Re: gvinum again?

2004-11-15 Thread Matthias Schuendehuette
Hi,

Am Montag, 15. November 2004 19:41 schrieb Paul Mather:
> On Mon, 2004-11-15 at 19:33 +0100, Matthias Schuendehuette wrote:
> > The extension of filesystems on concat plexes works (simply) as
> > advertised... :-) At least *I* had no problems so far.
>
> That's encouraging to hear!  Can you shrink volumes and filesystems
> like you can on, say, AdvFS under Tru64?  That would be really nice.

No, look at the growfs(8) man-page...

But, honestly, my users are only *extending* their space desires...
BTW my operating system too :-)

So, I never had the need to shrink a filesystem. Only that of Windows if 
I want to install FreeBSD additionally :-)
-- 
Ciao/BSD - Matthias

Matthias Schuendehuette , Berlin (Germany)
PGP-Key at  and  ID: 0xDDFB0A5F
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Re: gvinum again?

2004-11-15 Thread Tillman Hodgson
On Mon, Nov 15, 2004 at 07:33:36PM +0100, Matthias Schuendehuette wrote:
> Am Montag, 15. November 2004 18:25 schrieb Paul Mather:
> > [...]
> > I don't know if growfs is 100% robust enough yet to provide the other
> > important ingredient to a true LVM storage management system a la the
> > logical volume manager on AIX or AdvFS on Tru64, say.
> 
> Yes, it is. I use (g)vinum primarily as a LVM with concat plexes on 
> ProLiant Servers with SmartRAID-Controllers, so mirroring and/or RAID5 
> is done in hardware.
> 
> The extension of filesystems on concat plexes works (simply) as 
> advertised... :-) At least *I* had no problems so far.

I can also claim lots of positive experiences with this, though mostly
on 4.X systems (I've only recnetly started to use 5.X systems on more
than a test machine). In my case, I growfs mirrored volumes. I've also
deleted unused volumes (mirrored), moved their subdisks over to another
volume to increase available free space and then run growfs to take
advantage of the new space. It's been problem free for me, and I found
myself taking advantage of volume management to solve disk management
issues (like user home directories).

-T


-- 
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 along to replace Ethernet, it will be called ``Ethernet'', so therefore
 Ethernet will never die. Unix has already undergone several such
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Re: gvinum again?

2004-11-15 Thread Paul Mather
On Mon, 2004-11-15 at 19:33 +0100, Matthias Schuendehuette wrote:
> Hi,
> 
> Am Montag, 15. November 2004 18:25 schrieb Paul Mather:
> > [...]
> > I don't know if growfs is 100% robust enough yet to provide the other
> > important ingredient to a true LVM storage management system a la the
> > logical volume manager on AIX or AdvFS on Tru64, say.
> 
> Yes, it is. I use (g)vinum primarily as a LVM with concat plexes on 
> ProLiant Servers with SmartRAID-Controllers, so mirroring and/or RAID5 
> is done in hardware.
> 
> The extension of filesystems on concat plexes works (simply) as 
> advertised... :-) At least *I* had no problems so far.

That's encouraging to hear!  Can you shrink volumes and filesystems like
you can on, say, AdvFS under Tru64?  That would be really nice.

Cheers,

Paul.
-- 
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 deadlines or dates by which bills must be paid."
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Re: gvinum again?

2004-11-15 Thread Matthias Schuendehuette
Hi,

Am Montag, 15. November 2004 18:25 schrieb Paul Mather:
> [...]
> I don't know if growfs is 100% robust enough yet to provide the other
> important ingredient to a true LVM storage management system a la the
> logical volume manager on AIX or AdvFS on Tru64, say.

Yes, it is. I use (g)vinum primarily as a LVM with concat plexes on 
ProLiant Servers with SmartRAID-Controllers, so mirroring and/or RAID5 
is done in hardware.

The extension of filesystems on concat plexes works (simply) as 
advertised... :-) At least *I* had no problems so far.
-- 
Ciao/BSD - Matthias

Matthias Schuendehuette , Berlin (Germany)
PGP-Key at  and  ID: 0xDDFB0A5F
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Re: gvinum again?

2004-11-15 Thread Paul Mather
On Mon, 2004-11-15 at 02:31 -0500, Zaphod Beeblebrox wrote:
> On Mon, 15 Nov 2004 01:26:54 -0500, Paul Mather <[EMAIL PROTECTED]> wrote:
> 
> > Your observation is correct: it doesn't (yet) load balance across plexes
> > of mirrored volumes; geom_mirror (gmirror) does, though (and offers
> > various load-balancing options).
> 
> Is this something planned for the near future?  I'm migrating legacy
> units here, so I don't really have a choice.

I don't know about the *near* future, but I believe it is on
Lukas' ([EMAIL PROTECTED]) list of things to do.  You'd probably have to
ask him how high it is on the list, though.

> ... also ... I suspect, whatever form it eventually takes, that volume
> management and geom and/or vinum is essential.

I my case I had a legacy root-on-vinum all-mirrored setup, and so was
interested in mirroring more than LVM.  (Like many, I'd used vinum just
as a way of accomplishing a software RAID 1 across two drives to provide
extra tolerance to drive failures.)  So, migrating from geom_vinum to
geom_mirror was not such a burden (or a hurdle).

I don't know if growfs is 100% robust enough yet to provide the other
important ingredient to a true LVM storage management system a la the
logical volume manager on AIX or AdvFS on Tru64, say.

Cheers,

Paul.
-- 
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"Without music to decorate it, time is just a bunch of boring production
 deadlines or dates by which bills must be paid."
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Re: gvinum again?

2004-11-14 Thread Zaphod Beeblebrox
On Mon, 15 Nov 2004 01:26:54 -0500, Paul Mather <[EMAIL PROTECTED]> wrote:

> Your observation is correct: it doesn't (yet) load balance across plexes
> of mirrored volumes; geom_mirror (gmirror) does, though (and offers
> various load-balancing options).

Is this something planned for the near future?  I'm migrating legacy
units here, so I don't really have a choice.

... also ... I suspect, whatever form it eventually takes, that volume
management and geom and/or vinum is essential.
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Re: gvinum again?

2004-11-14 Thread Paul Mather
On Mon, 2004-11-15 at 00:36 -0500, Zaphod Beeblebrox wrote:
> I'm looking at gstat while fsck'ing a gvinum partition.  The trouble
> I'm seeing is that I don't see activity on the second disk.  Now...
> I'm using fsck -n ... just checking things ... so there's no writes,
> but does gvinum not (yet) load balance on reads?

Your observation is correct: it doesn't (yet) load balance across plexes
of mirrored volumes; geom_mirror (gmirror) does, though (and offers
various load-balancing options).

Cheers,

Paul.
-- 
e-mail: [EMAIL PROTECTED]

"Without music to decorate it, time is just a bunch of boring production
 deadlines or dates by which bills must be paid."
--- Frank Vincent Zappa
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gvinum again?

2004-11-14 Thread Zaphod Beeblebrox
I'm looking at gstat while fsck'ing a gvinum partition.  The trouble
I'm seeing is that I don't see activity on the second disk.  Now...
I'm using fsck -n ... just checking things ... so there's no writes,
but does gvinum not (yet) load balance on reads?
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