Date: 18 Dec 2001 11:40:38 -0600 From: Ryan Dooley <dooleyr@missouri.edu> To: hawkeyd@visi.com Cc: dreyenga@telus.net, hackers@freebsd.org Subject: Re: Instead of JFS, why not a whole new FS? Message-ID: <1008697238.4756.2.camel@karma.iats.missouri.edu> In-Reply-To: <200112172325.fBHNP7S55235@sheol.localdomain> References: <001301c1874d$50ae0d20$02000003_tornado@ns.sol.net> <200112172325.fBHNP7S55235@sheol.localdomain>
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=20
> UFS/FFS is/are proven through time. Throw in the softupdates technology,
> and you have the upside of journalling, without the downside of journalli=
ng.
> No. I'm not going into details, first because I'm not qualified, and seco=
nd,
> others already have.
I think the bottom line to this whole thread is most folks out there
want a quick recovery (i.e., fast fsck's for large volumes). =20
I'm one of those folks who's gotten used to {XFS, JFS, EXT3, ReiserFS,
AdvFS, etc.}. Sure, journaling has it's issues (and I'm no expert), but
still having to wait for a fsck is a pain on large volumes, where as
waiting X number of seconds for a journal log replay is much easier to
contend with. =20
I've got a 891GB volume that's about 20% full, that takes 90 minutes or
so to fsck (and that's on a fiber channel, hardware RAID1+0 array). I'm
glad softupdates ensure the integrity of my data, but the wait is killer
in this production system :-)
> The one thing that journalling FSes deliver that FFS with softupdates doe=
sn't
> right now is a 'fsck'less boot after an uncontrolled shutdown. I have rea=
d
> that the Project has this on their TODO list.
Yep... that's it exactly. I can't wait for 5.x (or fsck -B to be MFC'd
from -CURRENT :-)
Cheers,
Ryan
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