R: Re: mount command not honoring rootflags passed

R: Re: mount command not honoring rootflags passed

[kreijack]

Hi Thomas,

>----Messaggio originale----
>Da: thomas@kupper.org
>Data: 22/01/2010 10.48
>A: "Leszek Ciesielski"<skolima@gmail.com>
>Cc: "linux-btrfs"<linux-btrfs@vger.kernel.org>
>Ogg: Re: mount command not honoring rootflags passed
>
>
>On 22 Jan 2010, at 10:40, Leszek Ciesielski wrote:
>
>> On Fri, Jan 22, 2010 at 10:30 AM, Thomas Kupper <thomas@kupper.org> wrote:
[...]
>> Doesn't 'cat /proc/mounts' show the actually used mount options?
>
>No, it doesn't in my case - Ubuntu 9.10 with 2.6.32-10-generic kernel.
>
>thomas # cat /proc/mounts | fgrep ' / '
>rootfs / rootfs rw 0 0
>/dev/sda3 / btrfs rw,relatime 0 0
>
>thomas # cat /proc/cmdline
>[...] root=/dev/sda3 ro rootflags=subvol=rootfs-snapshot-001--
>To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in
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The btrfs code doesn't show the subvol= mount option in cat /proc/mount. I 
sent a patch which should solve it.

http://article.gmane.org/gmane.comp.file-systems.btrfs/4487

But today it is not merged.

Br
Goffredo

Re: R: Re: mount command not honoring rootflags passed

[Thomas Kupper]

Hello Goffredo,

On 22 Jan 2010, at 13:37, kreijack@libero.it wrote:

> Hi Thomas,
> 
>> ----Messaggio originale----
>> Da: thomas@kupper.org
>> Data: 22/01/2010 10.48
>> A: "Leszek Ciesielski"<skolima@gmail.com>
>> Cc: "linux-btrfs"<linux-btrfs@vger.kernel.org>
>> Ogg: Re: mount command not honoring rootflags passed
>> 
>> 
>> On 22 Jan 2010, at 10:40, Leszek Ciesielski wrote:
>> 
>>> On Fri, Jan 22, 2010 at 10:30 AM, Thomas Kupper <thomas@kupper.org> wrote:
> [...]
>>> Doesn't 'cat /proc/mounts' show the actually used mount options?
>> 
>> No, it doesn't in my case - Ubuntu 9.10 with 2.6.32-10-generic kernel.
>> 
>> thomas # cat /proc/mounts | fgrep ' / '
>> rootfs / rootfs rw 0 0
>> /dev/sda3 / btrfs rw,relatime 0 0
>> 
>> thomas # cat /proc/cmdline
>> [...] root=/dev/sda3 ro rootflags=subvol=rootfs-snapshot-001--
>> To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in
>> the body of a message to majordomo@vger.kernel.org
>> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> 
> 
> The btrfs code doesn't show the subvol= mount option in cat /proc/mount. I 
> sent a patch which should solve it.
> 
> http://article.gmane.org/gmane.comp.file-systems.btrfs/4487
> 
> But today it is not merged.

Excellent! That was fast, thanks alot. I have to get around how to compile one module only first anyway (the Ubuntu or Debian way).

> Br
> Goffredo

Have a good day,
Thomas