AW: [linux-lvm] Revised petition WAS: LVM in stock kernel!?
M.Ritzert at CENIT.DE
M.Ritzert at CENIT.DE
Fri Aug 27 11:38:30 UTC 1999
> -----Ursprüngliche Nachricht-----
> Von: Shane Shrybman [SMTP:shane at zeke.yi.org]
> Gesendet am: Friday, 27. August 1999 00:29
> An: linux-lvm mailing list
> Betreff: [linux-lvm] Revised petition WAS: LVM in stock kernel!?
> I have added a few more points that I gleaned from this list. I have also
> taken the liberty of adding a SUPPORTERS section with people's names and
> email addresses. Please let me know if you have names to add or delete.
> We need more SUPPORTERS!
> Please tell me explicitly if you would like to be added to the list, ( I
> don't feel comfortable adding names to a petition otherwise).
Please add me to the list:
Michael Ritzert m.ritzert at cenit.de
> - LVM is almost a necessity when managing large amounts of storage.
> - it is one of the key enablers to open enterprise doors.
> - Many unix people think that storage layout is one of the most difficult
> aspects of maintaining a system. LVM simply makes storage management
> much more flexible by allowing storage to be reallocated easily at
> - Folks coming to Linux from other UNIXes which use an LVM (HP, AIX,
> Solaris, IRIX etc..) will be familiar and comfortable with LVM concepts
> and will more readily embrace the penguin.
> - The "out of storage space" is a very common problem for users especially
> new users. LVM makes resizing allocated space easier. This is perhaps
> the most common problem I here about from new users.
> - LVM is not a new concept and has been proven to be indispensible in
> other OSes, (ie. It is not just some hair-brained scheme that just makes
> things harder to learn and more complicated).
> - LVM provides the information to check i/o bottlenecks in a more fine
> grained manner and enables the user to solve them.
> - its implementation doesn't add much complexity to the
> block i/o layer (compared to for eg. MD) and therefore avoids
> - Opens the door for storage management GUIs that would make storage
> management easier for all users.
> - Integration with IBM's ADSM backup allows Linux machines to be backed up
> "snapshot" style by simply syncing volumes and grabbing volume data.
> - The ability to add a sort of volume log allows almost instant volume
> resyncing while maintaining an active data volume.
> - The (unique) ability to use either physical disks or partitions (and
> even flat files via the loopback device) allows for a
> very flexible Volume Group makeup (e.g. I don't get stuck having to
> allocate all of that 18GB drive to a volume when I only
> need 4GB of it, etc.). NOTE: This does add some cons when it comes to
> deporting (exporting) volumes and migrating disks,
> but it should be easy enough to overcome.
> - Using LVM is by definition adding a another logical layer for storage.
> Users not already familiar with an LVM will have to do some learning, or
> not use LVM.
> - some cost in performance since there's an additional layer of
> translation before you get to the actual disk blocks....
> Heinz Mauelshagen mauelsha at ez-darmstadt.telekom.de
> S. Ryan Quick ryan at phaedo.com
> Shane Shrybman shane at zeke.yi.org
> Mike Manocchio manocc at iname.com
> Ernie Lim elim at ern-e.org
> Marcus Ruehmann m.ruehmann at mail.isis.de
> James Pattinson jamesp at aethos.co.uk
> Fernando Dammous ferdam at internetcom.com.br
> Pascal pamvdam at ramoth.xs4all.nl
> Ulrik De Bie winmute at atlantique.venturi.net
> Klaus Strebel stb at ep-ag.com
> Mark Adams madams at jewels.com
> Drew Smith drew at winterland.mainland.ab.ca
> Luca Berra bluca at comedia.it
> Jonny B. brassow at lcse.umn.edu
> Mats Wichmann mats at laplaza.org
> Mark Kolb mkolb at srhs.org
> Comments ?
> Please feel free to edit and add your own points!
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