如何在 CentOS 7 中挂载 .VDI 文件？
我正在尝试将 .vdi 硬盘驱动器从另一个 VirtualBox 实例加载到另一个 VirtualBox 实例中。我想浏览并复制 .vdi 文件中的文件。
第一次尝试时，我将 .vdi 转换为原始格式：
VBoxManage clonehd --format RAW centoOS7Python3p9_tmp-disk1.vdi centoOS7Python3p9_tmp-disk1.img
然后尝试挂载镜像：
mount -t xfs -o loop,rw ./centoOS7Python3p9_tmp-disk1.img /mnt
我收到错误：
mount: wrong fs type, bad option, bad superblock on /dev/loop0,
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
dmesg | tail or so.
我尝试了不同的安装方式，但没有取得任何进展。一篇帖子说需要抵消，但这也不起作用。
在第二次尝试时，我尝试了 qemu-nbd
touch /dev/nbd1
qemu-nbd -c /dev/nbd1 ./centoOS7Python3p9_tmp-disk1.vdi
我收到错误：
nbd.c:nbd_init():L611: Failed to set NBD socket
如果我尝试：
modprobe nbd max_part=8
我收到错误：
modprobe: FATAL: Module nbd not found.
我读到 CentOS 已禁用 nbd 支持，但我不知道如何启用 nbd。
在第三次尝试时，我使用 guestmount：
guestmount -a ./centoOS7Python3p9_tmp-disk1.vdi -i --ro /dev/oldHd
我收到错误：
libguestfs: error: could not create appliance through libvirt.
Try running qemu directly without libvirt using this environment variable:
export LIBGUESTFS_BACKEND=direct
Original error from libvirt: Cannot access backing file '/home/brian/centoOS7Python3p9_tmp-disk1.vdi' of storage file '/tmp/libguestfs9LUDJB/overlay1.qcow2' (as uid:107, gid:107): Permission denied [code=38 int1=13]
当我尝试“ export LIBGUESTFS_BACKEND=direct”时出现错误：
guestmount -a ./centoOS7Python3p9_tmp-disk1.vdi -i --ro /dev/oldHd
libguestfs: error: appliance closed the connection unexpectedly.
This usually means the libguestfs appliance crashed.
Do:
export LIBGUESTFS_DEBUG=1 LIBGUESTFS_TRACE=1
and run the command again. For further information, read:
http://libguestfs.org/guestfs-faq.1.html#debugging-libguestfs
You can also run 'libguestfs-test-tool' and post the *complete* output
into a bug report or message to the libguestfs mailing list.
libguestfs: error: guestfs_launch failed.
This usually means the libguestfs appliance failed to start or crashed.
Do:
export LIBGUESTFS_DEBUG=1 LIBGUESTFS_TRACE=1
and run the command again. For further information, read:
http://libguestfs.org/guestfs-faq.1.html#debugging-libguestfs
You can also run 'libguestfs-test-tool' and post the *complete* output
into a bug report or message to the libguestfs mailing list.