Re: assertion failures

Gustavo Alves
2010-02-26T21:26:58Z

In the tragic day I have done a "halt" command, but, as usual, never
finished as btrfs freezes before umount. I waited almost 5 minutes and
then pressed the power button.

The struct of the machine was very similar with the machine listed belo=
w.

--- Physical volume ---
PV Name /dev/sda
VG Name specchio
PV Size 465.76 GiB / not usable 12.02 MiB
Allocatable yes (but full)
PE Size 128.00 MiB
Total PE 3726
Free PE 0
Allocated PE 3726
PV UUID YpNYXY-AI1i-1D8D-9BAa-1DeY-hWNL-ZOtBIh

--- Physical volume ---
PV Name /dev/sdb1
VG Name specchio
PV Size 931.51 GiB / not usable 11.19 MiB
Allocatable yes
PE Size 128.00 MiB
Total PE 7452
Free PE 24
Allocated PE 7428
PV UUID G1mWRL-I7zx-bwbi-zYe8-tc2q-DrtD-tH6jIi

--- Physical volume ---
PV Name /dev/sdd
VG Name specchio
PV Size 931.51 GiB / not usable 13.71 MiB
Allocatable yes (but full)
PE Size 128.00 MiB
Total PE 7452
Free PE 0
Allocated PE 7452
PV UUID TWCEea-UURq-8HbM-NgkC-2J3Y-1qYE-TN7vud

--- Physical volume ---
PV Name /dev/sdc
VG Name specchio
PV Size 1.36 TiB / not usable 15.40 MiB
Allocatable yes
PE Size 128.00 MiB
Total PE 11178
Free PE 11024
Allocated PE 154
PV UUID hUbv4T-2Q0i-plGb-EO6a-2vAo-uHwj-Vda8zz

--- Volume group ---
VG Name specchio
System ID
Format lvm2
Metadata Areas 4
Metadata Sequence No 37
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 15
Open LV 15
Max PV 0
Cur PV 4
Act PV 4
VG Size 3.64 TiB
PE Size 128.00 MiB
Total PE 29808
Alloc PE / Size 18760 / 2.29 TiB
Free PE / Size 11048 / 1.35 TiB
VG UUID AKxGo3-MVTJ-7XdC-GeTW-23e8-5Ee2-HY2PZ0

----
Gustavo Junior Alves

On Fri, Feb 26, 2010 at 6:10 PM, Chris Mason <chris.mason@oracle.com> w=
rote:
> On Fri, Feb 26, 2010 at 04:57:27PM -0300, Gustavo Alves wrote:
>> In my case, kernel 2.6.32-0.51.rc7.git2.fc13.i686.PAE and BTRFS unde=
r LVM2.
>>
>
> Did you also have power-off based reboots? =A0Depending on the
> configuration LVM (anything other than a single drive) won't send bar=
riers to
> the device.
>
> -chris
>
>> ----
>> Gustavo Junior Alves
>> Specchio Solu=E7=F5es em TI
>>
>>
>> On Fri, Feb 26, 2010 at 1:15 PM, Chris Mason <chris.mason@oracle.com=
> wrote:
>> > On Fri, Feb 26, 2010 at 11:13:32AM -0500, Chris Mason wrote:
>> >> On Thu, Feb 25, 2010 at 03:28:19PM -0300, Gustavo Alves wrote:
>> >> > I've got the same error before in a similar situation (24 parti=
tions,
>> >> > only two with problems). Unfortunally I erased all data after t=
his
>> >> > error. Strange that all I've done was shutdown and poweron the
>> >> > machine.
>> >>
>> >> Basically it looks like the tree of data checksums isn't right. =A0=
Which
>> >> kernels were you running when you had these problems?
>> >
>> > Sorry, I mixed up this corruption with one farther down. =A0The sa=
me
>> > question stands though, this error generally means that IO either =
didn't
>> > happen or happened in the wrong place.
>> >
>> > So, the more details you can give about your config the easier it =
will
>> > be to nail it down.
>> >
>> > -chris
>> >
>> >
>> --
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