[linux-lvm] Extending a stripped Logical Volume
Olmo González
olmo at olmo.org
Fri Dec 24 12:19:31 UTC 2004
Hi,
I am new to this list, seeking for some help.
I have setup LVM2 under debian sarge (2.6.8-k7 kernel).
I originally created a volumen group (nasvg) on 4 x ST3200822A ATA DISK
drives. I created a stripped logical volume spanning these 4 disks and
using up al PE's available. I then attached two aditional ST3200822A ATA
DISK drives and I would now want to resive my logical volumen to use al
the PE's provided by the two new disks. The problem is I can't extend
the logical volume, getting the following error:
gollum:~# lvextend -L+1G /dev/nasvg/naslv
Using stripesize of last segment 64KB
Extending logical volume naslv to 746.23 GB
Insufficient allocatable extents suitable for parallel use for logical
volume naslv: 191036 required
I have been googl'ing and it seems that this has to do with restrictions
on resizing sttriped LV's. However, the information I have found says
the restrictions no longer apply to LVM2.
Any help would be appreciated. I'm thinking of creating a linear lv
spanning al 6 disks but this would mean backing up ~600gb of data which
could be a pain...
Here is my output for both vgdisplay and lvdisplay.
gollum:~# vgdisplay
--- Volume group ---
VG Name nasvg
System ID
Format lvm2
Metadata Areas 6
Metadata Sequence No 25
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 1
Open LV 1
Max PV 0
Cur PV 6
Act PV 6
VG Size 1.09 TB
PE Size 4.00 MB
Total PE 286168
Alloc PE / Size 190780 / 745.23 GB
Free PE / Size 95388 / 372.61 GB
VG UUID LWqtTF-F8vA-yjXt-AYwK-yFQr-skDa-s9UVRC
--- Logical volume ---
LV Name /dev/nasvg/naslv
VG Name nasvg
LV UUID GMm5PD-6Rdk-h8lG-35Fw-rZp3-L42s-N6k9QC
LV Write Access read/write
LV Status available
# open 1
LV Size 745.23 GB
Current LE 190780
Segments 1
Allocation inherit
Read ahead sectors 0
Block device 254:0
Thanks, and merry Christmas!
Olmo.
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