#504049 Virtual FAT drive doesn't work with -snapshot

Package:
qemu-kvm
Source:
qemu
Submitter:
Josh Triplett
Date:
2025-07-28 19:57:02 UTC
Severity:
wishlist
Tags:
#504049#3
Date:
2008-10-30 20:03:28 UTC
From:
To:
The KVM virtual FAT drive does not work with -snapshot.  For instance:

$ kvm -fda fat:/tmp/foo -cdrom rescue.iso -boot d -snapshot
qemu: could not open disk image fat:/tmp/foo

Without -snapshot, it works fine.

- Josh Triplett
#504049#10
Date:
2009-12-28 20:47:08 UTC
From:
To:
You filled the bug http://bugs.debian.org/504049 in Debian BTS
against the package kvm. I'm closing it at *unstable*, but it will
remain open for older distributions.

For more information about this package's removal, read
http://bugs.debian.org/562620. That bug might give the reasons why
this package was removed and suggestions of possible replacements.

Don't hesitate to reply to this mail if you have any question.

Thank you for your contribution to Debian.
#504049#15
Date:
2010-01-04 08:18:42 UTC
From:
To:
reopen 498093
reassign 498093 qemu-kvm
retitle 498093 Please provide package for all architectures, not just amd64 and i386
reopen 504049
reassign 504049 qemu-kvm
retitle 504049 Virtual FAT drive doesn't work with -snapshot
reopen 507068
reassign 507068 qemu-kvm
retitle 507068 Please support -tftp, -smb, and -redir without outgoing access
# already done by Marco
#reopen 540686
#reassign 540686 qemu-kvm
retitle 540686 /etc/init.d/qemu-kvm: Stop action seems unnecessary
thanks
[...]

Argh.

This and a pile of kvm bugs got closed because kvm got removed from
Debian in favor of qemu-kvm.  In general, these bugs still apply to
qemu-kvm, which pretty much just represents a rename of the same
upstream source.  Reopening and reassigning my own bugs, but the
remainder of the bugs closed due to this removal also need reopening and
reassigning (and retitling).

- Josh Triplett
#504049#28
Date:
2010-03-12 19:27:37 UTC
From:
To:
tags 504049 + confirmed upstream
thanks

Josh Triplett wrote at Thu, 30 Oct 2008 13:03:28 -0700:

Yes, that seems broken, and it is still broken in current
qemu-kvm-0.12.3 in -unstable.  Tagging as such, even that
fat: disk "format" is not documented...

I'll ping upstream with this.

Thanks!

/mjt
#504049#37
Date:
2010-04-22 10:28:50 UTC
From:
To:
severity 504049 wishlist
thanks

I'm downgrading severity of this bug to wishlist.
Reason is that it's quite rare to use virtual fat
to start with (actually it isn't even documented
in qemu-kvm anymore), and especially with -snapshot.
Also, upstream isn't willing to work on this "corner
case" and apparently fixing it isn't exactly trivial.

In any way, working around the bug is trivial: just
use absolute path for the fat:dir, i.e.,
fat:$PWD/dir instead of fat:dir.

(I'm keeping this bug around still, ofcourse).

/mjt
#504049#42
Date:
2010-04-22 23:46:04 UTC
From:
To:
If that works around the bug, then I'd have no objection to a
documentation-only fix: document (in the manpage) that fat: requires an
absolute path and close the bug.

Thanks for following up.

- Josh Triplett