From: Goffredo Baroncelli <kreijack@inwind.it>
To: Josef Bacik <jbacik@fusionio.com>,
linux-btrfs@vger.kernel.org, harald@redhat.com
Subject: Re: [PATCH] Btrfs: add DEVICE_READY ioctl
Date: Tue, 17 Jul 2012 19:17:43 +0200 [thread overview]
Message-ID: <50059E37.1020703@inwind.it> (raw)
In-Reply-To: <20120717115334.GA11226@twin.jikos.cz>
On 07/17/2012 01:53 PM, David Sterba wrote:
> On Fri, Jun 22, 2012 at 08:12:52PM +0200, Goffredo Baroncelli wrote:
>> On 06/21/2012 10:10 PM, Josef Bacik wrote:
>>> This will be used in conjunction with btrfs device ready <dev>. This is
[....]
>
>> Finally I am starting to think that we should definitely switch to a
>> /sys/btrfs style of interface
>
> I'm all for a sysfs interface, having an ioctl way of retrieving
> information is good, but not practical for use from scripting languages,
> namely for writing tests.
Moreover a sysfs interface is more extensible for further enanchement
>
> There are some guys working on the sysfs patches, I did preliminary
> reviews. The first step is to bring back the core sysfs support (mostly
> done iirc) and then exporting various information.
> I'll check what's the status.
Great, are there public patches, I am interested in contributing
>
>> think something like:
>>
>> /sys/btrfs/<fs-uuid>/<dev-uuid>/present
>> size
>> space-occuped
>> number-of-error
>> [...]
>>
>> /sys/btrfs/<fs-uuid>/<subvolume-id>/read-only
>> compressed
>> raid-mode
>> path
>> [...]
>>
>> /sys/btrfs/<fs-uuid>/label
>> mounted
>> read-only
>> compressed
>> raid-mode
>> [...]
>
> That's a good start for a discussion.
>
>
> david
> .
>
next prev parent reply other threads:[~2012-07-17 17:17 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-21 20:10 [RFC] A way to tell if all the devices in a file system are available Josef Bacik
2012-06-21 20:10 ` [PATCH] Btrfs: add DEVICE_READY ioctl Josef Bacik
2012-06-22 18:12 ` Goffredo Baroncelli
2012-07-17 11:53 ` David Sterba
2012-07-17 17:17 ` Goffredo Baroncelli [this message]
2012-06-21 20:10 ` [PATCH] Btrfs-progs: add btrfs device ready command Josef Bacik
2012-06-22 17:20 ` Goffredo Baroncelli
2012-06-22 10:33 ` [RFC] A way to tell if all the devices in a file system are available Harald Hoyer
2012-07-10 17:35 ` Harald Hoyer
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