lkml.org 
[lkml]   [2008]   [Aug]   [19]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: HSM (was Re: [malware-list] TALPA - a threat model? well sorta.)
    On Tue, 19 Aug 2008 09:14:16 +0200
    Pavel Machek <pavel@suse.cz> wrote:

    > On Mon 2008-08-18 12:43:39, Rik van Riel wrote:
    > > On Mon, 18 Aug 2008 16:33:13 +0100
    > > Alan Cox <alan@lxorguk.ukuu.org.uk> wrote:
    > >
    > > > > I could probably buy that, but I don't know how an HSM would
    > > > > work. Would we have everything we need at open for them to fire
    > > > > off?
    > > > >
    > > > > /me is HSM clueless and trying to include their needs is
    > > > > proving a challenge.
    > > >
    > > > So don't bother. Its a theoretical use for the most part so we can
    > > > mangle the interface later.
    > >
    > > Think of a consumer HSM application: backup to rsync.net
    > > or Amazon S3.
    > >
    > > Instead of waiting for the whole backup to be restored,
    > > you can start using the filesystem immediately. The
    > > block-on-open hook can be used by the restore program
    > > to fetch files from the remote backup site on an
    > > as-needed basis, with a full restore going on in the
    > > background.
    > >
    > > If the block-on-open hook can be used for that (even
    > > with additional magic, like creating empty HSM inodes
    > > with a special attr to notify "the data lives elsewhere"),
    > > HSM should be good.
    > >
    > > The "data lives elsewhere" bit/xattr/whatever could also
    > > be used on directories, so not even the whole directory
    > > tree would have to be restored right on restore :)
    >
    > But is this really needed to be cross-filesystem thing? I'd expect
    > this to be implemented with FUSE, maybe FUSE+unionfs...

    If you think FUSE+unionfs is a cleaner solution than one
    hook in the VFS, I've got a bridge to sell you.

    --
    All rights reversed.


    \
     
     \ /
      Last update: 2008-08-19 18:27    [W:8.823 / U:0.024 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site