Re: NILFS: bad btree node

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It's a 3TB harddisk. Could that be the reason?

Right now, it's mounted read-only. Is it safe to make it read/write
again? And can I run nilfs-clean on it and maybe the error would be
gone?

On Sat, May 26, 2012 at 2:06 AM, Reinoud Zandijk <reinoud@xxxxxxxxxx> wrote:
> Hi Kenneth.
>
> On Fri, May 25, 2012 at 10:30:40PM +0800, Kenneth Langga wrote:
>> NILFS: bad btree node (blocknr=111560943): level = 242, flags = 0x3f,
>> nchildren = 23369
>> NILFS error (device sdc2): nilfs_bmap_lookup_contig: broken bmap
>> (inode number=19696)
>>
>> What is the correct course of action for this type of error? And what
>> would have caused this?
>
> What struck me is the very high level and the absurt number of number of
> children. That can't be good. AFAIR NiLFS only has say upto 3 (or 4?) levels
> in its B-tree. It *could* be failing in rebalancing or more likely pointing to
> garbage?
>
> Cheers,
> Reinoud
>
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