Thanks @Richard W.M. Jones<mailto:rjo...@redhat.com>!
Yes, this has been happening for us continuously after Fedora 40 upgrade. Here is the bug I filed: 2379916 – GuestFish intermittently failing after upgrading Base image to Fedora 40<https://bugzilla.redhat.com/show_bug.cgi?id=2379916> Needs some urgent help if possible, as due to fedora 39 becoming out of support for security purpose and we need to upgrade. Thanks, Chintan ________________________________ From: Richard W.M. Jones <rjo...@redhat.com> Sent: Saturday, July 12, 2025 12:55 AM To: Chintan Patel <chintan_or...@outlook.com>; guestfs@lists.libguestfs.org <guestfs@lists.libguestfs.org> Cc: libgues...@redhat.com <libgues...@redhat.com> Subject: Re: GuestFish intermittently failing after upgrading Base image to Fedora 40 On Fri, Jul 11, 2025 at 10:41:59PM +0000, Chintan Patel wrote: > Hi Richard, > > We were using LibguestFS version 1.52 on Fedora 39 and it was working as > expected since last year, but due to the security issue and Fedora 39 is our > of > support we need to upgrade to Fedora 40 for our container base image. > > But after upgrading to Fedora 40, we are started experiencing intermittent > failure on guestfish to mount the disk, sometime it is able to mount the disk > as well execute the copy command to copy the files from disk and fails in > middle. We are getting below failure messages in the failure. > > > message > OperationalLog: /dev/sda2: ntfs [uuid=30BC6B21BC6AE0B8] > /dev/sda3: vfat [uuid=166A-F60E] > /dev/sda4: ntfs [uuid=9E3C6B453C6B1793] > GuestFish:Inspecting OS Metadata:Remote> /libguestfs/run guestfish --remote > inspect-os > GuestFish:Inspecting OS Metadata:Error> > guestfish: protocol error: could not decode reply from server > GuestFish: Retrying forInspecting OS Metadata > GuestFish:Inspecting OS Metadata:Remote> /libguestfs/run guestfish --remote > inspect-os > GuestFish:Inspecting OS Metadata:Error> > guestfish: remote: looks like the server is not running > > > > message > GuestFish:Mount [/,/dev/sda1]:Remote> /libguestfs/run guestfish --remote -- > -mount-ro /dev/sda1 / > GuestFish:Mount [/,/dev/sda1]:Error> > guestfish: remote: looks like the server is not running > > > > I tried upgrading the libguesfs to the latest version 1.56.1 but still > observing similar errors intermittently. The error comes from https://github.com/libguestfs/libguestfs/blob/dc218b25f0bc2704918748e4e8120ec436783e58/fish/rc.c#L423 But there's not a lot else to go on. The protocol used: https://github.com/libguestfs/libguestfs/blob/master/fish/rc_protocol.x is very simple and hasn't changed in many years, so I don't know why the XDR function would fail like this. If you can get a proper, reliable reproducer, then I guess file a bug. Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming and virtualization blog: http://rwmj.wordpress.com virt-builder quickly builds VMs from scratch http://libguestfs.org/virt-builder.1.html
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