Hello everybody,
I''m playing with Xen and trying to extend DomU disk space.
My Configuration:
Dom0: all Xen machine are HVM. They''re installed on LVM.
I''ve one VG (XEN) on Dom0 and created a LV (here, xps.101.disk) per
DomU.
disk configuration in xen conf is as follow:
disk = [
''phy:/dev/XEN/xps.%d.disk,ioemu:hda,w'' %
(vmid)
]
Where vmid is a parameter given to xm create.
All work pretty well but resize2fs.
Increasing DomU disk size consists in lvextend. That has been done.
Rebooting DomU gives me additionnal free space on virtual disk.
Here''s currently what I have:
From Dom0:
## lvdisplay /dev/XEN/xps.101.disk
# --- Logical volume ---
# LV Name /dev/XEN/xps.101.disk
# VG Name XEN
# LV UUID CKJ6N0-Hf7r-eMiP-GLxb-MNqp-4fB2-ac3VsF
# LV Write Access read/write
# LV Status available
# # open 2
# LV Size 10,00 GB
# Current LE 2560
# Segments 1
# Allocation inherit
# Read ahead sectors auto
# - currently set to 256
# Block device 254:0
From DomU
## fdisk -l /dev/hda
#
#Disk /dev/hda: 10.7 GB, 10737418240 bytes
#255 heads, 63 sectors/track, 1305 cylinders
#Units = cylinders of 16065 * 512 = 8225280 bytes
#
# Device Boot Start End Blocks Id System
#/dev/hda1 * 1 336 2698888+ 83 Linux
#/dev/hda2 337 1174 6731235 5 Extended
#/dev/hda5 337 381 361431 82 Linux swap /
#Solaris
#/dev/hda6 382 1174 6369741 83 Linux
So I can see additionnal space, but resize2fs /dev/hda6 7G failed:
## resize2fs /dev/hda6 7G
#resize2fs 1.40-WIP (14-Nov-2006)
#La partition (ou le périphérique) n''a seulement que 1592435 (4k)
blocs.
#Vous avez demandé une nouvelle taille de 1835008 blocs.
In english, partition (or device) only have 1592435 (4k) blocks.
You requested new size of 1835008 blocks.
Any idea to get it working ?
Thanks,
JB
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Jean Baptiste FAVRE wrote:> Hello everybody, > I''m playing with Xen and trying to extend DomU disk space. > > My Configuration: > Dom0: all Xen machine are HVM. They''re installed on LVM. > I''ve one VG (XEN) on Dom0 and created a LV (here, xps.101.disk) per DomU. > > disk configuration in xen conf is as follow: > disk = [ > ''phy:/dev/XEN/xps.%d.disk,ioemu:hda,w'' % (vmid) > ] > Where vmid is a parameter given to xm create. > All work pretty well but resize2fs. > > Increasing DomU disk size consists in lvextend. That has been done. > Rebooting DomU gives me additionnal free space on virtual disk. > > Here''s currently what I have: > From Dom0: > ## lvdisplay /dev/XEN/xps.101.disk > # --- Logical volume --- > # LV Name /dev/XEN/xps.101.disk > # VG Name XEN > # LV UUID CKJ6N0-Hf7r-eMiP-GLxb-MNqp-4fB2-ac3VsF > # LV Write Access read/write > # LV Status available > # # open 2 > # LV Size 10,00 GB > # Current LE 2560 > # Segments 1 > # Allocation inherit > # Read ahead sectors auto > # - currently set to 256 > # Block device 254:0 > > From DomU > ## fdisk -l /dev/hda > # > #Disk /dev/hda: 10.7 GB, 10737418240 bytes > #255 heads, 63 sectors/track, 1305 cylinders > #Units = cylinders of 16065 * 512 = 8225280 bytes > # > # Device Boot Start End Blocks Id System > #/dev/hda1 * 1 336 2698888+ 83 Linux > #/dev/hda2 337 1174 6731235 5 Extended > #/dev/hda5 337 381 361431 82 Linux swap / > #Solaris > #/dev/hda6 382 1174 6369741 83 Linux > > So I can see additionnal space, but resize2fs /dev/hda6 7G failed: > > ## resize2fs /dev/hda6 7G > #resize2fs 1.40-WIP (14-Nov-2006) > #La partition (ou le périphérique) n''a seulement que 1592435 (4k) blocs. > #Vous avez demandé une nouvelle taille de 1835008 blocs. > > In english, partition (or device) only have 1592435 (4k) blocks. > You requested new size of 1835008 blocks. > > > Any idea to get it working ?From what I see, it looks like you are trying to resize the file system on /dev/hda6 to be 7GB but, from looking at the size of the partition from fdisk, the partition is only about 6GB. I might be wrong on my math but it is only 8225280 * (1174 - 382) bytes, or, 6514421760 bytes. What I would try to do is just do ''resize2fs /dev/hda6''. Leave off the size at the end. In that case, resize2fs will just expand the filesystem to use the full size of whatever partition it is on. There is one idea. Mike _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
2008/11/9 Jean Baptiste FAVRE <jean.baptiste.favre@gmail.com>> From DomU > ## fdisk -l /dev/hda > # > #Disk /dev/hda: 10.7 GB, 10737418240 bytes > #255 heads, 63 sectors/track, 1305 cylinders > #Units = cylinders of 16065 * 512 = 8225280 bytes > # > # Device Boot Start End Blocks Id System > #/dev/hda1 * 1 336 2698888+ 83 Linux > #/dev/hda2 337 1174 6731235 5 Extended > #/dev/hda5 337 381 361431 82 Linux swap / > #Solaris > #/dev/hda6 382 1174 6369741 83 Linux >You can see here that the last cylinder of your disk (1305) differs from the last cylinder of your last and extended partitions (1174), the difference is the volume you added. For this additional space to be taken into account at the partition level, you have to remove the hda2 and hda6 partitions, then recreate them giving the correct last cylinder. After that resize2fs will work.> > > Any idea to get it working ? > > Thanks, > JB > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xensource.com > http://lists.xensource.com/xen-users >_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users