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
On 13 December 2010 23:13, Mathias Burén <[email protected]> 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
On 13 December 2010 23:13, Mathias Burén <[email protected]> wrote:
> On 13 December 2010 23:13, Mathias Burén <[email protected]> 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