Re: [Xen-users] Resize domU block device?

[Ralf Müller <ralf@xxxxxxxx>]

Am 19.11.2007 um 17:54 schrieb Errol Neal:

> Quoting Ralf Müller <ralf@xxxxxxxx>:
>
> > Is there a way for a domU to discover size changes of block
> > devices modified by dom0?
> The domU will be aware of the additional space.
Ok - I did it again :)

dom0 > rpm -q xen
xen-3.1.0_15042-51
dom0 > lvdisplay /dev/data0/test-xx
  --- Logical volume ---
  LV Name                /dev/data0/test-xx
  VG Name                data0
  LV UUID                U8e3ZH-xMFZ-TwUf-qpi1-r5Ee-y07c-PtskZe
  LV Write Access        read/write
  LV Status              available
  # open                 0
  LV Size                1.00 GB
  Current LE             256
  Segments               1
  Allocation             inherit
  Read ahead sectors     0
  Block device           253:47

give it to test domU:
disk=[ 'phy:/dev/data0/test-hda,xvda,w',
    'phy:/dev/data0/test-swap,xvdb2,w',
    'phy:/dev/data0/test-xx,xvdc1,w',
]

test > mkfs.xfs /dev/xvdc1
test > mount /dev/xvdc1 /mnt/
test > df /mnt/
Filesystem           1K-blocks      Used Available Use% Mounted on
/dev/xvdc1             1038336       288   1038048   1% /mnt

dom0 > lvresize -L+1G /dev/data0/test-xx
  Extending logical volume test-xx to 2.00 GB
  Logical volume test-xx successfully resized

test > xfs_growfs /mnt/
meta-data=/dev/xvdc1             isize=256    agcount=8, agsize=32768  
blks
         =                       sectsz=512   attr=0
data     =                       bsize=4096   blocks=262144, imaxpct=25
         =                       sunit=0      swidth=0 blks,  
unwritten=1
naming   =version 2              bsize=4096
log      =internal               bsize=4096   blocks=2560, version=1
         =                       sectsz=512   sunit=0 blks, lazy- 
count=0
realtime =none                   extsz=4096   blocks=0, rtextents=0
test > df /mnt/
Filesystem           1K-blocks      Used Available Use% Mounted on
/dev/xvdc1             1038336       288   1038048   1% /mnt

The filesystem is still 1GB. What am I doing wrong?

Regards
Ralf
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