Le jeudi 18 mars 2010 à 23:39 -0700, Sukadev Bhattiprolu a écrit : > Link lxc_checkpoint, lxc_restart with USERCR[2] > > Following set of patches, when applied to LXC 0.6.5 and built with > USERCR, enable lxc_checkpoint and lxc_restart of some simple containers. > > TODO: > - For simplicity, this patchset currently links *statically* with > USERCR. We should eventually build checkpoint.o and restart.o in > USERCR as shared objects and link lxc_checkpoint/lxc_restart with > these shared objects and liblxc.so. (This also required rebuilding > lxc-execute statically, so lxc_checkpoint can communicate with > lxc-execute to get the root-pid of container). > > - Determine if lxc_checkpoint needs a --container option (see > TODOs in src/lxc/checkpoint.c) > > - This patchset was tested using lxc-macvlan.conf. But for the VNC > server testing I ran into a problem with lxc-macvlan.conf. I > switched to 'lxc-no-netns.conf' and was able to C/R the VNC server. > I have not debugged the problem with VNC and lxc-macvlan.conf. > > - 'global_send_sigint' is still a global variable in USERCR. We need > to define a better interface to expose its functionality to callers > of app_restart(). > > - Choose better names and API for USERCR :-) > > Changelog[v2]: > (Based on feedback from Oren Laadan, Serge Hallyn, Daniel Lezcano > and Cedric Le Goater) > > - Rather than drop --directory option to lxc_checkpoint/lxc_restart > add a new option (--image). > > - Integrate lxc_checkpoint to work with USERCR > > - USERCR renamed usercr.h to "app-checkpoint.h" > > - USERCR does not create/install libcheckpoint.a and usercr.h for now. > So link directly with app-checkpoint.h, restart.o and checkpoint.o > > - USERCR renames the interfaces to app_checkpoint() and app_restart() > 'struct app_checkpoint_args' 'struct app_restart_args'. > > USAGE: > > 1. Build USERCR > > $ cd /root > > $ git-clone git://git.ncl.cs.columbia.edu/pub/git/user-cr.git user-cr > > $ git-checkout ckpt-v20 > > # Apply patches in the following set: > > # https://lists.linux-foundation.org/pipermail/containers/2010-March/023793.html > > $ cd /root/user-cr > > $ make > > This should create restart.o and checkpoint.o > > 2. Build/install lxc_checkpoint and lxc_restart > > # Do normal LXC build/install of 0.6.5. > > # Then replace 'lxc-execute', 'lxc-checkpoint', 'lxc-restart' with > # new version. i.e Apply attached patches and: > > $ cd src/lxc Your patch set is not usable as is, with requirement to apply the patch between two sequences of build, and lxc unable to be built with it. Please do a patch of automake files and related configure.ac rather than to create a Makefile2 file. > > $ USERCR=/root/user-cr \ > make -f Makefile2 lxc_checkpoint lxc_restart lxc_execute > > $ cp lxc_checkpoint lxc_restart lxc-execute /usr/local/bin > > 3. Checkpoint/restart a simple LXC container > > $ lxc-execute --name foo --rcfile lxc-no-netns.conf -- /bin/sleep 1000 > > $ lxc-freeze --name foo > > $ lxc-checkpoint --name foo --image /root/lxc-foo.ckpt > > $ lxc-unfreeze --name foo > > $ lxc-stop --name foo > > $ lxc-restart --name foo --image /root/lxc-foo.ckpt > > 4. Checkpoint/restart other LXC containers such as: > > - a file-io session (see run-fileio1 in cr-tests[1]) > > - process-tree (see run-ptree1 in cr-tests[1]) > > - A vi session inside a VNC Server using "twm". i.e > > $ cat /root/.vnc/xstartup > #!/bin/sh > > xsetroot -solid grey > vncconfig -iconic & > xterm -geometry 80x24+10+10 -ls -title "$VNCDESKTOP Desktop" & > twm & > > $ lxc-execute --name foo --rcfile lxc-no-netns.conf -- \ > /usr/bin/vncserver :1 > > $ vncviewer :1 > > # Open a vi session > > $ lxc-freeze --name foo > > etc > > [1]: cr-tests: git://git.sr71.net/~hallyn/cr_tests.git > [2]: USERCR: git://git.ncl.cs.columbia.edu/pub/git/user-cr.git > > Signed-off-by: Sukadev Bhattiprolu <sukadev@xxxxxxxxxxxxxxxxxx> > _______________________________________________ > Containers mailing list > Containers@xxxxxxxxxxxxxxxxxxxxxxxxxx > https://lists.linux-foundation.org/mailman/listinfo/containers _______________________________________________ Containers mailing list Containers@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/containers
