[linux-lvm] LVM scary!

[linux-lvm] LVM scary!

[Jim Ford]

Hmm, there are so many horror stories on this forum that I'm beginning 
to wish that I hadn't chosen the LVM option when I installed my Kubuntu 
system! Mind you, having said that, I never had problems with 5 years of 
software raid on a Slackware box. 

Just though I'd mention it!

Jim Ford

[linux-lvm] LVM NOT scary! (was: LVM scary!)

[Thomas Schwinge]

On Mon, Apr 03, 2006 at 01:32:48PM +0100, Jim Ford wrote:
> Hmm, there are so many horror stories on this forum that I'm beginning 
> to wish that I hadn't chosen the LVM option when I installed my Kubuntu 
> system! Mind you, having said that, I never had problems with 5 years of 
> software raid on a Slackware box. 

Well, it's commonly know that mostly the horror stories are what people
tell each other and remember.  And especially in this very place, as it's
main purpose (apart from developing the software further) is to be a
contact point for people encountering such issues.

I'm quite sure that there are (ten- / hundred-)thousands of LVM
installations that just work; like those I did on a number of systems.


> Just though I'd mention it!

Me too.


Regards,
 Thomas


P.S. Next project for me: make GRUB2 read LVM volumes.  Anyone who wants
to help or has already done something, please speak up now.

Re: [linux-lvm] LVM NOT scary! (was: LVM scary!)

[Jan-Benedict Glaw]

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On Mon, 2006-04-03 08:41:12 -0400, Thomas Schwinge <tschwinge@gnu.org> wrote:
> On Mon, Apr 03, 2006 at 01:32:48PM +0100, Jim Ford wrote:
> > Hmm, there are so many horror stories on this forum that I'm beginning 
> > to wish that I hadn't chosen the LVM option when I installed my Kubuntu 
> > system! Mind you, having said that, I never had problems with 5 years of 
> > software raid on a Slackware box. 
> 
> Well, it's commonly know that mostly the horror stories are what people
> tell each other and remember.  And especially in this very place, as it's
> main purpose (apart from developing the software further) is to be a
> contact point for people encountering such issues.

Full ACK.  The most scary cases are those where people expect to get
high-availability by LVM'ing some IDE disks together.

Hey, LVM on MD really is a nice thing, even dm-crypt ontop, works
flawlessly :)

MfG, JBG

-- 
Jan-Benedict Glaw       jbglaw@lug-owl.de    . +49-172-7608481             _ O _
"Eine Freie Meinung in  einem Freien Kopf    | Gegen Zensur | Gegen Krieg  _ _ O
 für einen Freien Staat voll Freier Bürger"  | im Internet! |   im Irak!   O O O
ret = do_actions((curr | FREE_SPEECH) & ~(NEW_COPYRIGHT_LAW | DRM | TCPA));

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Re: [linux-lvm] LVM scary!

[Anil Kumar Sharma]

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On 4/3/06, Jim Ford <jaford@watford53.freeserve.co.uk> wrote:
>
> Hmm, there are so many horror stories on this forum that I'm beginning
> to wish that I hadn't chosen the LVM option when I installed my Kubuntu
> system! Mind you, having said that, I never had problems with 5 years of
> software raid on a Slackware box.
>
>
I agree it is scary, by which I mean that you got to play with it carefully.
Having said that, I find LVM a step (generation) above normal partitioning
system.
It can give lot of flexibility provided that is planned properly and in
advance.
In many cases I find users (not anyone particular), let's call 'click
happy',
and here I mean to say that people have taken it for granted that LVM will
be a cake walk, It is if you know how you can play with it.
LVM is not like a computer game where one plays and learns. Here, replay is
very costly and that is causing lot of anguish among users.

--
Anil Kumar Shrama

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Re: [linux-lvm] LVM NOT scary! (was: LVM scary!)

[Anil Kumar Sharma]

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On 4/3/06, Thomas Schwinge <tschwinge@gnu.org > wrote:
>
> On Mon, Apr 03, 2006 at 01:32:48PM +0100, Jim Ford wrote:
> > Hmm, there are so many horror stories on this forum that I'm beginning
> > to wish that I hadn't chosen the LVM option when I installed my Kubuntu
> > system! Mind you, having said that, I never had problems with 5 years of
>
> > software raid on a Slackware box.
>
> Well, it's commonly know that mostly the horror stories are what people
> tell each other and remember.  And especially in this very place, as it's
> main purpose (apart from developing the software further) is to be a
> contact point for people encountering such issues.
>
> I'm quite sure that there are (ten- / hundred-)thousands of LVM
> installations that just work; like those I did on a number of systems.


