From: bugzilla-daemon@bugzilla.kernel.org
To: kvm@vger.kernel.org
Subject: [Bug 205655] kvm with cache=none and btrfs -> corrupted file system
Date: Tue, 03 Dec 2019 09:08:31 +0000 [thread overview]
Message-ID: <bug-205655-28872-tMNdxtLd4J@https.bugzilla.kernel.org/> (raw)
In-Reply-To: <bug-205655-28872@https.bugzilla.kernel.org/>
https://bugzilla.kernel.org/show_bug.cgi?id=205655
--- Comment #2 from Stefan Hajnoczi (stefanha@gmail.com) ---
On Tue, Nov 26, 2019 at 09:24:48AM +0000, bugzilla-daemon@bugzilla.kernel.org
wrote:
> https://bugzilla.kernel.org/show_bug.cgi?id=205655
>
> Bug ID: 205655
> Summary: kvm with cache=none and btrfs -> corrupted file system
> Product: Virtualization
> Version: unspecified
> Kernel Version: 4.9 4.19 5.3.12
> Hardware: x86-64
> OS: Linux
> Tree: Mainline
> Status: NEW
> Severity: high
> Priority: P1
> Component: kvm
> Assignee: virtualization_kvm@kernel-bugs.osdl.org
> Reporter: denis.ovsyannikov@gmail.com
> Regression: No
>
> hello
> we use kvm with disks formatted in btrfs
> when we turned on the mode "cache=none"
> got data corruption
> other modes work well
>
> we tested it on three servers and the result is always repeated
> we tested on three operating systems(debian 9, debian 10, manjaro with kernel
> 5.3.12)
>
> fstab
> UUID=a49494f2-35a4-4a9c-aab0-1afc905c02c2 /mnt/test btrfs defaults 0 2
>
> dmesg
> [675174.887900] BTRFS error (device sde1): bdev /dev/sde1 errs: wr 0, rd 0,
> flush 0, corrupt 2137, gen 0
>
> [102857.086874] BTRFS warning (device sdc1): csum failed root 256 ino 260 off
> 1735843840 csum 0xf69f8dd2 expected csum 0x96e71981 mirror 1
Please post your QEMU command-line.
What is the storage configuration on the host? Which host file system
are you using? Which image file format?
What test is being run inside the guest?
Is this a regression? Which host and guest kernel versions worked fine
before?
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prev parent reply other threads:[~2019-12-03 9:08 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-26 9:24 [Bug 205655] New: kvm with cache=none and btrfs -> corrupted file system bugzilla-daemon
2019-11-26 11:48 ` [Bug 205655] " bugzilla-daemon
2019-12-03 9:08 ` [Bug 205655] New: " Stefan Hajnoczi
2019-12-03 9:08 ` bugzilla-daemon [this message]
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