Checklist crnext
From Linux Checkpoint / Restart Wiki
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{| border="1" cellspacing="0" cellpadding="8" width="100%" align="center" | {| border="1" cellspacing="0" cellpadding="8" width="100%" align="center" | ||
! '''Not Implemented''' !! '''Refuses to Checkpoint''' <br/> ''(Yes/No)'' !!width="60%"| '''Anticipated Solution Impact''' | ! '''Not Implemented''' !! '''Refuses to Checkpoint''' <br/> ''(Yes/No)'' !!width="60%"| '''Anticipated Solution Impact''' | ||
Revision as of 17:20, 21 December 2009
What is implemented
* open regular files and directories: * ext2, ext3, ext4 * /dev/null, zero, random, urandom * epoll fd's * event fd's * timer fd's * signal fd's * unix sockets * ipv4 sockets (except time-wait sockets) * SYSV IPC (message queues, semaphores, and shared memory) * except semaphore undo * Unix98 ptys * futexes * process ids * credentials (userid, group, and POSIX capabilities) * Smack LSM labels * pipes * FIFOs * signals * multiple processes, threads * nested namespaces of: * user * IPC * UTS (hostname) * IPC * (nested pid namespaces only require userspace support)
What is NOT implemented
| Not Implemented | Refuses to Checkpoint (Yes/No) |
Anticipated Solution Impact |
|---|---|---|
| mounts | Yes | |
| network devices, time-wait inet sockets | Yes | |
| unlinked files and directories | Yes | |
| inotify | Yes | Probably gross due to watches attaching to inodes |
| FUSE | Yes | Clean but requires per-FUSE-filesystem support |
| network and distributed filesystems | Yes | |
| SYSV IPC: semaphore undo | No | Small, clean |
| netlink | Yes | |
| new, expiremental, and/or infrastructure-oriented network protocols |
Yes | |
| file locks | Yes | |
| file leases | Yes | |
| fowner+sigio | Yes | |
| ptraced tasks | Yes | |
| time namespace | N/A | |
| restart of 64-bit task from 32-bit task and vice versa |
Yes | |
| inet6 sockets (previously supported, just need to add it back in. minor) |
Yes | |
| Hardware devices other than those mentioned above. Includes mmap, /dev/foo, Infiniband devices |
Yes (mostly) | |
| System-specific files in sysfs (things like UUID files) |
Yes |
