Committed. One question: + .reserved_first_sector = 1,
This line claims that overwriting first sector of nilfs won't destroy any data
or metadata. Is it so?
Jiro SEKIBA wrote:
> Hi,
>
> Thank you very much for the comments!
> I revised the patch to reflect the comments.
>
>
>> + {
>> + grub_error(GRUB_ERR_BAD_FS,"btree corruption\n");
>> + return -1;
>> + }
>> What do you think about possible fallback to iterate over all nodes in case
>> of fs corruption?
>>
>
> The case that btree is corrupted, it's very hard to take any action to recover
> because it is not possible to distinguish which block has meta data
> or which block has data without btree information.
>
> nilfs2 has ability to mount old checkpoint by specifying checkpoint number.
> So using old checkpoint is one of the possible fallback if all the blocks
> belonging to the old checkpoint is healthy. But it requires some more work.
>
> thanks,
>
> regards
>
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--
Regards
Vladimir 'φ-coder/phcoder' Serbinenko
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