Greg,
Again, you raise some interesting issues. I wonder how likely the
catastrophic failures you describe are, versus how likely it is that
things fail in a way where ccd actually helps you. I was hoping someone
else would comment on that, but that doesn't seem to have happened so
far.
So
Dear JCR,
Thank you for your informative message.
Things like HowTo documents, sites like openbsdsupport.org and lists
like openbsd-newbie@ are more often than not considered garbage. The
reason is simply because you are robbing the reader of the fundamental
and important details that the
http://inglorion.net/documents/tutorials/ccd/.
labeling section is wrong.
one MUST never use 'c' partition.
one MUST always make an 'a' (for example)
to skip first cylinder (at least).
That's true for real disks, but it doesn't seem to be true for ccd
devices. If it were true, ccdconfig
Of course, if somebody who
actually knew the implementation details about ccd could weigh in,
that would resolve the issue.
they just did.
http://www.openbsd.org/cgi-bin/cvsweb/src/sys/dev/ccd.c
Ok, thanks for pointing that out. I apologize for my uninformed
comments, especially to
On Fri, Nov 25, 2005 at 02:26:08PM +0100, mickey wrote:
On Fri, Nov 25, 2005 at 02:14:35PM +0100, Robbert Haarman wrote:
by using 'c' partition one may endup trashing real disk's label.
DO NOT USE 'c' PARTITION.
Ok, I'll change the HOWTO and add a FAQ entry ASAP. Apologies for not
believing
On Fri, Nov 25, 2005 at 04:50:34PM +0100, mickey wrote:
default 'c' type is unused.
at least on default systems...
On REAL disks, yes. On ccd disks, it seems to be different. Or maybe
ccdconfig screws it up.
2. The OpenBSD slices of my disks start at sector 24659775. This is also
where
Dear list, especially Greg and Mickey,
I've updated the working copy of the CCD Mirroring HOWTO. In particular,
I've split off the comparison to software RAID into a separate section
and clarified that ccd does not do automatic recovery, and I've
rewritten the section on labeling to state that
For those who are interested, I've uploaded a tutorial on setting up
mirroring using ccd(4) to http://inglorion.net/documents/tutorials/ccd/.
-- Bob
http://inglorion.net/documents/tutorials/ccd/
I have a few questions/comments about the above and about ccd
in OpenBSD in general.
1) You talk about RAID only works with whole disks? I'm curious
which RAID implementation you're referring to... it seems like you
might be talking about
9 matches
Mail list logo
