linux-kernel - Re: ext4: initial error at 1288471943: ext4_mb_generate

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Message-ID: <AANLkTim8mpi=NXq4QAd4vmX7VPG6qe7djoAPRP8OcsoV@mail.gmail.com>
Date:	Mon, 13 Dec 2010 23:14:35 +0000
From:	Mathias Burén <mathias.buren@...il.com>
To:	linux-kernel@...r.kernel.org
Subject: Re: ext4: initial error at 1288471943: ext4_mb_generate_buddy:718

On 13 December 2010 23:13, Mathias Burén <mathias.buren@...il.com> wrote:
> On 13 December 2010 23:13, Mathias Burén <mathias.buren@...il.com> wrote:
>> Hi, I'm running 2.6.36 and I'm seeing this about once per day in dmesg:
>>
>> EXT4-fs (dm-0): error count: 1
>> EXT4-fs (dm-0): initial error at 1288471943: ext4_mb_generate_buddy:718
>> EXT4-fs (dm-0): last error at 1288471943: ext4_mb_generate_buddy:718
>>
>> uptime && dmesg | grep ' last error at 1288471943' | wc -l
>>  23:08:29 up 20 days,  5:46,  1 user,  load average: 0.69, 0.85, 0.83
>>
>> e2fsprogs 1.41.12-1
>> lvm2 2.02.78-1
>>
>> As you can see it's always the exact same message. I've run fsck on
>> the system and no errors were found. dm-0 is the root filesystem, it
>> all looks like this:
>>
>>
>> lrwxrwxrwx 1 root root 7 Nov 23 17:22 /dev/mapper/lvmssd-root -> ../dm-0
>>
>>  --- Volume group ---
>>  VG Name               lvmssd
>>  System ID
>>  Format                lvm2
>>  Metadata Areas        1
>>  Metadata Sequence No  27
>>  VG Access             read/write
>>  VG Status             resizable
>>  MAX LV                0
>>  Cur LV                1
>>  Open LV               1
>>  Max PV                0
>>  Cur PV                1
>>  Act PV                1
>>  VG Size               53.80 GiB
>>  PE Size               4.00 MiB
>>  Total PE              13772
>>  Alloc PE / Size       13772 / 53.80 GiB
>>  Free  PE / Size       0 / 0
>>  VG UUID               4jqUcB-jEzl-pKT1-mcPU-soCV-2YXT-cuTk9v
>>
>> ...
>>
>>  hdparm -i /dev/sda
>>
>> /dev/sda:
>>
>>  Model=Corsair CSSD-F60GB2, FwRev=1.1, SerialNo=10326505580009990027
>>  Config={ Fixed }
>>  RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4
>>  BuffType=unknown, BuffSize=unknown, MaxMultSect=16, MultSect=1
>>  CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=117231408
>>  IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
>>  PIO modes:  pio0 pio1 pio2 pio3 pio4
>>  DMA modes:  mdma0 mdma1 mdma2
>>  UDMA modes: udma0 udma1 udma2 udma3 udma4 udma5 *udma6
>>  AdvancedPM=no WriteCache=enabled
>>  Drive conforms to: unknown:  ATA/ATAPI-2,3,4,5,6,7
>>
>>  * signifies the current active mode
>>
>> Is this message dangerous? Can I disable it somehow? Why is it showing up? Etc.
>>
>>
>> Thanks,
>> // Mathias
>>
>
> Oh, and can you please cc me as I'm not subscribed!
>
> // Mathias
>

.. and ext4 mount options are:

/dev/disk/by-label/ssd_root on / type ext4 (rw,noatime,barrier=0,data=writeback)

I think that is all.

// Mathias
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