Quoting Jianwei Liao (liaotoad1@xxxxxxxxx): > hi all, > I am using ckpt-v18, everything is fine. > i have read some of the code of ckpt, but i was wondering that where does > kernel module to stop the checkpointee? (something related to context?) i > hope you can point me out how to find such stuff. > Can i use SIGSTOPand SIGCONT to do such things? > Thank you very much. > Liao Userspace should do this in advance by using the freezer cgroup. So for instance if you are wanting to checkpoint /usr/bin/myapp, then one way to do it is: (terminal 1) mkdir -p /cgroup mount -t cgroup -o freezer freezer /cgroup mkdir /cgroup/myapp (terminal 2) echo $$ > /cgroup/myapp/tasks /usr/bin/myapp (terminal 1) echo FROZEN > /cgroup/myapp/freezer.state pid=`pidof myapp` checkpoint $pid > myapp.ckpt echo THAWED > /cgroup/myapp/freezer.state If the application hasn't been frozen using the freezer cgroup, then sys_checkpoint() will return -EBUSY. -serge _______________________________________________ Containers mailing list Containers@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/containers
