:: Re: [Dng] Fwd: [dng] vdev status up…
Startseite
Nachricht löschen
Nachricht beantworten
Autor: Jude Nelson
Datum:  
To: Anto
CC: dng@lists.dyne.org
Betreff: Re: [Dng] Fwd: [dng] vdev status update
Hi Anto,

I push code to both github and git.devuan.org. Either one works :)

Thanks,
-Jude

On Fri, Apr 17, 2015 at 9:40 AM, Anto <aryanto@???> wrote:

> On 17/04/15 06:00, Jude Nelson wrote:
>
>> Hi Anto,
>>
>> I just committed preliminary support for using vdevd with devtmpfs.
>> vdevd should automatically detect whether or not devtmpfs is mounted on
>> /dev, and nevertheless run device setup scripts (by using its own device
>> metadata tree in /dev/vdev/ to see whether or not the device was actually
>> processed).
>>
>> NB for developers: this problem isn't specific to Linux--I expect to
>> encounter it with FreeBSD as well, since it has a full-blown in-kernel
>> devfs. vdevd will keep track of "OS quirks" in the future--one of which is
>> the "Device Already Exists" quirk, whereby vdevd simply expects the OS to
>> provide the device file (regardless of the mechanism). The Linux-specific
>> vdevd back-end now checks to see if vdevd will create files on a devtmpfs
>> filesystem, and enables that quirk if so.
>>
>> Funny, undocumented (!!) discovery: the devtmpfs filesystem type (see
>> statfs(2)) is the same (!!) as the tmpfs filesystem type, despite being a
>> fundamentally different filesystem. I'm surprised that this wasn't caught
>> during the devtmpfs code review--guess I'll have to file a bug report.
>> Anyway, if you find yourself wondering why vdev has to detect devtmpfs by
>> parsing /proc/mounts and verifying that the realpath of the mountpoint is
>> the same as or is a subdirectory of a devtmpfs mountpoint, that's why--we
>> (currently) can't rely on the f_fsid in statfs(2) or statvfs(2).
>>
>> Thanks,
>> Jude
>>
>>
> Hello Jude,
>
> Before I start pulling your latest commit, could you please let me know
> from which source should I pull that? Should it be from
> https://git.devuan.org/pkgs-utopia-substitution/vdev or
> https://github.com/jcnelson/vdev? So far I have been using the one on
> github.com.
>
> Cheers,
>
> Anto
>
>