[linux-lvm] Removal of PV

[linux-lvm] Removal of PV

[hail narcissus]

I know this has been asked before and I browsed the archives for the info.  
But I want to be sure since I am dealing with 500+GB of data.

Here is my configuration:
hda-h (80Gig IDE's)
sda-n (9Gig SCSI's)
652.81 GB VG
505GB Used 140GB Free

I want to remove the SCSI drives since I am having some SCSI bus problems 
and they are just old and I am not feeling comfortable with it's 
reliability.

I believe this would be the proper steps:

resize2fs /dev/lv/vg 520G  <-- Is 520G correct, particularly the G.
pvmove /dev/sda /dev/hdh   <-- Assuming /dev/hdh has free space
pvmove /dev/sdb /dev/hdh
pvmove /dev/sdc /dev/hdh
...
lvreduce -L 520G /dev/lv/vg
vgreduce vg /dev/sda
vgreduce vg /dev/sdb
vgreduce vg /dev/sdc

I saw in the mailing list where someone suggested:

ext2resize/resize2fs
lvreduce
pvmove
vgreduce

But I would think you would want to do pvmove before the lvreduce.  
Otherwise you might truncate data?

Thanks for any help!!
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Re: [linux-lvm] Removal of PV

[Patrick Caulfield]

On Mon, Apr 16, 2001 at 02:50:07PM -0700, hail narcissus wrote:
> 
> I know this has been asked before and I browsed the archives for the info.  
> But I want to be sure since I am dealing with 500+GB of data.
> 
> Here is my configuration:
> hda-h (80Gig IDE's)
> sda-n (9Gig SCSI's)
> 652.81 GB VG
> 505GB Used 140GB Free
> 
> I want to remove the SCSI drives since I am having some SCSI bus problems 
> and they are just old and I am not feeling comfortable with it's 
> reliability.
> 
> I believe this would be the proper steps:
> 
> resize2fs /dev/lv/vg 520G  <-- Is 520G correct, particularly the G.
> pvmove /dev/sda /dev/hdh   <-- Assuming /dev/hdh has free space
> pvmove /dev/sdb /dev/hdh
> pvmove /dev/sdc /dev/hdh
> ...
> lvreduce -L 520G /dev/lv/vg
> vgreduce vg /dev/sda
> vgreduce vg /dev/sdb
> vgreduce vg /dev/sdc
> 
> I saw in the mailing list where someone suggested:
> 
> ext2resize/resize2fs
> lvreduce
> pvmove
> vgreduce
> 
> But I would think you would want to do pvmove before the lvreduce.  
> Otherwise you might truncate data?

Either way round should be fine. If you're using <beta7 then, due to bugs, you
should take the volume offline before moving it though.

patrick

Re: [linux-lvm] Removal of PV

[hail narcissus]

Thanks, thought no one was going to reply.  :)

I'll back up more critical data and try this weekend.

>From: Patrick Caulfield <caulfield@sistina.com>
>Reply-To: linux-lvm@sistina.com
>To: linux-lvm@sistina.com
>Subject: Re: [linux-lvm] Removal of PV
>Date: Fri, 20 Apr 2001 11:29:23 +0100
>
>On Mon, Apr 16, 2001 at 02:50:07PM -0700, hail narcissus wrote:
> >
> > I know this has been asked before and I browsed the archives for the 
>info.
> > But I want to be sure since I am dealing with 500+GB of data.
> >
> > Here is my configuration:
> > hda-h (80Gig IDE's)
> > sda-n (9Gig SCSI's)
> > 652.81 GB VG
> > 505GB Used 140GB Free
> >
> > I want to remove the SCSI drives since I am having some SCSI bus 
>problems
> > and they are just old and I am not feeling comfortable with it's
> > reliability.
> >
> > I believe this would be the proper steps:
> >
> > resize2fs /dev/lv/vg 520G  <-- Is 520G correct, particularly the G.
> > pvmove /dev/sda /dev/hdh   <-- Assuming /dev/hdh has free space
> > pvmove /dev/sdb /dev/hdh
> > pvmove /dev/sdc /dev/hdh
> > ...
> > lvreduce -L 520G /dev/lv/vg
> > vgreduce vg /dev/sda
> > vgreduce vg /dev/sdb
> > vgreduce vg /dev/sdc
> >
> > I saw in the mailing list where someone suggested:
> >
> > ext2resize/resize2fs
> > lvreduce
> > pvmove
> > vgreduce
> >
> > But I would think you would want to do pvmove before the lvreduce.
> > Otherwise you might truncate data?
>
>Either way round should be fine. If you're using <beta7 then, due to bugs, 
>you
>should take the volume offline before moving it though.
>
>patrick
>
>_______________________________________________
>linux-lvm mailing list
>linux-lvm@sistina.com
>http://lists.sistina.com/mailman/listinfo/linux-lvm

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Re: [linux-lvm] Removal of PV

[Rupert Heesom]

On 20 Apr 2001 11:29:23 +0100, Patrick Caulfield wrote:
> On Mon, Apr 16, 2001 at 02:50:07PM -0700, hail narcissus wrote:
> Either way round should be fine. If you're using <beta7 then, due to bugs, you
> should take the volume offline before moving it though.

I'm new to LVM, and trying to get used to how to use it.
You mentioned taking the volume offline.  How is that done?
 

-- 
regs
rupert

Re: [linux-lvm] Removal of PV

[Ben Lutgens]

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On Mon, Apr 30, 2001 at 08:59:30AM -0400, Rupert Heesom wrote:
>I'm new to LVM, and trying to get used to how to use it.
>You mentioned taking the volume offline.  How is that done?
> 

http://www.sistina.com/lvm/doc/lvm_howto/index.html

-- 
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