[gentoo-dev] punt raidtools and move people to mdadm

[gentoo-dev] punt raidtools and move people to mdadm

[Mike Frysinger]

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anyone have a compelling reason for keeping raidtools anymore ?  the mdadm 
package replaces all the functionality of raidtools and is actively 
maintained upstream

ive kept it around mostly so people can transition to mdadm nicely but i think 
it's about time we let it go
-mike

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Re: [gentoo-dev] punt raidtools and move people to mdadm

[Wolfram Schlich]

* Mike Frysinger <vapier@gentoo.org> [2007-02-10 03:15]:
> anyone have a compelling reason for keeping raidtools anymore ?  the mdadm 
> package replaces all the functionality of raidtools and is actively 
> maintained upstream
> 
> ive kept it around mostly so people can transition to mdadm nicely but i think 
> it's about time we let it go

/vote yes
-- 
Regards,
Wolfram Schlich <wschlich@gentoo.org>
Gentoo Linux * http://dev.gentoo.org/~wschlich/
-- 
gentoo-dev@gentoo.org mailing list

[gentoo-dev] Re: punt raidtools and move people to mdadm

[Duncan]

Mike Frysinger <vapier@gentoo.org> posted
200702092114.21371.vapier@gentoo.org, excerpted below, on  Fri, 09 Feb
2007 21:14:20 -0500:

> anyone have a compelling reason for keeping raidtools anymore ?  the
> mdadm package replaces all the functionality of raidtools and is
> actively maintained upstream
> 
> ive kept it around mostly so people can transition to mdadm nicely but i
> think it's about time we let it go

+1.  Anything that makes the path for the patch in
http://bugs.gentoo.org/show_bug.cgi?id=123380 (support for
partitioned/mdp RAID) easier is fine by me. =8^)

-- 
Duncan - List replies preferred.   No HTML msgs.
"Every nonfree program has a lord, a master --
and if you use the program, he is your master."  Richard Stallman

-- 
gentoo-dev@gentoo.org mailing list

Re: [gentoo-dev] punt raidtools and move people to mdadm

[Thilo Bangert]

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> ive kept it around mostly so people can transition to mdadm nicely but
> i think it's about time we let it go

+1
a gentle push in the right direction can only be a good thing.

> -mike

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Re: [gentoo-dev] punt raidtools and move people to mdadm

[Mike Doty]

Mike Frysinger wrote:
> anyone have a compelling reason for keeping raidtools anymore ?  the mdadm 
> package replaces all the functionality of raidtools and is actively 
> maintained upstream
> 
> ive kept it around mostly so people can transition to mdadm nicely but i think 
> it's about time we let it go
> -mike
Do we have documentation on howto migrate?  Thats the big thing holding 
me back(afaik, I have to backup, wipe the disks and then do mdadm and 
restore)

--Taco
-- 
gentoo-dev@gentoo.org mailing list

Re: [gentoo-dev] punt raidtools and move people to mdadm

[Mike Frysinger]

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On Saturday 10 February 2007, Mike Doty wrote:
> Do we have documentation on howto migrate?  Thats the big thing holding
> me back(afaik, I have to backup, wipe the disks and then do mdadm and
> restore)

erm, no ... you dont need to do anything remotely close to this

raidtools/mdadm are just userspace utilities to tell the kernel to "start up 
this raid" ... there is nothing specific to either of these in your raid 
device

migration would involve changing your /etc/raidtab to /etc/mdadm.conf 
(assuming the default scan of mdadm didnt detect all your raids properly)
-mike

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Re: [gentoo-dev] punt raidtools and move people to mdadm

[Joerg Bornkessel]

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> Mike Frysinger wrote:
>> anyone have a compelling reason for keeping raidtools anymore ?  the mdadm 
>> package replaces all the functionality of raidtools and is actively 
>> maintained upstream
>> 
>> ive kept it around mostly so people can transition to mdadm nicely but i think 
>> it's about time we let it go
>> -mike
> Do we have documentation on howto migrate?  Thats the big thing holding
> me back(afaik, I have to backup, wipe the disks and then do mdadm and
> restore)

Hmmmm....

another case for my
PORTDIR_OVERLAY=/usr/local/portage

:(

-- 
Joerg Bornkessel
mailto:hd_brummy@gentoo.org

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Re: [gentoo-dev] punt raidtools and move people to mdadm

[Chris Gianelloni]

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On Sat, 2007-02-10 at 23:39 -0500, Mike Frysinger wrote:
> On Saturday 10 February 2007, Mike Doty wrote:
> > Do we have documentation on howto migrate?  Thats the big thing holding
> > me back(afaik, I have to backup, wipe the disks and then do mdadm and
> > restore)
> 
> erm, no ... you dont need to do anything remotely close to this
> 
> raidtools/mdadm are just userspace utilities to tell the kernel to "start up 
> this raid" ... there is nothing specific to either of these in your raid 
> device
> 
> migration would involve changing your /etc/raidtab to /etc/mdadm.conf 
> (assuming the default scan of mdadm didnt detect all your raids properly)

If we're going to do this, should we do it before the 2007.0 snapshot,
so people don't have raidtools disappear out from under them on their
newly-installed system?

