From: "Michael Niederle" <mniederle@gmx.at>
To: "linux-btrfs@vger.kernel.org" <linux-btrfs@vger.kernel.org>
Subject: mount snapshot by object-id
Date: Thu, 9 Dec 2010 14:51:14 +0100 [thread overview]
Message-ID: <20101209145114.07f55914@simplux> (raw)
Hi!
I'm currently writing a btrfs-rescue tool and therefor began to study the
btrfs-on-disk structures in detail.
The root tree contains a ROOT_ITEM entry for *every* subvolume in the whole
file system, but only DIR_ITEM entries for subvolumes that were created in the
root directory of the filesystem.
If we have a destroyed root directory, there is no way to access subvolumes
stored deeper in the fs-tree by name. It might be nice to have the ability to
mount a subvolume by object-id. A simple tool could list all available
subvolumes with their object-ids, generation numbers, and so on.
Greetings, Michael
next reply other threads:[~2010-12-09 13:51 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-12-09 13:51 Michael Niederle [this message]
2010-12-09 14:31 ` mount snapshot by object-id Calvin Walton
2010-12-09 14:53 ` Dipl.-Ing. Michael Niederle
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