From: Daniel Lezcano <daniel.lezcano-GANU6spQydw@public.gmane.org>
To: Dan Smith <danms-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
Cc: "Serge E. Hallyn" <serue-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>,
linux-api-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
containers-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org,
Andrew Morton
<akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>,
torvalds-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org,
mingo-X9Un+BFzKDI@public.gmane.org,
xemul-GEFAQzZX7r8dnm+yROfE0A@public.gmane.org
Subject: Re: [PATCH 00/80] Kernel based checkpoint/restart [v18]
Date: Wed, 30 Sep 2009 18:16:55 +0200 [thread overview]
Message-ID: <4AC38477.4070007@free.fr> (raw)
In-Reply-To: <87iqf0o5sf.fsf-FLMGYpZoEPULwtHQx/6qkW3U47Q5hpJU@public.gmane.org>
Dan Smith wrote:
> DL> Ok for the restart, but for the checkpoint, how do you access the
> DL> network setup from a process which belongs to another namespace
> DL> context ?
>
> So far the discussion has led to the kernel dumping all of that
> information on checkpoint, and then splitting it up into what can be
> done by userspace on restart and what still needs to be in the kernel.
>
Ah, this was a discussion in the containers@ mailing list ?
Sorry I missed it, I will look at the containers@ archives.
If the checkpoint is done from the kernel, why the restart wouldn't be
in the kernel too ?
Do you have a list of what is restartable from userspace or from the
kernel ?
Is there any documentation about the statefile format I can use if I
want to implement myself an userspace CR solution based on this kernel
patchset ?
> Similarly, the task structure is currently exported by the kernel on
> checkpoint, but recreated in userspace on restart.
>
(I guess you meant tasks hierarchy/tree) Well I understand why this is
done from userspace but I don't like the idea of digging in the
statefile, but there's no accounting for taste :)
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next prev parent reply other threads:[~2009-09-30 16:16 UTC|newest]
Thread overview: 101+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-09-23 23:50 [PATCH 00/80] Kernel based checkpoint/restart [v18] Oren Laadan
2009-09-23 23:50 ` [PATCH v18 01/80] c/r: extend arch_setup_additional_pages() Oren Laadan
2009-09-23 23:50 ` [PATCH v18 02/80] x86: ptrace debugreg checks rewrite Oren Laadan
2009-09-23 23:50 ` [PATCH v18 03/80] c/r: break out new_user_ns() Oren Laadan
2009-09-23 23:50 ` [PATCH v18 04/80] c/r: split core function out of some set*{u,g}id functions Oren Laadan
2009-09-23 23:50 ` [PATCH v18 05/80] cgroup freezer: Fix buggy resume test for tasks frozen with cgroup freezer Oren Laadan
2009-09-23 23:50 ` [PATCH v18 06/80] cgroup freezer: Update stale locking comments Oren Laadan
2009-09-23 23:50 ` [PATCH v18 07/80] cgroup freezer: Add CHECKPOINTING state to safeguard container checkpoint Oren Laadan
2009-09-23 23:50 ` [PATCH v18 08/80] cgroup freezer: interface to freeze a cgroup from within the kernel Oren Laadan
2009-09-23 23:50 ` [PATCH v18 09/80] Namespaces submenu Oren Laadan
2009-09-23 23:50 ` [PATCH v18 10/80] c/r: make file_pos_read/write() public Oren Laadan
2009-09-23 23:50 ` [PATCH v18 11/80] pids 1/7: Factor out code to allocate pidmap page Oren Laadan
2009-09-23 23:50 ` [PATCH v18 12/80] pids 2/7: Have alloc_pidmap() return actual error code Oren Laadan
2009-09-23 23:50 ` [PATCH v18 13/80] pids 3/7: Add target_pid parameter to alloc_pidmap() Oren Laadan
2009-09-23 23:50 ` [PATCH v18 14/80] pids 4/7: Add target_pids parameter to alloc_pid() Oren Laadan
2009-09-23 23:50 ` [PATCH v18 15/80] pids 5/7: Add target_pids parameter to copy_process() Oren Laadan
2009-09-23 23:50 ` [PATCH v18 16/80] pids 6/7: Define do_fork_with_pids() Oren Laadan
