Bug#1116358: linux-image-6.12.48+deb13-amd64: LVM snapshots causing I/O errors in KVM guest with aio=io_uring set

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From	Salvatore Bonaccorso <carnil@debian.org>
Newsgroups	linux.debian.bugs.dist, linux.debian.kernel
Subject	Bug#1116358: linux-image-6.12.48+deb13-amd64: LVM snapshots causing I/O errors in KVM guest with aio=io_uring set
Date	Mon, 13 Oct 2025 19:50:02 +0200
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Hi Kevin,

On Mon, Oct 13, 2025 at 08:07:51PM +0300, Kevin Lumik wrote:
> Hello,
> 
> I've identified the first bad commit using git bisect:
> 
> 90bfb28d5fa8127a113a140c9791ea0b40ab156a is the first bad commit
> commit 90bfb28d5fa8127a113a140c9791ea0b40ab156a
> Author: Jens Axboe <axboe@kernel.dk>
> Date:   Tue Sep 10 08:57:04 2024 -0600
> 
>     io_uring/rw: drop -EOPNOTSUPP check in __io_complete_rw_common()
>     
>     A recent change ensured that the necessary -EOPNOTSUPP -> -EAGAIN
>     transformation happens inline on both the reader and writer side,
>     and hence there's no need to check for both of these anymore on
>     the completion handler side.
>     
>     Signed-off-by: Jens Axboe <axboe@kernel.dk>
> 
>  io_uring/rw.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)

Great news, thank you for doing this work. I just have forwarded the
information to the io-uring maintainer, let's see if that rings a
bell.

Regards,
Salvatore

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Bug#1116358: linux-image-6.12.48+deb13-amd64: LVM snapshots causing I/O errors in KVM guest with aio=io_uring set Salvatore Bonaccorso <carnil@debian.org> - 2025-09-27 16:20 +0200
  Processed: Re: Bug#1116358: linux-image-6.12.48+deb13-amd64: LVM  snapshots causing I/O errors in KVM guest with aio=io_uring set "Debian Bug Tracking System" <owner@bugs.debian.org> - 2025-09-27 16:20 +0200
  Bug#1116358: linux-image-6.12.48+deb13-amd64: LVM snapshots causing I/O errors in KVM guest with aio=io_uring set Kevin Lumik <kevin@xf.ee> - 2025-10-02 13:40 +0200
    Bug#1116358: linux-image-6.12.48+deb13-amd64: LVM snapshots causing I/O errors in KVM guest with aio=io_uring set Salvatore Bonaccorso <carnil@debian.org> - 2025-10-02 16:30 +0200
      Bug#1116358: linux-image-6.12.48+deb13-amd64: LVM snapshots causing I/O errors in KVM guest with aio=io_uring set Kevin Lumik <kevin@xf.ee> - 2025-10-13 19:10 +0200
        Bug#1116358: linux-image-6.12.48+deb13-amd64: LVM snapshots causing I/O errors in KVM guest with aio=io_uring set Salvatore Bonaccorso <carnil@debian.org> - 2025-10-13 19:50 +0200

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