I seem to be having trouble using guestmount to mount a Fedora 24 disk that is
using XFS. This is the error messings I get when I try:
root@cpdev-cn5:/var/lib/libvirt/images/base# guestmount --rw -a
${disk_path}/${disk_name} -m /dev/${target}1 /tmp/fedora-master/
libguestfs: error: mount_options: /dev/vda1 on /: mount: wrong fs type, bad
option, bad superblock on /dev/vda1,
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
dmesg | tail or so
guestmount: '/dev/sda1' could not be mounted. Did you mean one of
these?
/dev/sda1 (xfs)
Verbose output shows:
libguestfs: recv_from_daemon: received GUESTFS_LAUNCH_FLAG
libguestfs: [03647ms] appliance is up
libguestfs: send_to_daemon: 72 bytes: 00 00 00 44 | 20 00 f5 f5 | 00 00 00 04 |
00 00 00 4a | 00 00 00 00 | ...
guestfsd: main_loop: new request, len 0x44
/dev/sda1: No such file or directory
mount -o /dev/vda1 /sysroot/
[ 1.759120] SGI XFS with ACLs, security attributes, realtime, large
block/inode numbers, no debug enabled
[ 1.762869] XFS (vda1): Version 5 superblock detected. This kernel has
EXPERIMENTAL support enabled!
[ 1.762869] Use of these features in this kernel is at your own risk!
[ 1.764819] XFS (vda1): Superblock has unknown read-only compatible features
(0x1) enabled.
[ 1.765834] XFS (vda1): Attempted to mount read-only compatible filesystem
read-write.
[ 1.765834] Filesystem can only be safely mounted read only.
[ 1.767472] XFS (vda1): SB validate failed with error 22.
mount: wrong fs type, bad option, bad superblock on /dev/vda1,
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
dmesg | tail or so
guestfsd: error: /dev/vda1 on /: mount: wrong fs type, bad option, bad
superblock on /dev/vda1,
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
dmesg | tail or so
guestfsd: main_loop: proc 74 (mount_options) took 0.09 seconds
libguestfs: recv_from_daemon: 272 bytes: 20 00 f5 f5 | 00 00 00 04 | 00 00 00 4a
| 00 00 00 01 | 00 12 34 00 | ...
libguestfs: error: mount_options: /dev/vda1 on /: mount: wrong fs type, bad
option, bad superblock on /dev/vda1,
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
dmesg | tail or so
I've tried with both /dev/sda1 and /dev/vda1 but no luck. Interestingly
enough, a CentOS 7.2 image with XFS and the same setup (i.e., a single partition
formatted with XFS) mounts without issue. Any ideas?
Andre Goree
Senior Engineer, Atlantic.Net
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Richard W.M. Jones
2016-Aug-08 07:21 UTC
Re: [libvirt-users] Cannot guestmount a Fedora 24 XFS disk.
On Fri, Aug 05, 2016 at 02:46:11PM +0000, Andre Goree wrote:> > I seem to be having trouble using guestmount to mount a Fedora 24 disk that is using XFS. This is the error messings I get when I try: > > root@cpdev-cn5:/var/lib/libvirt/images/base# guestmount --rw -a ${disk_path}/${disk_name} -m /dev/${target}1 /tmp/fedora-master/ > libguestfs: error: mount_options: /dev/vda1 on /: mount: wrong fs type, bad option, bad superblock on /dev/vda1, > missing codepage or helper program, or other error > In some cases useful info is found in syslog - try > dmesg | tail or so > guestmount: '/dev/sda1' could not be mounted. Did you mean one of these? > /dev/sda1 (xfs) > > > > Verbose output shows: > libguestfs: recv_from_daemon: received GUESTFS_LAUNCH_FLAG > libguestfs: [03647ms] appliance is up > libguestfs: send_to_daemon: 72 bytes: 00 00 00 44 | 20 00 f5 f5 | 00 00 00 04 | 00 00 00 4a | 00 00 00 00 | ... > guestfsd: main_loop: new request, len 0x44 > /dev/sda1: No such file or directory > mount -o /dev/vda1 /sysroot/ > [ 1.759120] SGI XFS with ACLs, security attributes, realtime, large block/inode numbers, no debug enabled > [ 1.762869] XFS (vda1): Version 5 superblock detected. This kernel has EXPERIMENTAL support enabled! > [ 1.762869] Use of these features in this kernel is at your own risk! > [ 1.764819] XFS (vda1): Superblock has unknown read-only compatible features (0x1) enabled. > [ 1.765834] XFS (vda1): Attempted to mount read-only compatible filesystem read-write. > [ 1.765834] Filesystem can only be safely mounted read only. > [ 1.767472] XFS (vda1): SB validate failed with error 22. > mount: wrong fs type, bad option, bad superblock on /dev/vda1, > missing codepage or helper program, or other error > In some cases useful info is found in syslog - try > dmesg | tail or so > > guestfsd: error: /dev/vda1 on /: mount: wrong fs type, bad option, bad superblock on /dev/vda1, > missing codepage or helper program, or other error > In some cases useful info is found in syslog - try > dmesg | tail or so > guestfsd: main_loop: proc 74 (mount_options) took 0.09 seconds > libguestfs: recv_from_daemon: 272 bytes: 20 00 f5 f5 | 00 00 00 04 | 00 00 00 4a | 00 00 00 01 | 00 12 34 00 | ... > libguestfs: error: mount_options: /dev/vda1 on /: mount: wrong fs type, bad option, bad superblock on /dev/vda1, > missing codepage or helper program, or other error > In some cases useful info is found in syslog - try > dmesg | tail or so > > > > I've tried with both /dev/sda1 and /dev/vda1 but no luck. Interestingly enough, a CentOS 7.2 image with XFS and the same setup (i.e., a single partition formatted with XFS) mounts without issue. Any ideas?You probably need to install libguestfs-xfs on the host. Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming and virtualization blog: http://rwmj.wordpress.com Fedora Windows cross-compiler. Compile Windows programs, test, and build Windows installers. Over 100 libraries supported. http://fedoraproject.org/wiki/MinGW
Andre Goree
2016-Aug-09 17:15 UTC
Re: [libvirt-users] Cannot guestmount a Fedora 24 XFS disk.
