Hi,
> -Original Message-
> From: Serge Hallyn [mailto:serge.hal...@ubuntu.com]
> Sent: Tuesday, July 15, 2014 12:16 PM
> To: Chen, Hanxiao/陈 晗霄
> Subject: Re: [RFC]Pid conversion between pid namespace
> > A-2) syscall pid_t getnspid(pid_t query_pid, pid_t observer_pid)
> > pros:
>
> -Original Message-
> From: Eric W. Biederman [mailto:ebied...@xmission.com]
> Sent: Saturday, April 26, 2014 3:18 AM
> To: Oleg Nesterov
> Cc: Chen, Hanxiao/陈 晗霄; contain...@lists.linux-foundation.org;
> linux-kernel@vger.kernel.org; Andrew Morton; Serge Hallyn; Daniel P. Berrange;
> Al
Hi,
> -Original Message-
> From: Eric W. Biederman [mailto:ebied...@xmission.com]
> Sent: Wednesday, June 18, 2014 9:31 AM
> To: Chen, Hanxiao/陈 晗霄
> Cc: contain...@lists.linux-foundation.org; linux-kernel@vger.kernel.org;
> Andrew Morton; Serge Hallyn; Daniel P. Berrange; Oleg Nesterov; A
> -Original Message-
> From: Oleg Nesterov [mailto:o...@redhat.com]
> Sent: Thursday, June 19, 2014 1:58 AM
> To: Chen, Hanxiao/陈 晗霄
> Cc: contain...@lists.linux-foundation.org; linux-kernel@vger.kernel.org;
> Andrew Morton; Eric W. Biederman; Serge Hallyn; Daniel P. Berrange; Al Viro;
>
y welcomed!
Thanks,
- Chen
> -Original Message-
> From: containers-boun...@lists.linux-foundation.org
> [mailto:containers-boun...@lists.linux-foundation.org] On Behalf Of
> chenhanx...@cn.fujitsu.com
> Sent: Wednesday, July 09, 2014 6:34 PM
> To: Eric W. Biederman (ebie
Hello,
How to reproduce:
1. Prepare a container, enable userns and disable netns
2. use libvirt-lxc to start a container
3. libvirt could not mount sysfs then failed to start.
Then I found that
commit 7dc5dbc879bd0779924b5132a48b731a0bc04a1e says:
"Don't allow mounting sysfs unless the caller has
rg;
> linux-kernel@vger.kernel.org
> Subject: Re: Could not mount sysfs when enable userns but disable netns
>
> "Serge E. Hallyn" writes:
>
> > Quoting chenhanx...@cn.fujitsu.com (chenhanx...@cn.fujitsu.com):
> >> Hello,
> >>
> >> How to re
Hi,
We had some discussions on how to carry out
pid conversion between pid namespace via:
syscall[1] and procfs[2].
Pavel suggested that a syscall like
(ID, NS1, NS2) into (ID).
Serge suggested that a syscall
pid_t getnspid(pid_t query_pid, pid_t observer_pid).
Eric and Richard suggested a pr
> -Original Message-
> From: Serge Hallyn [mailto:serge.hal...@ubuntu.com]
> Sent: Wednesday, June 25, 2014 10:39 PM
> To: Chen, Hanxiao/陈 晗霄
> Cc: Serge E. Hallyn; Eric W. Biederman; Richard Weinberger;
> contain...@lists.linux-foundation.org; linux-kernel@vger.kernel.org; Oleg
> Nestero
Hi,
Let me summarize our discussions of ID conversion by pros/cons:
A) make new system call for translation
A-1) systemcall(ID, NS1, NS2) into (ID).
pros:
- has a reference ns(NS2)
We could get any lower level ID directly.
