Where to start?
Oliver Fromme
olli at lurza.secnetix.de
Tue Jan 23 14:35:15 UTC 2007
Eric Anderson wrote:
> Oliver Fromme wrote:
> > Vasil Dimov wrote:
> > > This thing still looks to me like roping your chest to your leg (instead
> > > of to an unmovable object) in order to avoid falling, but I might be
> > > wrong...
> >
> > True, it's certainly not a clean nor efficient solution.
> > But Mike has a valid point that it would enable people to
> > turn on journaling on existing file systems, without the
> > need for repartitioning or adding a disk. It would be a
> > nice way to _quickly_ set up journaling, for testing
> > purposes, or simply for curiosity.
>
> Why not disable swap, use the swap partition as the new journaling
> device, and then enable vn-backed swap for the system?
Nice idea. Indeed, that would probably work, if the swap
is large enough to hold the journal.
By the way, what happens if you put a swap file on a
journaled file system? Will the page-out actions also
be journaled?
> > BTW, I think in Solaris you can also add journaling to an
> > existing UFS partition on the fly, without the need for
> > newfs or adding space. (Provided that there is enough
> > free space inside the existing file system, of course.)
>
> Sure - many journaling fs have that ability. There's been several
> attempts in the past to add journaling to our UFS2, without completion.
Yes, I know. But now there is PJD's gjournal. :-)
Best regards
Oliver
--
Oliver Fromme, secnetix GmbH & Co. KG, Marktplatz 29, 85567 Grafing
Dienstleistungen mit Schwerpunkt FreeBSD: http://www.secnetix.de/bsd
Any opinions expressed in this message may be personal to the author
and may not necessarily reflect the opinions of secnetix in any way.
"Python tricks" is a tough one, cuz the language is so clean. E.g.,
C makes an art of confusing pointers with arrays and strings, which
leads to lotsa neat pointer tricks; APL mistakes everything for an
array, leading to neat one-liners; and Perl confuses everything
period, making each line a joyous adventure <wink>.
-- Tim Peters
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