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    SubjectRe: [klibc] Exporting which partitions to md-configure
    On Mon, Jan 30, 2006 at 07:21:33PM -0800, Greg KH wrote:
    > On Mon, Jan 30, 2006 at 04:52:08PM -0800, H. Peter Anvin wrote:
    > > I'm putting the final touches on kinit, which is the user-space
    > > replacement (based on klibc) for the whole in-kernel root-mount complex.
    > > Pretty much the one thing remaining -- other than lots of testing --
    > > is to handle automatically mounted md devices. In order to do that,
    > > without adding userspace versions of all the paritition code (which may
    > > be a future change, but a pretty big one) it would be good if the
    > > partition flag to auto-configure RAID was available in userspace,
    > > presumably through sysfs.
    >
    > What are you looking for exactly? udev has a great helper program,
    > volume_id, that identifies any type of filesystem that Linux knows about
    > (it was based on the ext2 lib code, but smaller, and much more sane, and
    > works better.)
    >
    > Would that help out here?

    Oh, an example of it working:
    # vol_id /dev/sda3
    ID_FS_USAGE=filesystem
    ID_FS_TYPE=ext3
    ID_FS_VERSION=1.0
    ID_FS_UUID=9d2efd53-6b5a-4f84-86cc-def71269b7ca
    ID_FS_LABEL=
    ID_FS_LABEL_SAFE=
    # vol_id -t /dev/sda3
    ext3
    # vol_id -u /dev/sda3
    9d2efd53-6b5a-4f84-86cc-def71269b7ca

    It also shows just the label if you have one set (I don't on this
    disk...)

    thanks,

    greg k-h
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