The host is running Ubuntu 12.04 LTS and has the libguestfs package installed -- which, if I'm not mistaken, provides libguestfs-xfs: https://launchpad.net/ubuntu/+source/libguestfs Andre Goree ________________________________________ From: Richard W.M. Jones <rjones@redhat.com> Sent: Monday, August 8, 2016 3:21 AM To: Andre Goree Cc: libvirt-users@redhat.com; libguestfs@redhat.com Subject: Re: [libvirt-users] Cannot guestmount a Fedora 24 XFS disk. On Fri, Aug 05, 2016 at 02:46:11PM +0000, Andre Goree wrote:> > I seem to be having trouble using guestmount to mount a Fedora 24 disk that is using XFS. This is the error messings I get when I try: > > root@cpdev-cn5:/var/lib/libvirt/images/base# guestmount --rw -a ${disk_path}/${disk_name} -m /dev/${target}1 /tmp/fedora-master/ > libguestfs: error: mount_options: /dev/vda1 on /: mount: wrong fs type, bad option, bad superblock on /dev/vda1, > missing codepage or helper program, or other error > In some cases useful info is found in syslog - try > dmesg | tail or so > guestmount: '/dev/sda1' could not be mounted. Did you mean one of these? > /dev/sda1 (xfs) > > > > Verbose output shows: > libguestfs: recv_from_daemon: received GUESTFS_LAUNCH_FLAG > libguestfs: [03647ms] appliance is up > libguestfs: send_to_daemon: 72 bytes: 00 00 00 44 | 20 00 f5 f5 | 00 00 00 04 | 00 00 00 4a | 00 00 00 00 | ... > guestfsd: main_loop: new request, len 0x44 > /dev/sda1: No such file or directory > mount -o /dev/vda1 /sysroot/ > [ 1.759120] SGI XFS with ACLs, security attributes, realtime, large block/inode numbers, no debug enabled > [ 1.762869] XFS (vda1): Version 5 superblock detected. This kernel has EXPERIMENTAL support enabled! > [ 1.762869] Use of these features in this kernel is at your own risk! > [ 1.764819] XFS (vda1): Superblock has unknown read-only compatible features (0x1) enabled. > [ 1.765834] XFS (vda1): Attempted to mount read-only compatible filesystem read-write. > [ 1.765834] Filesystem can only be safely mounted read only. > [ 1.767472] XFS (vda1): SB validate failed with error 22. > mount: wrong fs type, bad option, bad superblock on /dev/vda1, > missing codepage or helper program, or other error > In some cases useful info is found in syslog - try > dmesg | tail or so > > guestfsd: error: /dev/vda1 on /: mount: wrong fs type, bad option, bad superblock on /dev/vda1, > missing codepage or helper program, or other error > In some cases useful info is found in syslog - try > dmesg | tail or so > guestfsd: main_loop: proc 74 (mount_options) took 0.09 seconds > libguestfs: recv_from_daemon: 272 bytes: 20 00 f5 f5 | 00 00 00 04 | 00 00 00 4a | 00 00 00 01 | 00 12 34 00 | ... > libguestfs: error: mount_options: /dev/vda1 on /: mount: wrong fs type, bad option, bad superblock on /dev/vda1, > missing codepage or helper program, or other error > In some cases useful info is found in syslog - try > dmesg | tail or so > > > > I've tried with both /dev/sda1 and /dev/vda1 but no luck. Interestingly enough, a CentOS 7.2 image with XFS and the same setup (i.e., a single partition formatted with XFS) mounts without issue. Any ideas?You probably need to install libguestfs-xfs on the host. Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming and virtualization blog: http://rwmj.wordpress.com Fedora Windows cross-compiler. Compile Windows programs, test, and build Windows installers. Over 100 libraries supported. http://fedoraproject.org/wiki/MinGW