On Mon, Jan 10, 2011 at 5:01 AM, Hugo Mills <hugo-l...@carfax.org.uk> wrote:
>   There is a root subvolume namespace (subvolid=0), which may contain
> files, directories, and other subvolumes. This root subvolume is what
> you see when you mount a newly-created btrfs filesystem.

Is there a detailed explanation in the wiki about subvolid=0? What
does "top level 5" in the output of "btrfs subvolume list" mean (I
thought "5" was subvolid for root subvolume)?

# btrfs subvolume list /
ID 256 top level 5 path maverick-base
ID 257 top level 5 path kernel-2.6.37

>
>   The default subvolume is simply what you get when you mount the
> filesystem without a subvol or subvolid parameter to mount. Initially,
> the default subvolume is set to be the root subvolume. If another
> subvolume is set to be the default, then the root subvolume can only
> be mounted with the subvolid=0 mount option.

... and mounting with either subvolid=5 and subvolid=0 gives the same
result in my case.

-- 
Fajar
--
To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in
the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

Reply via email to