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Document problems mixing mkmountpoint and umount-all (RHBZ#599503).

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Richard W.M. Jones
2010-10-26 10:44:11 +01:00
parent 607dcadd2d
commit 33d6e0e723
1 changed files with 20 additions and 5 deletions
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generator/generator_actions.ml
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@@ -3394,13 +3394,28 @@ in guestfish:
add-ro Fedora-11-i686-Live.iso
run
mkmountpoint /cd
mkmountpoint /squash
mkmountpoint /ext3
mkmountpoint /sqsh
mkmountpoint /ext3fs
mount /dev/sda /cd
mount-loop /cd/LiveOS/squashfs.img /squash
mount-loop /squash/LiveOS/ext3fs.img /ext3
mount-loop /cd/LiveOS/squashfs.img /sqsh
mount-loop /sqsh/LiveOS/ext3fs.img /ext3fs
The inner filesystem is now unpacked under the /ext3 mountpoint.");
The inner filesystem is now unpacked under the /ext3fs mountpoint.
C<guestfs_mkmountpoint> is not compatible with C<guestfs_umount_all>.
You may get unexpected errors if you try to mix these calls. It is
safest to manually unmount filesystems and remove mountpoints after use.
C<guestfs_umount_all> unmounts filesystems by sorting the paths
longest first, so for this to work for manual mountpoints, you
must ensure that the innermost mountpoints have the longest
pathnames, as in the example code above.
For more details see L<https://bugzilla.redhat.com/show_bug.cgi?id=599503>
Autosync [see C<guestfs_set_autosync>, this is set by default on
handles] means that C<guestfs_umount_all> is called when the handle
is closed which can also trigger these issues.");
("rmmountpoint", (RErr, [String "exemptpath"], []), 149, [],
[],