From: Ming Lei <ming.lei@redhat.com>
To: linux-nvme@lists.infradead.org, linux-block@vger.kernel.org,
Christoph Hellwig <hch@lst.de>, Jens Axboe <axboe@kernel.dk>,
Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Subject: NVMe: Regression: write zeros corrupts ext4 file system
Date: Mon, 11 Mar 2019 10:24:42 +0800 [thread overview]
Message-ID: <20190311022441.GA16849@ming.t460p> (raw)
Hi,
It is observed that ext4 is corrupted easily by running some workloads
on QEMU NVMe, such as:
1) mkfs.ext4 /dev/nvme0n1
2) mount /dev/nvme0n1 /mnt
3) cd /mnt; git clone git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
4) then the following error message may show up:
[ 1642.271816] EXT4-fs error (device nvme0n1): ext4_mb_generate_buddy:747: group 0, block bitmap and bg descriptor inconsistent: 32768 vs 23513 free clusters
Or fsck.ext4 will complain after running 'umount /mnt'
The issue disappears by reverting 6e02318eaea53eaafe6 ("nvme: add support for the
Write Zeroes command").
QEMU version:
QEMU emulator version 2.10.2(qemu-2.10.2-1.fc27)
Copyright (c) 2003-2017 Fabrice Bellard and the QEMU Project developers
Thanks,
Ming
WARNING: multiple messages have this Message-ID (diff)
From: ming.lei@redhat.com (Ming Lei)
Subject: NVMe: Regression: write zeros corrupts ext4 file system
Date: Mon, 11 Mar 2019 10:24:42 +0800 [thread overview]
Message-ID: <20190311022441.GA16849@ming.t460p> (raw)
Hi,
It is observed that ext4 is corrupted easily by running some workloads
on QEMU NVMe, such as:
1) mkfs.ext4 /dev/nvme0n1
2) mount /dev/nvme0n1 /mnt
3) cd /mnt; git clone git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
4) then the following error message may show up:
[ 1642.271816] EXT4-fs error (device nvme0n1): ext4_mb_generate_buddy:747: group 0, block bitmap and bg descriptor inconsistent: 32768 vs 23513 free clusters
Or fsck.ext4 will complain after running 'umount /mnt'
The issue disappears by reverting 6e02318eaea53eaafe6 ("nvme: add support for the
Write Zeroes command").
QEMU version:
QEMU emulator version 2.10.2(qemu-2.10.2-1.fc27)
Copyright (c) 2003-2017 Fabrice Bellard and the QEMU Project developers
Thanks,
Ming
next reply other threads:[~2019-03-11 2:24 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-11 2:24 Ming Lei [this message]
2019-03-11 2:24 ` NVMe: Regression: write zeros corrupts ext4 file system Ming Lei
2019-03-11 7:54 ` Dongli Zhang
2019-03-11 7:54 ` Dongli Zhang
2019-03-11 10:16 ` Ming Lei
2019-03-11 10:16 ` Ming Lei
2019-03-11 14:54 ` Keith Busch
2019-03-11 14:54 ` Keith Busch
2019-03-11 15:23 ` Christoph Hellwig
2019-03-11 15:23 ` Christoph Hellwig
2019-03-12 1:32 ` Ming Lei
2019-03-12 1:32 ` Ming Lei
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