08-25-2010
I/O error?
Dear All
I tried to make an raw image from the solaris8 working machine /opt
folder to be imported to my qemu-system-sparc running solaris26 by :
#dd if=/dev/dsk/c0t0d0s3 of=/usr01/opt8.disk
Then I converted this raw image to qcow format by :
C:\qemu-img.exe convert -O qcow opt8.disk opt8.qcow
At now, It is imported to qemu as its second virtual disk. But when I
try to list its contents it is returning 'I/O error' for some of the
folders inside it. Do you think there is some error in that 'dd'
procedure?
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LEARN ABOUT CENTOS
qemu-nbd
QEMU-NBD(8) QEMU-NBD(8)
NAME
qemu-nbd - QEMU Disk Network Block Device Server
SYNOPSIS
usage: qemu-nbd [OPTION]... filename
DESCRIPTION
Export QEMU disk image using NBD protocol.
OPTIONS
filename
is a disk image filename
-p, --port=port
port to listen on (default B<1024>)
-o, --offset=offset
offset into the image
-b, --bind=iface
interface to bind to (default B<0.0.0.0>)
-k, --socket=path
Use a unix socket with path I<path>
-r, --read-only
export read-only
-P, --partition=num
only expose partition I<num>
-s, --snapshot
use snapshot file
-n, --nocache
--cache=cache
set cache mode to be used with the file. See the documentation of
the emulator's C<-drive cache=...> option for allowed values.
--aio=aio
choose asynchronous I/O mode between B<threads> (the default)
and B<native> (Linux only).
--discard=discard
toggles whether I<discard> (also known as I<trim> or I<unmap>)
requests are ignored or passed to the filesystem. The default is no
(B<--discard=ignore>).
-c, --connect=dev
connect I<filename> to NBD device I<dev>
-d, --disconnect
disconnect the specified device
-e, --shared=num
device can be shared by I<num> clients (default B<1>)
-f, --format=fmt
force block driver for format I<fmt> instead of auto-detecting
-t, --persistent
don't exit on the last connection
-v, --verbose
display extra debugging information
-h, --help
display this help and exit
-V, --version
output version information and exit
SEE ALSO
qemu-img(1)
AUTHOR
Copyright (C) 2006 Anthony Liguori <anthony@codemonkey.ws>. This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
2014-06-10 QEMU-NBD(8)