Also, is mdadm.conf 100% compatible with /etc/raidtab?  I've only
minimal familiarity with mdadm on Red Hat, and Anaconda/Kickstart does
all the heavy lifting for me, so I've not used it much.

-- 
Chris Gianelloni
Release Engineering Strategic Lead
Alpha/AMD64/x86 Architecture Teams
Games Developer/Council Member/Foundation Trustee
Gentoo Foundation

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Re: [gentoo-dev] punt raidtools and move people to mdadm

[Mike Frysinger]

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On Monday 12 February 2007, Chris Gianelloni wrote:
> If we're going to do this, should we do it before the 2007.0 snapshot,
> so people don't have raidtools disappear out from under them on their
> newly-installed system?

it's already been done

> Also, is mdadm.conf 100% compatible with /etc/raidtab?

they are 0% compatible
-mike

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Re: [gentoo-dev] punt raidtools and move people to mdadm

[Chris Gianelloni]

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On Mon, 2007-02-12 at 08:58 -0500, Mike Frysinger wrote:
> On Monday 12 February 2007, Chris Gianelloni wrote:
> > If we're going to do this, should we do it before the 2007.0 snapshot,
> > so people don't have raidtools disappear out from under them on their
> > newly-installed system?
> 
> it's already been done
> 
> > Also, is mdadm.conf 100% compatible with /etc/raidtab?
> 
> they are 0% compatible

Then what is the migration path?  You made it sound like copying the
file was the solution.

-- 
Chris Gianelloni
Release Engineering Strategic Lead
Alpha/AMD64/x86 Architecture Teams
Games Developer/Council Member/Foundation Trustee
Gentoo Foundation

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Re: [gentoo-dev] punt raidtools and move people to mdadm

[Mike Frysinger]

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On Monday 12 February 2007, Chris Gianelloni wrote:
> Then what is the migration path?  You made it sound like copying the
> file was the solution.

if the default mdadm scan does not automatically detect their raid devices, 
then the user needs to manually define their raid devices in /etc/mdadm.conf

so the migration path is to edit /etc/mdadm.conf and read the extensive 
comments in there
-mike

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Re: [gentoo-dev] punt raidtools and move people to mdadm

[William L. Thomson Jr.]

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On Mon, 2007-02-12 at 11:13 -0500, Mike Frysinger wrote:
> On Monday 12 February 2007, Chris Gianelloni wrote:
> > Then what is the migration path?  You made it sound like copying the
> > file was the solution.
> 
> if the default mdadm scan does not automatically detect their raid devices, 
> then the user needs to manually define their raid devices in /etc/mdadm.conf
> 
> so the migration path is to edit /etc/mdadm.conf and read the extensive 
> comments in there

Migration is from my experience painless. Even if detecting does not
work, the mdadm.conf syntax is easier IMHO.

However a nice little guide or doc on it, should cover and address most
all user issues stemming from migration. If such a document does not
already exist somewhere on g.o.

No worries, or complaints here if raidtools is punted. From most
everything I have read over the years. Most all are going that direction
if they have not already.

-- 
William L. Thomson Jr.
Gentoo/Java

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Re: [gentoo-dev] punt raidtools and move people to mdadm

[Josh Saddler]

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William L. Thomson Jr. wrote:
> Migration is from my experience painless. Even if detecting does not
> work, the mdadm.conf syntax is easier IMHO.
> 
> However a nice little guide or doc on it, should cover and address most
> all user issues stemming from migration. If such a document does not
> already exist somewhere on g.o.

Although such a document might be better placed somewhere in a /proj/
webspace (this is debatable), if you really want to....

Feel free to write up such a guide and submit it to the GDP. Especially
the bit about addressing all user issues. We're up to our eyebrows in
requests for documentation, but no one bothers to ever send in anything,
even a plain .txt file in. Quite honestly, I (personally) am a little
tired of requests for docs but no technical information, procedures,
etc. is given. Contrary to any popular opinion that may float around, we
aren't omniscient, nor do we know something about everything. If you
want a guide, please send in something useful. No, it doesn't need to be
in guidexml! (We do that for you.)

> No worries, or complaints here if raidtools is punted. From most
> everything I have read over the years. Most all are going that direction
> if they have not already.

mdadm > raidtools! I'm quite happy to see it go.



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Re: [gentoo-dev] punt raidtools and move people to mdadm

[Mike Frysinger]

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On Monday 12 February 2007, William L. Thomson Jr. wrote:
> Migration is from my experience painless. Even if detecting does not
> work, the mdadm.conf syntax is easier IMHO.

and the comments in mdadm.conf explain the most common cases pretty clearly

> However a nice little guide or doc on it, should cover and address most
> all user issues stemming from migration. If such a document does not
> already exist somewhere on g.o.

i use these tools in passing with some simple software raid setups ... 
anything that really needs raid uses hardware raid so i dont have real 
experience with the tool
-mike

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