On Mon, Dec 22, 2008 at 3:10 PM, Sandeep K Sinha
<sandeepksinha@xxxxxxxxx> wrote:
> Hi pradeep,
>
> On Mon, Dec 22, 2008 at 2:54 PM, pradeep singh
> <pradeep.rautela@xxxxxxxxx> wrote:
>> On Sun, Dec 21, 2008 at 7:52 PM, Sandeep K Sinha
>> <sandeepksinha@xxxxxxxxx> wrote:
>> [snip]
>>>>
>>>
>>> When you say a file system as consistent, It means that you would be
>>> able to mount the filesystem. The superblock would be in the
>>> consistent state.
>>> The point is that even if you loose the data for a couple of files,
>>> still your file system will be up and you would be able to access the
>>> data for other files.
>>> If you loose the consistency of a file system( e.g superblock) then
>>> would loose everything.
>>>
>>> There are other tools that can be used to recover the data of a file
>>> or revert back the file to a consistent state but if you loose
>>> superblock then you land NOWHERE.
>>
>> Perfectly right but that may be a one off scenario. Usually modern
>> filesystems would keep multiple copies of superblock, so even if your
>> superblock is damaged you can still recover the fs to a sane state by
>> forcing fsck to use an alternative superblock.
>>
>> Hope this helps somehow.
>>
>
> No offense, but remember that fsck fails too.
> There are instances where this is possible.
Can you please describe any scenario, where this may happen?
One i can think of is when your /sbin is groked.
I wonder if this is the case, then what happens when fsck itself
cannot be invoked. though your superblock is intact you still cannot
have a sane state for your fs because effectively fsck is not there.
How do we handle such situations?
Any hints?
Thanks for the inputs Sandeep,
~Pradeep
>
> HTH,
>
>> Thanks,
>> ~Pradeep
>>>
>>>>
>>>> Thanks
>>>> Shyam.
>>>>
>>>
>>>
>>>
>>> --
>>> Regards,
>>> Sandeep.
>>>
>>>
>>>
>>>
>>>
>>>
>>> "To learn is to change. Education is a process that changes the learner."
>>>
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>>>
>>>
>>
>>
>>
>> --
>> Pradeep
>>
>
>
>
> --
> Regards,
> Sandeep.
>
>
>
>
>
>
> "To learn is to change. Education is a process that changes the learner."
>
--
Pradeep
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