Re: [RFC] Rollback FS

[Richard Weinberger]

On Sun, Oct 20, 2013 at 1:37 PM, jiaweiwei <jiaweiwei.xiyou@xxxxxxxxx> wrote:
> On Sun, Oct 20, 2013 at 6:43 PM, Vyacheslav Dubeyko <slava@xxxxxxxxxxx> wrote:
>> Anyway, you need to use Copy-On-Write (COW) approach for such file system.
>> But there are file systems that implements snapshot approach yet: NILFS2, ext3cow,
>> Next3, and so on.
>>
>
> Any file system should rollback but not specific ones. Therefore, a
> VFS like mechanism should be designed and implemented.

-ENOPATCH

>> Do you really want to implement something likewise snapshot feature in a file system
>> from the scratch?
>>
>
> Maybe, I would give detail design, thanks.

Linux's next generation filesystem, btrfs, has already support for
file and volume level snapshots.

-- 
Thanks,
//richard
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