Lists move too fast, what I wrote in other thread should have appeared here.


P.S . Next project for me: make GRUB2 read LVM volumes.  Anyone who wants
> to help or has already done something, please speak up now.
>
>
Can contribute in testing, please intimate pointer to test versions.
Meanwhile wish you all the best for making GRUB2.


--
Anil Kumar Shrama

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Re: [linux-lvm] LVM NOT scary!

[Jim Ford]

Jan-Benedict Glaw wrote:

> Full ACK. The most scary cases are those where people expect to get
>
>high-availability by LVM'ing some IDE disks together.
>
>Hey, LVM on MD really is a nice thing, even dm-crypt ontop, works
>flawlessly :)
>  
>
What, you mean Mini Disk - the little magneto optical disks used for 
personal audio players? What's the advantage in that, aren't they only 
about a 1 gig storage?

Jim Ford

Re: [linux-lvm] LVM NOT scary!

[Martin Eisenhardt]

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On Monday April 3 2006 15:41, Jim Ford wrote:
> Jan-Benedict Glaw wrote:
> > Full ACK. The most scary cases are those where people expect to get
> >
> >high-availability by LVM'ing some IDE disks together.
> >
> >Hey, LVM on MD really is a nice thing, even dm-crypt ontop, works
> >flawlessly :)
>
> What, you mean Mini Disk - the little magneto optical disks used for
> personal audio players? What's the advantage in that, aren't they only
> about a 1 gig storage?

No, he is talking about MD in the Linux kernel - the things that enables 
device mapping, RAID, and all the other wonderful thingies. :-D

Regards
Martin

>
> Jim Ford
>
> _______________________________________________
> linux-lvm mailing list
> linux-lvm@redhat.com
> https://www.redhat.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/

-- 
Dipl. Wirtsch.Inf.(Univ.) Martin Eisenhardt

Otto-Friedrich-Universität Bamberg
Fakultät Wirtschaftinformatik und Angewandte Informatik
Lehrstuhl für Medieninformatik

D-96045 Bamberg

fon: +49 (951) 863-2856
fax: +49 (951) 863-2852

www: http://www.mneisen.org

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Re: [linux-lvm] LVM NOT scary!

[Jan-Benedict Glaw]

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On Mon, 2006-04-03 14:41:18 +0100, Jim Ford <jaford@watford53.freeserve.co.uk> wrote:
> Jan-Benedict Glaw wrote:
> >Full ACK. The most scary cases are those where people expect to get
> >
> >high-availability by LVM'ing some IDE disks together.
> >
> >Hey, LVM on MD really is a nice thing, even dm-crypt ontop, works
> >flawlessly :)
> What, you mean Mini Disk - the little magneto optical disks used for 
> personal audio players? What's the advantage in that, aren't they only 
> about a 1 gig storage?

No, Linux' MultiDisk stuff was ment (SoftRAID). You take a bunch of
HDDs, put it to different controllers and configure those *carefully*
after *thinking* to show up as a RAID device. Then you can use LVM
(again, after careful thinking) with these.

MfG, JBG

-- 
Jan-Benedict Glaw       jbglaw@lug-owl.de    . +49-172-7608481             _ O _
"Eine Freie Meinung in  einem Freien Kopf    | Gegen Zensur | Gegen Krieg  _ _ O
 für einen Freien Staat voll Freier Bürger"  | im Internet! |   im Irak!   O O O
ret = do_actions((curr | FREE_SPEECH) & ~(NEW_COPYRIGHT_LAW | DRM | TCPA));

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Re: [linux-lvm] LVM NOT scary!

[Andy Smith]

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On Mon, Apr 03, 2006 at 02:41:18PM +0100, Jim Ford wrote:
> Jan-Benedict Glaw wrote:
> >Hey, LVM on MD really is a nice thing, even dm-crypt ontop, works
> >flawlessly :)
> >
> What, you mean Mini Disk - the little magneto optical disks used for 
> personal audio players? What's the advantage in that, aren't they only 
> about a 1 gig storage?

Assuming you are two days late for an april fools joke, he means the
md driver as in
http://www.google.co.uk/search?q=linux+md

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