RE: [Vserver] Vservers and RAID (5 & hard)

I have bad experience with LVM and raid it is near impossible to fix LVM
if you have problems mounting them after a kernel change. LVM is not as
supported in the resucue mode in most distro's CDs

-----Original Message-----
From: vserver-bounces@list.linux-vserver.org
[mailto:vserver-bounces@list.linux-vserver.org] On Behalf Of Chuck
Sent: Wednesday, February 15, 2006 1:35 AM
To: vserver@list.linux-vserver.org
Subject: Re: [Vserver] Vservers and RAID (5 & hard)

On Tuesday 14 February 2006 05:41 pm, John Alberts wrote:

I agree 100% that is what I am using on my vserver host as well and I
have
enough free space unassigned to last several years at this point. LVM2
should
actually become a permanent built-in part of all file systems :) As I
re-do
my home workstations, I am changing them over to LVM2 as well. I will
not
install linux now without it unless it is an extremely specific
installation
that will not allow it (which I have yet to encounter) (romable code is
the
only thing I can think of ).

Chuck

> I recently purchased a Dell PowerEdge 2850 that I'm using for
> vservers. I'm using Gentoo for the host and guests. Seems to work
> really great so far. I purchased 4 10k rpm 73G u320 drives and use
> them in a single raid5 partition. I then used LVM2 to partiion up the

> space.
>
> Here's the output of fdisk -l :
>
> Disk /dev/sda: 219.8 GB, 219823472640 bytes
> 255 heads, 63 sectors/track, 26725 cylinders
> Units = cylinders of 16065 * 512 = 8225280 bytes
>
> Device Boot Start End Blocks Id System
> /dev/sda1 1 12 96358+ de Dell Utility
> /dev/sda2 * 13 21 72292+ 83 Linux
> /dev/sda3 22 508 3911827+ 82 Linux swap /
Solaris
> /dev/sda4 509 26725 210588052+ 5 Extended
> /dev/sda5 509 752 1959898+ 83 Linux
> /dev/sda6 753 26725 208628091 8e Linux LVM
>
> As you can see, I have a partition for /boot, /, and swap. The rest
> is for
LVM.
>
> I then divided up the LVM for the remainder of the system. Here's what

> lvdisplay shows:
>
> --- Logical volume ---
> LV Name /dev/vg/usr
> VG Name vg
> LV UUID **I
> LV Write Access read/write
> LV Status available
> # open 1
> LV Size 10.01 GB
> Current LE 2563
> Segments 1
> Allocation inherit
> Read ahead sectors 0
> Block device 254:0
>
> --- Logical volume ---
> LV Name /dev/vg/home
> VG Name vg
> LV UUID **
> LV Write Access read/write
> LV Status available
> # open 1
> LV Size 5.00 GB
> Current LE 1280
> Segments 1
> Allocation inherit
> Read ahead sectors 0
> Block device 254:1
>
> --- Logical volume ---
> LV Name /dev/vg/opt
> VG Name vg
> LV UUID **
> LV Write Access read/write
> LV Status available
> # open 1
> LV Size 5.00 GB
> Current LE 1280
> Segments 1
> Allocation inherit
> Read ahead sectors 0
> Block device 254:2
>
> --- Logical volume ---
> LV Name /dev/vg/var
> VG Name vg
> LV UUID **
> LV Write Access read/write
> LV Status available
> # open 1
> LV Size 10.00 GB
> Current LE 2560
> Segments 1
> Allocation inherit
> Read ahead sectors 0
> Block device 254:3
>
> --- Logical volume ---
> LV Name /dev/vg/tmp
> VG Name vg
> LV UUID **
> LV Write Access read/write
> LV Status available
> # open 1
> LV Size 2.00 GB
> Current LE 512
> Segments 1
> Allocation inherit
> Read ahead sectors 0
> Block device 254:4
>
> --- Logical volume ---
> LV Name /dev/vg/vservers
> VG Name vg
> LV UUID **
> LV Write Access read/write
> LV Status available
> # open 1
> LV Size 30.00 GB
> Current LE 7680
> Segments 1
> Allocation inherit
> Read ahead sectors 0
> Block device 254:5
>
>
> I still have lots of unused LVM space. I just expand my /vserver
> volume and any others as needed.
>
> Performance is great.
>
> Hope this helps your decision.
>
> On 2/14/06, Lars Hallberg <lah@micropp.se> wrote:
> > Sam Vilain wrote:
> >
> > > I hate that! Such a deep directory... besides, the unix
> > > conventions of var, /usr, etc, were made before this use case was
> > > considered (/com, anyone?). I think it deserves its own TLD (top
> > > level directory).
> >
> > /var/lib/vservers ... Have no problems with that... but i symlink it

> > as 'v' from /root :-) ... and /etc/vservers as 'e' :-)
> >
> > Thats Ubuntu... same as Debian I asume.
> >
> > /LaH
> >
> > _______________________________________________
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> > Vserver@list.linux-vserver.org
> > http://list.linux-vserver.org/mailman/listinfo/vserver
> >
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>

-- 
Chuck
"...and the hordes of M$*ft users descended upon me in their anger, and
asked 'Why do you not get the viruses or the BlueScreensOfDeath or
insecure system troubles and slowness or pay through the nose 
for an OS as *we* do?!!', and I answered...'I use Linux'. "
The Book of John, chapter 1, page 1, and end of book
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