Todo
Jump to navigation
Jump to search
The printable version is no longer supported and may have rendering errors. Please update your browser bookmarks and please use the default browser print function instead.
component | task | complexity | potential/willing assignee | comments |
---|---|---|---|---|
crtools | Restore tasks into fresh new pid namespace | easy | - | A thing to worry about is this new namespace's init task. |
crtools | Rollback tree state | medium | - | |
crtools | AIO with pending events | medium | - | |
crtools | restore mountpoints | hard | - | - |
crtools | lazy migration using userfaultd | medium | xemul | - |
crtools | dump tasks from cgroup | easy | - | Currently criu dumps a subtree from given pid |
crtools | speed up logging | medium | Cyrill | Synchronous formatting and writes to log files slow things down (Logging) |
crtools | sanitize logging messages | hard | - | Currently log messages are placed w/o any logic. Need to improve that ... somehow. |
crtools | support OFD posix locks | easy | - | |
crtools | optimize kcmp calls | medium | - | For fs/fdt/vm/etc we can pre-generate ID based on objects that live on them. If pre-ID matches, then call kcmp. |
crtools | Shmem changes tracking | medium | - | |
crtools | Page transfer filters | medium | Ruslan Kuprieiev | Packing or encrypting the data would be nice. Maybe it's purely for P.Haul? |
crtools | FUSE | hard | - | |
crtools | 32-bit tasks | hard | Cyrill | |
crtools | Support one of MPI implementations | hard | Adrian Reber | worth starting with OpenMPI |
crtools | Generate task's core file out of images | medium | Ruslan Kuprieiev | CRIT |
crtools | Modify restored resources run-time | medium | - | CRIT Need (probably) some way to alter what is being restored. Usage example -- change the IP address of sockets from task above. |
crtools | TCP socket migration with changed IP | medium | - | CRIT it might make sense to migrate a tcp connection on a box with changed IP address _if_ both boxes are NAT-ed to the destination. We will then have to go to NAT box and fix the conntracks, but this might make sense. |
crtools | Applying images | hard | xemul@ w/ students | Think about ability to take images and apply them to a living task(s). E.g. -- repopulate fdtable according to data from image. Another use-case -- when doing partial migration we'll need to modify one part to switch from pipes to sockets |
crtools | Partial migration | hard | - | migrate some tasks while proxying IPC to existing others (pipes->sockets, etc.) |
crtools | Shared objects (mm/fs) support | medium | - | Now we have the kcmp syscall and can do it. The first candidate is mm sharing, as we do know, that MySQL does so sometimes. |
crtools | Smart paths resolution | hard | - | Need a way to resolve paths to overmounted files. There are two ways: 1. Move mounts, that overlap the desired path temprarily. 2. When creating a new mount pre-open an fd keeping the mountpoint. Later, do accurate path resolve and call openat() on proper mountpoint fd |
kernel/crtools | TCP repair fixes | hard | - | TCP repair TODO |
crtools | Bridges in container | medium | - | |
crtools | VLANs in containers | medium | - | |
crtools | PPP support | medium | - | |
crtools/kernel | DelayFS for NFS/Fuse migration | hard | - | |
kernel | Seamless kernel upgrade | hard | xemul | |
crtools/kernel | NFS | hard | - | Probably depends on DelayFS |
crtools | Validate .img files | easy | - | CRIT For a given set of image files check, that they are in "restorable" shape |
crtools | Restore a process tree | hard | - | Need to restore any process tree, which could be created with help PR_SET_CHILD_SUBREAPER and CLONE_PARENT. Processes can share other resources clone(2). Look at session02 |
crtools | X app | hard | - | Dump/restore of graphical applications(Maybe worth switching to Wayland?) |
crtools | Wayland app | hard | - | Dump/restore of a graphical application. Require mods from compositors(worth starting with Weston) to get\set state. Here are some talks on #wayland. |
crtools/kernel | Undo semaphores | medium | Cyrill Gorcunov | Require mods from both sides -- criu and kernel |
crtools | More detailed RPC fail codes | easy | - | Currently only 3 typical errors are reported(see include/cr-errno.h) |
kernel/criu | fsnotify queues | hard | - | Fsnotify |