cvs commit: src/sys/geom/mirror g_mirror.c

[Dmitry Morozovsky]

On Thu, 9 Mar 2006, Ruslan Ermilov wrote:

RE> > YMMV of course, but at work we prefer to mirror slices not disks.
RE>                                            ^^^^^^^^^^^^^
RE> > This way it's much more flexible -- you can have mirrored root,
RE> > unmirrored swap, stripped+mirrored data, etc.
RE> > 
RE> Err, I meant "mirror partitions" of course.  :-)

So do I. Hence, in standard mirror situation I have /dev/mirror/m0a from 
ad4a+ad6a for root, /dev/mirror/m0b from ad4b+ad6b for swap etc.

Troubles was with crashdumps, so earlier I'd reserve ad4d without file system 
to dump to. Now it should be a bit simplier.

To pjd@: idea from wild space: if one have to replace faulted disk he could 
have serious performance problems with syncing more than one gmirror/graid3 at 
a time. Maybe introduce a mechanism to suspend one or more sync process(es) 
when other are in progress? Or even max concurrency sync level?

Sincerely,
D.Marck                                     [DM5020, MCK-RIPE, DM3-RIPN]
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*** Dmitry Morozovsky --- D.Marck --- Wild Woozle --- marck at rinet.ru ***
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