Re: [linux-lvm] How do I find out if my logic volume is striped or not?

[Eric Wang <mrlist@ActiveState.com>]

I am trying to achive the best performance
here is my situation

#vgdisplay -v
--- Volume group ---
VG Name               TITAN
VG Access             read/write
VG Status             available/resizable
VG #                  0
MAX LV                256
Cur LV                1
Open LV               0
MAX LV Size           255.99 GB
Max PV                256
Cur PV                3
Act PV                3
VG Size               98.65 GB
PE Size               4 MB
Total PE              25255
Alloc PE / Size       19482 / 76.1 GB
Free  PE / Size       5773 / 22.55 GB
VG UUID               c2I7Km-QuZy-O3GK-nUXL-WtAC-VHRO-r75ivY

--- Logical volume ---
LV Name                /dev/TITAN/home
VG Name                TITAN
LV Write Access        read/write
LV Status              available
LV #                   1
# open                 0
LV Size                76.1 GB
Current LE             19482
Allocated LE           19482
Stripes                2
Stripe size (KByte)    4
Allocation             next free
Read ahead sectors     120
Block device           58:0


--- Physical volumes ---
PV Name (#)           /dev/hda9 (3)
PV Status             available / allocatable
Total PE / Free PE    5649 / 5649

PV Name (#)           /dev/hdb1 (1)
PV Status             available / allocatable
Total PE / Free PE    9803 / 63

PV Name (#)           /dev/hdc1 (2)
PV Status             available / allocatable
Total PE / Free PE    9803 / 63

I am trying to create stripped lv here, how I am going to do that?

anyway an odd problem is after create a stripped lv then vgextent the vg
with /dev/hda9, but I can't lvextent the lv 
# lvextend -L+20G /dev/TITAN/home
lvextend -- extending logical volume "/dev/TITAN/home" to 96.1 GB
lvextend -- not enough free/allocatable physical extents to extend logical volume "/dev/TITAN/home"

what was the problem?


On Thu, 31 May 2001 14:34:57 +0200
"Heinz J. Mauelshagen" <Mauelshagen@sistina.com> wrote:

> 
> Eric,
> 
> lvdisplay shows lines beginning with "Stripes" and "Stripe size (KByte)"
> in case you use it on a striped LV and /proc/lvm/global displays 
> information as well.
> 
> On Wed, May 30, 2001 at 07:11:36PM -0700, Eric Wang wrote:
> > Hi all,
> > 
> > How do I find out if my logic volume is striped or not?
> > lvdisplay seems not produce this information.
> > 
> > Thanks 
> > _______________________________________________
> > linux-lvm mailing list
> > linux-lvm@sistina.com
> > http://lists.sistina.com/mailman/listinfo/linux-lvm
> > read the LVM HOW-TO at http://www.sistina.com/lvm/Pages/howto.html
> 
> -- 
> 
> Regards,
> Heinz    -- The LVM Guy --
> 
> *** Software bugs are stupid.
>     Nevertheless it needs not so stupid people to solve them ***
> 
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> 
> Heinz Mauelshagen                                 Sistina Software Inc.
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