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Bug 1057510 - mount-local should give a clearer error if root is not mounted
Summary: mount-local should give a clearer error if root is not mounted
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: libguestfs
Version: 6.5
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: rc
: ---
Assignee: Pino Toscano
QA Contact: Virtualization Bugs
URL:
Whiteboard:
Depends On: 1057504
Blocks:
TreeView+ depends on / blocked
 
Reported: 2014-01-24 09:18 UTC by yuliu
Modified: 2015-02-15 06:38 UTC (History)
7 users (show)

Fixed In Version: libguestfs-1.20.11-3.el6
Doc Type: Bug Fix
Doc Text:
Clone Of: 1057492
Environment:
Last Closed: 2014-10-14 06:35:06 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2014:1458 0 normal SHIPPED_LIVE libguestfs bug fix update 2014-10-14 01:10:57 UTC

Description yuliu 2014-01-24 09:18:02 UTC 
+++ This bug was initially created as a clone of Bug #1057492 +++

Description of problem:
Before run "mount-local localmountpoint " you should mount filesystem to "/" first.
This prerequisites should be added to help info.

Version-Release number of selected component (if applicable):


How reproducible:
100%

Steps to Reproduce:
1.
2.
3.

Actual results:


Expected results:


Additional info:

--- Additional comment from Richard W.M. Jones on 2014-01-24 04:07:09 EST ---

If you use mount-local without mounting something on / then you get
odd errors:

$ mkdir -p /tmp/mnt
$ guestfish -x -N fs mount-local /tmp/mnt : mount-local-run
libguestfs: error: lstat: lstat_stub: you must call 'mount' first to mount the root filesystem
libguestfs: error: lstat: lstat_stub: you must call 'mount' first to mount the root filesystem

Basically what happens is that mount-local itself doesn't do the
usual "is root mounted" daemon check (because it cannot - it is not
running in the daemon).  However any later commands which are run
by mount-local do this check, and give errors.

It would be better if mount-local itself did this check and gave
a clearer error if root was not mounted.
Comment 2 Richard W.M. Jones 2014-03-24 08:10:22 UTC 
Fix is:
https://github.com/libguestfs/libguestfs/commit/0e2489974b91e4728d544fe2aa08c2a1c9deb365
Comment 4 Lingfei Kong 2014-05-07 05:52:01 UTC 
Verified with libguestfs-1.20.11-3.el6

[root@amd-4450b-4-1 ~]# mkdir -p /tmp/mnt
[root@amd-4450b-4-1 ~]# guestfish -x -N fs mount-local /tmp/mnt : mount-local-run
libguestfs: trace: set_pgroup true
libguestfs: trace: set_pgroup = 0
libguestfs: trace: add_drive "test1.img" "format:raw"
libguestfs: trace: add_drive = 0
libguestfs: trace: is_config
libguestfs: trace: is_config = 1
libguestfs: trace: launch
libguestfs: trace: get_tmpdir
libguestfs: trace: get_tmpdir = "/tmp"
libguestfs: trace: get_cachedir
libguestfs: trace: get_cachedir = "/var/tmp"
libguestfs: trace: get_cachedir
libguestfs: trace: get_cachedir = "/var/tmp"
libguestfs: trace: launch = 0
libguestfs: trace: part_disk "/dev/sda" "mbr"
libguestfs: trace: part_disk = 0
libguestfs: trace: mkfs "ext2" "/dev/sda1"
libguestfs: trace: mkfs = 0
libguestfs: trace: mount_local "/tmp/mnt"
libguestfs: trace: mount_local = 0
libguestfs: trace: mount_local_run
libguestfs: trace: exists "/"
libguestfs: trace: exists = -1 (error)
libguestfs: error: you must call 'guestfs_mount' first to mount a filesystem on '/'.
Note: '/tmp/mnt' is still mounted.  Use 'fusermount -u /tmp/mnt' to clean up.
libguestfs: trace: mount_local_run = -1 (error)
libguestfs: trace: close
libguestfs: trace: internal_autosync
libguestfs: trace: internal_autosync = 0
Comment 5 errata-xmlrpc 2014-10-14 06:35:06 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

http://rhn.redhat.com/errata/RHBA-2014-1458.html
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