[Libguestfs] Image Not Expanding

[vipul borikar]

On Mon, Jan 31, 2011 at 5:08 PM, Richard W.M. Jones <rjones at redhat.com>wrote:

> On Mon, Jan 31, 2011 at 05:04:04PM +0530, vipul borikar wrote:
> > Debug messages show like this:
> > ***********************************************
> > Fedora12 size 1048576000 bytes
> > Fedora12-1 size 2097152000 bytes
> > copying boot loader ...
> > add_drive_ro "Fedora12"
> > add_drive "Fedora12-1"
> > launch
> > Warning: No DNS servers found
> > Could not open '/dev/kqemu' - QEMU acceleration layer not activated: No
> such
> > file or directory
> > blockdev_getss "/dev/sdb"
> > part_list "/dev/sda"
> > part_get_bootable "/dev/sda" 1
> > part_get_mbr_id "/dev/sda" 1
> > part_get_bootable "/dev/sda" 2
> > part_get_mbr_id "/dev/sda" 2
> > pvs_full
> > vfs_type "/dev/sda1"
> > mount_ro "/dev/sda1" "/"
> > statvfs "/"
> > umount_all
> > vfs_type "/dev/sda2"
> > mount_ro "/dev/sda2" "/"
> > umount_all
> > partitions found: /dev/sda1, /dev/sda2
> > /dev/sda1:
> >         bootable = 1
> >         fssize = 928866304
> >         mbr_id = 131
> >         name = /dev/sda1
> >         part_end = 943750655
> >         part_num = 1
> >         part_size = 943718400
> >         part_start = 32256
> >         type = ext3
> > /dev/sda2:
> >         bootable = 0
> >         fssize = undef
> >         mbr_id = 130
> >         name = /dev/sda2
> >         part_end = 996179455
> >         part_num = 2
> >         part_size = 52428800
> >         part_start = 943750656
> >         type = swap
> > surplus before --expand or --shrink: 1098776576 (1.0G)
> > Summary of changes:
> > /dev/sda1: partition will be resized from 900.0M to 1.9G
> > /dev/sda2: partition will be left alone
> > part_get_parttype "/dev/sdb"
> > partition table type: msdos
> > list_partitions
> > part_del "/dev/sdb" 2
> > part_del "/dev/sdb" 1
> > starting to partition from 64
> > part_add "/dev/sdb" "primary" 64 3989311
> > part_set_bootable "/dev/sdb" 1 true
> > part_set_mbr_id "/dev/sdb" 1 131
> > part_add "/dev/sdb" "primary" 3989312 4091711
> > part_set_mbr_id "/dev/sdb" 2 130
> > copy_size "/dev/sda1" "/dev/sdb1" 943718400
> > copy_size "/dev/sda2" "/dev/sdb2" 52428800
> > umount_all
> > sync
> > kill_subprocess
> > *********************************************************************
> [...]
>
> The debug output all looks fine.
>
> What does the partition table look like from within the resized
> guest?  (ie. fdisk -l ...)
>

fdisk -l gives like this

[root at localhost ~]# fdisk -l

Disk /dev/xvda: 2097 MB, 2097152000 bytes
255 heads, 63 sectors/track, 254 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x000dada5

    Device Boot      Start         End      Blocks   Id  System
/dev/xvda1   *           1         249     1994624   83  Linux
Partition 1 does not end on cylinder boundary.
/dev/xvda2             249         255       51200   82  Linux swap /
Solaris
Partition 2 does not end on cylinder boundary.
[root at localhost ~]# df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/xvda1            886M  684M  158M  82% /
tmpfs                 263M     0  263M   0% /dev/shm


It looks like it has increased the disk size.

but df shows old size

[root at localhost ~]# df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/xvda1          886M  684M  158M  82% /
tmpfs                 263M     0  263M   0% /dev/shm


Do we have to manually do something inside the VM .

>
> > One more thing i am able to boot the new image but not able to mount it.
>
> Did you see this problem?
>
> http://libguestfs.org/virt-resize.1.html#guest_boot_stuck_at_grub
>
> Rich.
>

Grub is having no problem at all it works fine only that i am not able to
mount it:

mount -o loop,offset=32256 Fedora12-1 /mnt/disk1/

    mount: you must specify the filesystem type



Thanks
Vipul
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