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DescriptionRichard W.M. Jones
2013-08-10 10:45:31 UTC
+++ This bug was initially created as a clone of Bug #995711 +++
Description of problem:
In libguestfs >= 1.20 when using the libvirt backend, it is
possible to have no block devices. However the list-filesystems
command / guestfs_list_filesystems API gives an error when
this happens. It actually returns an error without setting
an error string, which is itself another bug.
Version-Release number of selected component (if applicable):
libguestfs 1.23.14 with libvirt backend, Fedora 19
libguestfs-1.23.14-1.fc20.x86_64
libvirt-1.0.5.2-1.fc19.x86_64
How reproducible:
100%
Steps to Reproduce:
1. guestfish run : list-filesystems
2. echo $?
3.
Actual results:
Exit code is 1 indicating an error, although none is printed.
Expected results:
It should return an empty list, no error.
Additional info:
If you use guestfish -vx then you see the output below.
Note the line which says "list_filesystems = NULL (error)".
libguestfs: recv_from_daemon: received GUESTFS_LAUNCH_FLAG
libguestfs: [02803ms] appliance is up
libguestfs: trace: launch = 0
libguestfs: trace: list_filesystems
libguestfs: trace: list_devices
guestfsd: main_loop: new request, len 0x28
guestfsd: main_loop: proc 7 (list_devices) took 0.00 seconds
libguestfs: trace: list_devices = []
libguestfs: trace: list_partitions
guestfsd: main_loop: new request, len 0x28
guestfsd: main_loop: proc 8 (list_partitions) took 0.00 seconds
libguestfs: trace: list_partitions = []
libguestfs: trace: list_md_devices
guestfsd: main_loop: new request, len 0x28
guestfsd: main_loop: proc 300 (list_md_devices) took 0.00 seconds
libguestfs: trace: list_md_devices = []
libguestfs: trace: feature_available "lvm2"
guestfsd: main_loop: new request, len 0x34
guestfsd: main_loop: proc 398 (feature_available) took 0.00 seconds
libguestfs: trace: feature_available = 1
libguestfs: trace: lvs
guestfsd: main_loop: new request, len 0x28
lvm lvs -o vg_name,lv_name --noheadings --separator /
WARNING: Failed to connect to lvmetad: No such file or directory. Falling back to internal scanning.
No volume groups found
guestfsd: main_loop: proc 11 (lvs) took 0.01 seconds
libguestfs: trace: lvs = []
libguestfs: trace: feature_available "ldm"
guestfsd: main_loop: new request, len 0x34
guestfsd: main_loop: proc 398 (feature_available) took 0.00 seconds
libguestfs: trace: feature_available = 1
libguestfs: trace: list_ldm_volumes
guestfsd: main_loop: new request, len 0x28
guestfsd: main_loop: proc 380 (list_ldm_volumes) took 0.00 seconds
libguestfs: trace: list_ldm_volumes = []
libguestfs: trace: list_ldm_partitions
guestfsd: main_loop: new request, len 0x28
guestfsd: main_loop: proc 381 (list_ldm_partitions) took 0.00 seconds
libguestfs: trace: list_ldm_partitions = []
libguestfs: trace: list_filesystems = NULL (error)
libguestfs: trace: close
libguestfs: closing guestfs handle 0x7f29dcddd190 (state 2)
libguestfs: trace: internal_autosync
guestfsd: main_loop: new request, len 0x28
libguestfs: trace: internal_autosync = 0
libguestfs: command: run: rm
libguestfs: command: run: \ -rf /tmp/libguestfsNpMXiF
Comment 1Richard W.M. Jones
2013-08-10 10:45:55 UTC
Verified with libguestfs-1.22.6-16.el7.x86_64，
# echo $LIBGUESTFS_BACKEND
libvirt
# guestfish run : list-filesystems
# echo $?
0
Returns an empty list, and no error
This request was resolved in Red Hat Enterprise Linux 7.0.
Contact your manager or support representative in case you have further questions about the request.