| ploop and mount options [message #47056] |
Tue, 03 July 2012 07:52  |
Corin Langosch
Messages: 18
Registered: March 2012
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Junior Member |
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Hi there,
Is there any way to specify mount options for the container's root
filesystem in the container's config when using ploop?
So a normal options string like
" noatime,data=writeback,journal_async_commit,barrier=0,errors =remount-ro ".
Thanks for any hints :)
Corin
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| Re: ploop and mount options [message #47065 is a reply to message #47056] |
Tue, 03 July 2012 14:16  |
Corin Langosch
Messages: 18
Registered: March 2012
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Junior Member |
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Hi again,
just a small follow up on this:
Inside the the container I'm able to change the barrier mount option with:
"mount -o remount,barrier=0 /" or "mount -o remount,barrier=1 /"
But changing other options like "noatime" (mount -o remount,noatime /)
fails with "mount: permission denied".
Now I wonder if this is intended or a bug? Why allow changing barrier
and deny noatime option?
BTW: I still haven't found a way to specify mount options in the
container's config :(
Corin
On 03.07.2012 at 09:52 +0200, Corin Langosch <info@corinlangosch.com> wrote:
> Hi there,
>
> Is there any way to specify mount options for the container's root
> filesystem in the container's config when using ploop?
>
> So a normal options string like
> " noatime,data=writeback,journal_async_commit,barrier=0,errors =remount-ro ".
>
> Thanks for any hints :)
>
> Corin
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| Re: ploop and mount options [message #47748 is a reply to message #47056] |
Thu, 06 September 2012 11:53 |
Corin Langosch
Messages: 18
Registered: March 2012
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Junior Member |
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Hi again,
just a small follow up on this:
Inside the the container I'm able to change the barrier mount option with:
"mount -o remount,barrier=0 /" or "mount -o remount,barrier=1 /"
But changing other options like "noatime" (mount -o remount,noatime /)
fails with "mount: permission denied".
Now I wonder if this is intended or a bug? Why allow changing barrier
and deny noatime option?
BTW: I still haven't found a way to specify mount options in the
container's config :(
Corin
On 03.07.2012 at 09:52 +0200, Corin Langosch <info@corinlangosch.com> wrote:
> Hi there,
>
> Is there any way to specify mount options for the container's root
> filesystem in the container's config when using ploop?
>
> So a normal options string like
> " noatime,data=writeback,journal_async_commit,barrier=0,errors =remount-ro ".
>
> Thanks for any hints :)
>
> Corin
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| Re: ploop and mount options [message #47773 is a reply to message #47748] |
Sat, 08 September 2012 09:19 |
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On 09/06/2012 03:53 PM, Corin Langosch wrote:
> Hi again,
>
> just a small follow up on this:
>
> Inside the the container I'm able to change the barrier mount option
> with:
>
> "mount -o remount,barrier=0 /" or "mount -o remount,barrier=1 /"
>
> But changing other options like "noatime" (mount -o remount,noatime /)
> fails with "mount: permission denied".
>
> Now I wonder if this is intended or a bug? Why allow changing barrier
> and deny noatime option?
Well, I can't tell why it lets you remount with barrier but does not let
you remount with noatime.
But I can tell noatime is not needed nowdays, since relatime is used by
default and makes much more sense.
You can file a bug to bugzilla.openvz.org, component ploop
>
> BTW: I still haven't found a way to specify mount options in the
> container's config :(
Again, file a bug (enhancement) to bugzilla.openvz.org, component vzctl.
>
> Corin
>
> On 03.07.2012 at 09:52 +0200, Corin Langosch <info@corinlangosch.com>
> wrote:
>> Hi there,
>>
>> Is there any way to specify mount options for the container's root
>> filesystem in the container's config when using ploop?
>>
>> So a normal options string like
>> " noatime,data=writeback,journal_async_commit,barrier=0,errors =remount-ro ".
>>
>>
>> Thanks for any hints :)
>>
>> Corin
Kir Kolyshkin
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| Re: ploop and mount options [message #47774 is a reply to message #47773] |
Sat, 08 September 2012 13:31 |
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On 09/08/2012 01:19 PM, Kir Kolyshkin wrote:
> On 09/06/2012 03:53 PM, Corin Langosch wrote:
>> Hi again,
>>
>> just a small follow up on this:
>>
>> Inside the the container I'm able to change the barrier mount option
>> with:
>>
>> "mount -o remount,barrier=0 /" or "mount -o remount,barrier=1 /"
>>
>> But changing other options like "noatime" (mount -o remount,noatime
>> /) fails with "mount: permission denied".
>>
>> Now I wonder if this is intended or a bug? Why allow changing barrier
>> and deny noatime option?
>
> Well, I can't tell why it lets you remount with barrier but does not
> let you remount with noatime.
> But I can tell noatime is not needed nowdays, since relatime is used
> by default and makes much more sense.
>
> You can file a bug to bugzilla.openvz.org, component ploop
>
>>
>> BTW: I still haven't found a way to specify mount options in the
>> container's config :(
>
> Again, file a bug (enhancement) to bugzilla.openvz.org, component vzctl.
In fact I just implemented that as a --mount_opts option to vzctl set.
See these git commits:
http://git.openvz.org/?p=vzctl;a=commit;h=af95fbdf
http://git.openvz.org/?p=vzctl;a=commit;h=287d0d
http://git.openvz.org/?p=vzctl;a=commit;h=7eb61c
Feel free to test and report your results.
Kir Kolyshkin
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| Re: ploop and mount options [message #47817 is a reply to message #47808] |
Wed, 12 September 2012 18:57 |
Corin Langosch
Messages: 18
Registered: March 2012
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Junior Member |
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On 12.09.2012 at 14:21 +0200, Kir Kolyshkin <kir@openvz.org> wrote:
> On 09/12/2012 03:59 PM, Corin Langosch wrote:
>>
>> On 08.09.2012 at 15:31 +0200, Kir Kolyshkin <kir@openvz.org> wrote:
>>>
>>> In fact I just implemented that as a --mount_opts option to vzctl
>>> set. See these git commits:
>>> http://git.openvz.org/?p=vzctl;a=commit;h=af95fbdf
>>> http://git.openvz.org/?p=vzctl;a=commit;h=287d0d
>>> http://git.openvz.org/?p=vzctl;a=commit;h=7eb61c
>>>
>>> Feel free to test and report your results.
>>
>> That's really great news. :)
>>
>> I just checked out the repo and tried to compile with:
>>
>> ./autogen.sh
>> ./configure --prefix=/usr
>>
>> Now configure complains:
>>
>> checking ploop/dynload.h usability... no
>> checking ploop/dynload.h presence... no
>> checking for ploop/dynload.h... no
>> configure: error:
>> The ploop library headers not found or way too old. You need to either
>> install recent ploop library headers (most probably ploop-devel
>> package),
>> or use ./configure --without-ploop
>>
>> Now I also checked out the repo "ploop", but is doesn't contain the
>> missing file "dynload.h". Where can I get it?
>
> The file is auto-generated. The best way to proceed is compile and
> install ploop package first.
>
> cd ploop
> ./setver.sh -i
>
> Will build and install ploop rpms for you (and you can use same for
> vzctl).
Wow, I finally managed to compile and install everything. It wasn't that
easy because I needed to setup a centos6 vm first as I didn't get the
stuff compiled using debian squeeze. But now it works great without any
problems!
Corin
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