Status of support for 4KB disk sectors
freebsd at jdc.parodius.com
Tue Jul 19 21:50:07 UTC 2011
On Tue, Jul 19, 2011 at 02:33:27PM -0700, Kevin Oberman wrote:
> On Tue, Jul 19, 2011 at 1:41 PM, Alexander Leidinger
> <Alexander at leidinger.net> wrote:
> > On Mon, 18 Jul 2011 16:41:24 -0700 Jeremy Chadwick
> > <freebsd at jdc.parodius.com> wrote:
> >> But the currently "known method" is to use gnop(8). ?Here's an
> >> example:
> >> http://www.leidinger.net/blog/2011/05/03/another-root-on-zfs-howto-optimized-for-4k-sector-drives/
> >> Now, that's for ZFS, but I'm under the impression the exact same is
> >> needed for FFS/UFS.
> > Info: gnop will not work for FFS/UFS because gnop is a temporary
> > solution (needs to be done by hand at each reboot). For FFS/UFS you
> > need to align the slice/partition and chose a good blocksize/fragsize
> > combination (e.g. 32k/4k).
> > Bye,
> > Alexander.
> > --
> > http://www.Leidinger.net ? ?Alexander @ Leidinger.net: PGP ID = B0063FE7
> > http://www.FreeBSD.org ? ? ? netchild @ FreeBSD.org ?: PGP ID = 72077137
> Thanks, Alexander.
> This is what I had expected after reading the man pages, though I
> would think -b 65560 -f 8192' would be a bit more reasonable in this
Where did this number come from? Did you mean 65536? 65560 would not
be properly aligned.
> day of bloated file formats. it's been years since I have hit a
> problem with lack of inodes. Probably around 1993 on an old
> SparcStation 1 running SunOS and then only due to a bad assumption I
> made when 'newfs'ing it.
> Again, thanks for the advice. At very least it will save me a bit of time!
Agreed -- thanks for the advice, Alexander.
| Jeremy Chadwick jdc at parodius.com |
| Parodius Networking http://www.parodius.com/ |
| UNIX Systems Administrator Mountain View, CA, US |
| Making life hard for others since 1977. PGP 4BD6C0CB |
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