cons:
- lack of
> -Original Message-
> From: Richard Weinberger [mailto:richard.weinber...@gmail.com]
> Sent: Monday, May 26, 2014 7:10 PM
> To: Chen, Hanxiao/陈 晗霄
> Cc: Linux Containers; LKML; Andrew Morton; Eric W. Biederman; Serge Hallyn;
> Daniel P. Berrange; Oleg Nesterov; Al Viro; David Howells
> S
Hi Vasily,
> -Original Message-
> From: Vasily Kulikov [mailto:sego...@gmail.com]
> Sent: Tuesday, May 27, 2014 2:05 AM
> To: Chen, Hanxiao/陈 晗霄
> Cc: contain...@lists.linux-foundation.org; linux-kernel@vger.kernel.org; Serge
> Hallyn; Oleg Nesterov; David Howells; Eric W. Biederman; Andre
> -Original Message-
> From: containers-boun...@lists.linux-foundation.org
> On 05/29/2014 09:59 AM, Vasily Kulikov wrote:
> > On Wed, May 28, 2014 at 23:27 +0400, Pavel Emelyanov wrote:
> >> On 05/28/2014 10:28 PM, Vasily Kulikov wrote:
> >>> On Wed, May 28, 2014 at 16:44 +0400, Pavel Em
> -Original Message-
> From: Pavel Emelyanov [mailto:xe...@parallels.com]
> Sent: Tuesday, June 17, 2014 8:13 PM
> To: Chen, Hanxiao/陈 晗霄
> Cc: contain...@lists.linux-foundation.org; linux-kernel@vger.kernel.org;
> Andrew Morton; Eric W. Biederman; Serge Hallyn; Daniel P. Berrange; Oleg
> -Original Message-
> From: mtk.linux.li...@gmail.com [mailto:mtk.linux.li...@gmail.com] On Behalf
> Of
> Michael Kerrisk
> Sent: Wednesday, June 18, 2014 2:27 AM
> To: Chen, Hanxiao/陈 晗霄
> Cc: containers; Linux Kernel; Richard Weinberger; Serge Hallyn; Oleg Nesterov;
> David Howells; E
Hi
> -Original Message-
> From: Richard Weinberger [mailto:rich...@nod.at]
> Sent: Friday, June 20, 2014 7:02 PM
> To: Chen, Hanxiao/陈 晗霄; contain...@lists.linux-foundation.org;
> linux-kernel@vger.kernel.org
> Cc: Eric W. Biederman; Serge Hallyn; Daniel P. Berrange; Oleg Nesterov; Al
> V
Hi,
> -Original Message-
> From: Serge E. Hallyn [mailto:se...@hallyn.com]
> Sent: Monday, June 23, 2014 9:33 PM
> To: Chen, Hanxiao/陈 晗霄
> Cc: Richard Weinberger; contain...@lists.linux-foundation.org;
> linux-kernel@vger.kernel.org; Pavel Emelyanov; linux-...@vger.kernel.org;
> Serge Hal
> -Original Message-
> From: Li Zefan [mailto:lize...@huawei.com]
> Sent: Wednesday, June 25, 2014 11:44 AM
> On 2014/6/25 11:30, Chen Hanxiao wrote:
> > s/iff/if
> >
>
> This is not a typo. iff == if and only if.
>
I see.
Thanks for teaching.
- Chen
> -Original Message-
> From: Serge E. Hallyn [mailto:se...@hallyn.com]
> Sent: Thursday, August 28, 2014 9:50 PM
> To: Chen, Hanxiao/陈 晗霄
> Cc: Serge Hallyn; Richard Weinberger (rich...@nod.at);
[snip]
> > > I like your proc approach. Do you have an implementation?
> >
> > Thanks for yo
Hi,
> -Original Message-
> From: Serge Hallyn [mailto:serge.hal...@ubuntu.com]
> Sent: Tuesday, August 05, 2014 6:21 AM
>
> Quoting chenhanx...@cn.fujitsu.com (chenhanx...@cn.fujitsu.com):
> > Hi,
> >
> > We discussed two ways of pid conversion:
> &
> -Original Message-
> From: Serge Hallyn [mailto:serge.hal...@ubuntu.com]
> Sent: Friday, August 08, 2014 12:12 AM
> To: Chen, Hanxiao/陈 晗霄
> > > How much more kernel space does this take up?
> > >
> >
> > Only first process when creating new ns will be add here.
> > So there would not
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