File space cache

File space cache

[Alex]

Hi All,

It seems my btrfs file space cache is corrupt; I had to run clear the log
through a kernel problem.

I've seen messages that the cache is rebuilt automatically, but this doesn't
seem to be true as the messages that the free space is what is expected keep
coming.

I'm running kernel 3.8.2 (Siduction) on Debian testing.

As a subsidiary question, please, should the <pass> value in fstab be zero or
non-zero?

Kind regards.

Al.

Re: File space cache

[dima]

Hello Alex,

On 03/13/2013 01:17 AM, Alex wrote:
> Hi All,
>
> It seems my btrfs file space cache is corrupt; I had to run clear the log
> through a kernel problem.
>
> I've seen messages that the cache is rebuilt automatically, but this doesn't
> seem to be true as the messages that the free space is what is expected keep
> coming.
>
> I'm running kernel 3.8.2 (Siduction) on Debian testing.


I believe you may try clear_cache mount option
https://btrfs.wiki.kernel.org/index.php/Mount_options


>
> As a subsidiary question, please, should the <pass> value in fstab be zero or
> non-zero?


It should be zero. But since fsck.btrfs is non-existent, it does not 
really matter I guess.


~dima


> Kind regards.
>
> Al.
>
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Re: File space cache

[Hugo Mills]

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On Wed, Mar 13, 2013 at 02:31:27PM +0900, dima wrote:
> Hello Alex,
> 
> On 03/13/2013 01:17 AM, Alex wrote:
> >Hi All,
> >
> >It seems my btrfs file space cache is corrupt; I had to run clear the log
> >through a kernel problem.
> >
> >I've seen messages that the cache is rebuilt automatically, but this doesn't
> >seem to be true as the messages that the free space is what is expected keep
> >coming.
> >
> >I'm running kernel 3.8.2 (Siduction) on Debian testing.
> 
> 
> I believe you may try clear_cache mount option
> https://btrfs.wiki.kernel.org/index.php/Mount_options
> 
> 
> >
> >As a subsidiary question, please, should the <pass> value in fstab be zero or
> >non-zero?
> 
> 
> It should be zero. But since fsck.btrfs is non-existent, it does not
> really matter I guess.

   Eh? We've had a functional btrfsck for nearly a year.

   Hugo.

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Re: File space cache

[dima]

On 03/13/2013 05:53 PM, Hugo Mills wrote:
> On Wed, Mar 13, 2013 at 02:31:27PM +0900, dima wrote:
>> Hello Alex,
>>
>> On 03/13/2013 01:17 AM, Alex wrote:
>>> Hi All,
>>>
>>> It seems my btrfs file space cache is corrupt; I had to run clear the log
>>> through a kernel problem.
>>>
>>> I've seen messages that the cache is rebuilt automatically, but this doesn't
>>> seem to be true as the messages that the free space is what is expected keep
>>> coming.
>>>
>>> I'm running kernel 3.8.2 (Siduction) on Debian testing.
>>
>>
>> I believe you may try clear_cache mount option
>> https://btrfs.wiki.kernel.org/index.php/Mount_options
>>
>>
>>>
>>> As a subsidiary question, please, should the <pass> value in fstab be zero or
>>> non-zero?
>>
>>
>> It should be zero. But since fsck.btrfs is non-existent, it does not
>> really matter I guess.
>
>     Eh? We've had a functional btrfsck for nearly a year.


Right. But it is not something that you run on boot, is it. That is why 
I mentioned fsck.btrfs



>     Hugo.
>