Re: GJournal

Antony Mawer wrote:
> On 4/10/2007 8:43 AM, LI Xin wrote:
>> Philip Murray wrote:
>>> Hi,
>>>
>>> I've got a 3TB volume that I really really want to avoid fscks on
>>> (they're taking 4-5hours on an exist 1.5TB volume) so Gjournal is
>>> looking good.
>>>
>>> Is it possible to make it only journal meta-data? Instead of data and
>>> meta-data (ie, like XFS, ext3 by default etc), it seems like you'd take
>>> less of a performance hit due to not having to write all the data twice.
>>
>> Not now.  gjournal now acts as a block-level journal provider which does
>> not distinguish between meta-data and file data.
> 
> Has anyone heard any more information on "BLUFFS" - the "BSD Logging 
> Updated Fast File System" that was mentioned at the May 2007 Developer 
> Summit? The only information I have been able to find is the PDF slides 
> from the presentation, which are here:
> 
> http://people.freebsd.org/~ups/pubs/asiabsdcon2007/asiabsdcon_slides_2007.pdf 
> 
> 
> The last slide states the anticipated testing date as Q1, slipped to 
> Q2... we are now in Q4 and the only thing I can find on BLUFFS is said 
> PDF above.
> 
> I do hold out hope for a proper journalled FS for FreeBSD, as while ZFS 
> is brilliant in many regards, it is very memory-heavy and as such not 
> suitable for all applications... at the same time, UFS is reaching the 
> stage where larger filesystems take hours or even days to fsck, or 
> sometimes fail altogether from lack of memory. While gjournal does 
> provide a partial solution, the penalty from having to write the data 
> out to disk twice is a limitation...

Last I heard from ups_at_, he was slammed with other things so BLUFFS was 
temporarily on hold.

Eric