 26106 type Root state Success [26108:3:c/r:restore_debug_free:174] pid 26107 type Task state Success [26108:3:c/r:restore_debug_free:174] pid 26108 type Task state Success [26108:3:c/r:pgarr_release_pages:102] total pages 0 [26108:3:c/r:do_restart:1446] sys_restart returns -516 What does mean -516 ? an error ? I am running on a x86_64. Thanks -- Daniel _______________________________________________ Containers mailing list Containers@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/containers
