similar to: [PATCH 0/5] Four fixes for FUSE support and a test script

This version doesn't crash or cause hung processes or stuck mountpoints, so that's an improvement. Rich.

This patch is just for review. It enables FUSE support in the API via two new calls, 'guestfs_mount_local' and 'guestfs_umount_local'. FUSE turns out to be very easy to deadlock (necessitating that the machine be rebooted). Running the test from the third patch is usually an effective way to demonstrate this. However I have not yet managed to produce a simple reproducer that

This changes the proposed API slightly. Previously 'mount-local' generating a 'mounted' event when the filesystem was ready, and from the 'mounted' event you had to effectively do a fork. Now, 'mount-local' just initializes the mountpoint and you have to call 'mount-local-run' to enter the FUSE main loop. Between these calls you can do a fork or whatever

guestmount.c: In function 'main': guestmount.c:899: error: implicit declaration of function 'setlocale' [-Wimplicit-function-declaration] guestmount.c wasn't including locale.h. --- fuse/guestmount.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/fuse/guestmount.c b/fuse/guestmount.c index b4a917f..27a4cef 100644 --- a/fuse/guestmount.c +++

The full description of this bug is here: https://bugzilla.redhat.com/show_bug.cgi?id=838592 and the effect it has on OpenStack is described here: https://bugzilla.redhat.com/show_bug.cgi?id=835466#c9 Rich.

Fix compilation failure on F17 --- fuse/guestmount.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fuse/guestmount.c b/fuse/guestmount.c index 7c5e0af..379346f 100644 --- a/fuse/guestmount.c +++ b/fuse/guestmount.c @@ -28,6 +28,7 @@ #include <unistd.h> #include <getopt.h> #include <signal.h> +#include <locale.h> /* We're still using some of FUSE to

* PATCH FOR DISCUSSION ONLY - NOT TO BE APPLIED * Colin suggested something which seems eminently sensible: https://bugzilla.redhat.com/show_bug.cgi?id=916780 I've been through a couple of rounds of trying to implement this. I started with adding the option as suggested to the guestmount program, but it tended to make the guestmount program more complex. More importantly, adding the option

-- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones virt-top is 'top' for virtual machines. Tiny program with many powerful monitoring features, net stats, disk stats, logging, etc. http://et.redhat.com/~rjones/virt-top -------------- next part -------------- >From 298c7e2db9b1be751928844553339fa0317a54c3 Mon Sep 17 00:00:00 2001 From: Richard Jones

Hello, Using older libguestfs 1.34.6-2 (from Ubuntu's standard package), I encountered this: libguestfs fails with an error, but the error code is "success": $ sudo guestmount -m /dev/sda1 --ro \ -o allow_others \ -a data.qcow2 \ /media/foo fuse: unknown option `allow_others' libguestfs: error: fuse_new:

I'm wondering whether or not anyone has tried to use guestmount on an image with a ZFS partition (MBR partition table). I can't seem to find much on the internet regarding it, but I do see hints that may lead me to a solution. I'm under the impression that libguestfs can use what ever is available to the kernel on the host -- in my case I have zfs-use installed and running. I

Since the first patch: - The program is now called 'guestunmount'. - I tested the --fd option and it appears to work. - You can now control retries / quiet. - Revised man pages. - Includes tests. I'm just running through the automated tests now. Rich.

Upon seeing RWM Jones article "Using mount-local API from C" I became curious because I thought there WAS a way to combine aspects of FUSE with the tools provided by libguestfs. So if I wanted to create my own filesystem using callbacks placed in the 'fuse_operations' struct (parameter to 'fuse_main()'), I could do so using guestfs. But after reading the article and

Second round of patches. These work so far that you can get directory listings and stuff like that ... Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones libguestfs lets you edit virtual machines. Supports shell scripting, bindings from many languages. http://et.redhat.com/~rjones/libguestfs/ See what it can do:

Hi, I'm experiencing a weird behavior when tried to use guestmount with a XFS formatted volume. I have created a RHEL 8 virtual machine using libvirt. I have retrieved the disk image on a RHEL 7.7 server to mount the image root filesystem and explore it. The command returns an error message: # guestmount -a /disks/jamesdream.qcow2 -m /dev/sda1 /mnt/ libguestfs: error: mount_options: mount

Cédric pointed out this problem we have: $ guestmount -a /var/lib/libvirt/images/sles12sp1-pv.img -m '/dev/sda1:/:subvol=.snapshots/2/snapshot:btrfs' /mnt libguestfs: error: mount_vfs: /dev/sda1 on / (options: 'subvol=.snapshots/2/snapshot'): mount: mount(2) failed: No such file or directory guestmount: '/dev/sda1' could not be mounted. guestmount: Check mount(8) man page

Hello, I have a vmdk having an LV with an ext3 FS where some files have extended attributes and acls set. These do not appear set while accessing them when mounted using guestmount. I do not know if it is easy or difficult to implement this, so I'd like to take your opinion. what I did was changed the default mount options in daemon/mount.c from "ro" to

Hi, Apparently, guestmount -o allow_other -a "/path/to/raw_file" -m /dev/sda1 "/path/to/mountfolder" is much slower than kpartx -av "/path/to/raw_file" mount /dev/mapper/loop0p1 /path/to/mountfolder (Doing lots of read/write inside the image.) I thought guestmount "only" scripts the above. Seems I was wrong on that. I am currently using

Hi all, It seems guestmount always fails to flush changes to the mounted qcow2 snapshot. To reproduce this problem: 1. take an external snapshot for a qcow2 2. guestmount the snapshot 3. do some changes, for example: `echo 123 > /test; cat /test`, right now /test can be seen created and containing the right content 4. fusermount -u {mount-point} 5. virt-cat changed file, for the example

Is r/w to a UFS partition using 'guestmount' still an impossibility? From everything I've found, it seems to be something that is not possible at the moment. I was just wondering if that has changed or if there are plans to change that? Here is the issue I'm experiencing: ~# guestmount --rw -a ${disk_path}/${disk_name} -m /dev/sda4 /tmp/freebsd-master libguestfs: error:

Hello, I've got a strange behavior with guestmount: I've a root directory with mod/owner = drwx------ root root. I cannot change directory to it as a regular user (as normal), but I can list its content (not normally normal) and I can change directory to a subdirectory in it which is mod drwxr-xr-x. E.g: $ mkdir /tmp/mnt $ guestmount --ro -i -a test.qcow2 /tmp/mnt/ $ cd /tmp/mnt $ ls -ld