Messages in this thread | | | Date | Sun, 25 Jun 2006 19:43:59 +0200 | From | Jens Axboe <> | Subject | Re: 2.6.17-ck1: fcache problem... |
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On Sun, Jun 25 2006, Paolo Ornati wrote: > On Sun, 25 Jun 2006 12:28:39 +0200 > Jens Axboe <axboe@suse.de> wrote: > > > > [ 26.673525] fcache: found serial 33, expected 34. > > > [ 26.673529] fcache: reprime the cache! > > > [ 26.673535] ext3: failed to open fcache (err=-22) > > > > Hmm, and you are sure that the fs is properly umounted on reboot? Or is > > it just remounted ro? It looks like fcache_close_dev() isn't being > > called, so the cache serial doesn't match what we expect from the fs, > > hence fcache bails out since it could indicate that the fs has been > > changed without fcache being attached. > > Ahh... it is the root fs and it's just remounted read-only by the > standard Gentoo scripts ;) > > I don't think that unmounting it is trivial (you need to chroot to a > virtual FS or something...). Does any distro do it?
ro should be enough, something odd must be going on. I'll add it to the list of things to test tomorrow.
> > What kind of speedup did you see? > > with cold caches... > > NORMAL > from Grub to KDM login 42"5 (~6" to reach init) > KDE 3.5.3 startup 10" > Firefox 7" > > FCACHE > from Grub to KDM login 31"4 (~6" to reach init) > KDE 3.5.3 startup 4" > Firefox 2"4
Very nice!
-- Jens Axboe
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