linux-kernel - [lkp] [Btrfs] 657ed1aa48: kmsg.BTRFS_warning(device_dm-#):block_group#has_wrong_amount_of_free

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Message-ID: <20160602063244.GC30850@yexl-desktop>
Date:	Thu, 2 Jun 2016 14:32:44 +0800
From:	kernel test robot <xiaolong.ye@...el.com>
To:	Filipe Manana <fdmanana@...e.com>
Cc:	LKML <linux-kernel@...r.kernel.org>, lkp@...org
Subject: [lkp] [Btrfs] 657ed1aa48:
 kmsg.BTRFS_warning(device_dm-#):block_group#has_wrong_amount_of_free_space



FYI, we noticed the following commit:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
commit 657ed1aa4898c8304500e0d13f240d5a67e8be5f ("Btrfs: fix for incorrect directory entries after fsync log replay")

in testcase: xfstests
with following parameters: disk=4HDD/fs=btrfs/test=generic-quick2

on test machine: snb-drag:  threads Sandy Bridge with 6G memory

caused below changes:


[   61.736765] BTRFS warning (device dm-0): block group 29360128 has wrong amount of free space
[   61.746562] BTRFS warning (device dm-0): failed to load free space cache for block group 29360128, rebuilding it now


To reproduce:

        git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git
        cd lkp-tests
        bin/lkp install job.yaml  # job file is attached in this email
        bin/lkp run     job.yaml



Thanks,
Xiaolong

View attachment "config-4.6.0-rc7-00001-g657ed1a" of type "text/plain" (149456 bytes)

Download attachment "dmesg.xz" of type "application/octet-stream" (20456 bytes)

View attachment "job.yaml" of type "text/plain" (3554 bytes)

View attachment "reproduce" of type "text/plain" (1631 bytes)