2009-09-23 23:50 ` [PATCH v18 17/80] pids 7/7: Define clone_with_pids syscall Oren Laadan
2009-09-23 23:50 ` [PATCH v18 18/80] c/r: create syscalls: sys_checkpoint, sys_restart Oren Laadan
2009-09-23 23:50 ` [PATCH v18 19/80] c/r: documentation Oren Laadan
2009-09-23 23:51 ` [PATCH v18 20/80] c/r: basic infrastructure for checkpoint/restart Oren Laadan
[not found] ` <1253749920-18673-21-git-send-email-orenl-RdfvBDnrOixBDgjK7y7TUQ@public.gmane.org>
2009-09-24 16:03 ` Daniel Walker
2009-09-24 17:33 ` Oren Laadan
2009-09-23 23:51 ` [PATCH v18 21/80] c/r: x86_32 support " Oren Laadan
2009-09-23 23:51 ` [PATCH v18 22/80] c/r: external checkpoint of a task other than ourself Oren Laadan
2009-09-23 23:51 ` [PATCH v18 23/80] c/r: export functionality used in next patch for restart-blocks Oren Laadan
2009-09-23 23:51 ` [PATCH v18 24/80] c/r: restart-blocks Oren Laadan
2009-09-23 23:51 ` [PATCH v18 25/80] c/r: checkpoint multiple processes Oren Laadan
2009-09-23 23:51 ` [PATCH v18 26/80] c/r: restart " Oren Laadan
2009-09-23 23:51 ` [PATCH v18 27/80] c/r: introduce PF_RESTARTING, and skip notification on exit Oren Laadan
2009-09-23 23:51 ` [PATCH v18 28/80] c/r: support for zombie processes Oren Laadan
2009-09-23 23:51 ` [PATCH v18 29/80] c/r: Save and restore the [compat_]robust_list member of the task struct Oren Laadan
2009-09-23 23:51 ` [PATCH v18 30/80] c/r: infrastructure for shared objects Oren Laadan
2009-09-23 23:51 ` [PATCH v18 31/80] c/r: detect resource leaks for whole-container checkpoint Oren Laadan
2009-09-23 23:51 ` [PATCH v18 32/80] deferqueue: generic queue to defer work Oren Laadan
2009-09-23 23:51 ` [PATCH v18 33/80] c/r: introduce new 'file_operations': ->checkpoint, ->collect() Oren Laadan
2009-09-23 23:51 ` [PATCH v18 34/80] c/r: dump open file descriptors Oren Laadan
2009-09-23 23:51 ` [PATCH v18 35/80] c/r: restore " Oren Laadan
2009-09-23 23:51 ` [PATCH v18 36/80] c/r: introduce method '->checkpoint()' in struct vm_operations_struct Oren Laadan
2009-09-23 23:51 ` [PATCH v18 37/80] c/r: dump memory address space (private memory) Oren Laadan
2009-09-23 23:51 ` [PATCH v18 38/80] c/r: restore " Oren Laadan
2009-09-23 23:51 ` [PATCH v18 39/80] c/r: add generic '->checkpoint' f_op to ext fses Oren Laadan
2009-09-23 23:51 ` [PATCH v18 40/80] c/r: add generic '->checkpoint()' f_op to simple devices Oren Laadan
2009-09-23 23:51 ` [PATCH v18 41/80] Add the checkpoint operation for opened files of generic filesystems Oren Laadan
2009-09-23 23:51 ` [PATCH v18 42/80] c/r: export shmem_getpage() to support shared memory Oren Laadan
2009-09-23 23:51 ` [PATCH v18 43/80] c/r: dump anonymous- and file-mapped- " Oren Laadan
2009-09-23 23:51 ` [PATCH v18 44/80] c/r: restore " Oren Laadan
2009-09-23 23:51 ` [PATCH v18 45/80] splice: export pipe/file-to-pipe/file functionality Oren Laadan
2009-09-23 23:51 ` [PATCH v18 46/80] c/r: support for open pipes Oren Laadan
2009-09-23 23:51 ` [PATCH v18 47/80] c/r: checkpoint and restore FIFOs Oren Laadan
2009-09-23 23:51 ` [PATCH v18 48/80] c/r: make ckpt_may_checkpoint_task() check each namespace individually Oren Laadan
2009-09-23 23:51 ` [PATCH v18 49/80] c/r: support for UTS namespace Oren Laadan
2009-09-29 18:13 ` Nikita V. Youshchenko
[not found] ` <200909292213.21266-vlktAfmDCSZSq9BJjBFyUp/QNRX+jHPU@public.gmane.org>
2009-09-29 18:51 ` Serge E. Hallyn
2009-09-29 23:01 ` Oren Laadan
2009-09-23 23:51 ` [PATCH v18 50/80] c/r (ipc): allow allocation of a desired ipc identifier Oren Laadan
2009-09-23 23:51 ` [PATCH v18 51/80] c/r: save and restore sysvipc namespace basics Oren Laadan
2009-09-23 23:51 ` [PATCH v18 52/80] c/r: support share-memory sysv-ipc Oren Laadan
2009-09-23 23:51 ` [PATCH v18 53/80] c/r: support message-queues sysv-ipc Oren Laadan
2009-09-23 23:51 ` [PATCH v18 54/80] c/r: support semaphore sysv-ipc Oren Laadan
2009-09-23 23:51 ` [PATCH v18 55/80] c/r: (s390): expose a constant for the number of words (CRs) Oren Laadan
2009-09-23 23:51 ` [PATCH v18 56/80] c/r: add CKPT_COPY() macro Oren Laadan
2009-09-23 23:51 ` [PATCH v18 57/80] c/r: define s390-specific checkpoint-restart code Oren Laadan
2009-09-23 23:51 ` [PATCH v18 58/80] c/r: clone_with_pids: define the s390 syscall Oren Laadan
2009-09-23 23:51 ` [PATCH v18 59/80] c/r: capabilities: define checkpoint and restore fns Oren Laadan
2009-09-23 23:51 ` [PATCH v18 60/80] c/r: checkpoint and restore task credentials Oren Laadan
2009-09-23 23:51 ` [PATCH v18 61/80] c/r: restore file->f_cred Oren Laadan
2009-09-23 23:51 ` [PATCH v18 62/80] c/r: checkpoint and restore (shared) task's sighand_struct Oren Laadan
2009-09-23 23:51 ` [PATCH v18 63/80] c/r: [signal 1/4] blocked and template for shared signals Oren Laadan
2009-09-23 23:51 ` [PATCH v18 64/80] c/r: [signal 2/4] checkpoint/restart of rlimit Oren Laadan
2009-09-23 23:51 ` [PATCH v18 65/80] c/r: [signal 3/4] pending signals (private, shared) Oren Laadan
2009-09-23 23:51 ` [PATCH v18 66/80] c/r: [signal 4/4] support for real/virt/prof itimers Oren Laadan
2009-09-23 23:51 ` [PATCH v18 67/80] Expose may_setuid() in user.h and add may_setgid() (v2) Oren Laadan
2009-09-23 23:51 ` [PATCH v18 68/80] Add common socket helpers to unify the security hooks Oren Laadan
2009-09-23 23:51 ` [PATCH v18 69/80] c/r: introduce checkpoint/restore methods to struct proto_ops Oren Laadan
2009-09-23 23:51 ` [PATCH v18 70/80] c/r: Add AF_UNIX support (v12) Oren Laadan
2009-09-23 23:51 ` [PATCH v18 71/80] c/r: [pty 1/2] allow allocation of desired pty slave Oren Laadan
[not found] ` <1253749920-18673-1-git-send-email-orenl-RdfvBDnrOixBDgjK7y7TUQ@public.gmane.org>
2009-09-23 23:51 ` [PATCH v18 72/80] c/r: [pty 2/2] support for pseudo terminals Oren Laadan
2009-09-23 23:51 ` [PATCH v18 77/80] powerpc: checkpoint/restart implementation Oren Laadan
2009-09-23 23:51 ` [PATCH v18 73/80] c/r: correctly restore pgid Oren Laadan
2009-09-23 23:51 ` [PATCH v18 74/80] c/r: support for controlling terminal and job control Oren Laadan
2009-09-23 23:51 ` [PATCH v18 75/80] powerpc: reserve checkpoint arch identifiers Oren Laadan
2009-09-23 23:51 ` [PATCH v18 76/80] powerpc: provide APIs for validating and updating DABR Oren Laadan
2009-09-23 23:51 ` [PATCH v18 78/80] powerpc: wire up checkpoint and restart syscalls Oren Laadan
2009-09-23 23:51 ` [PATCH v18 79/80] powerpc: enable checkpoint support in Kconfig Oren Laadan
2009-09-23 23:52 ` [PATCH v18 80/80] powerpc: clone_with_pids implementation Oren Laadan
2009-09-24 13:05 ` [PATCH 00/80] Kernel based checkpoint/restart [v18] Rishikesh
2009-09-24 16:27 ` Dan Smith
2009-09-24 18:20 ` Rishikesh
2009-09-24 22:41 ` Andrew Morton
[not found] ` <20090924154139.2a7dd5ec.akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
2009-09-25 13:59 ` Dan Smith
2009-09-26 14:56 ` Ingo Molnar
2009-09-28 16:37 ` Serge E. Hallyn
[not found] ` <20090928163704.GA3327-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2009-09-29 13:29 ` Daniel Lezcano
2009-09-30 14:39 ` Dan Smith
[not found] ` <87iqf0o5sf.fsf-FLMGYpZoEPULwtHQx/6qkW3U47Q5hpJU@public.gmane.org>
2009-09-30 16:16 ` Daniel Lezcano [this message]
[not found] ` <4AC38477.4070007-GANU6spQydw@public.gmane.org>
2009-09-30 16:29 ` Dan Smith
[not found] ` <87eipoo0po.fsf-FLMGYpZoEPULwtHQx/6qkW3U47Q5hpJU@public.gmane.org>
2009-09-30 18:01 ` Daniel Lezcano
[not found] ` <4AC39CE5.9080908-GANU6spQydw@public.gmane.org>
2009-09-30 18:28 ` Dan Smith
[not found] ` <877hvgnv6z.fsf-FLMGYpZoEPULwtHQx/6qkW3U47Q5hpJU@public.gmane.org>
2009-09-30 22:08 ` Daniel Lezcano
2009-09-29 18:31 ` Oren Laadan
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