On Sunday 27 January 2008 22:21, Neil Brown <neilb@xxxxxxx> wrote: > On Sunday January 27, russell@xxxxxxxxxxxx wrote: > > http://lists.debian.org/debian-devel/2008/01/msg00921.html > > > > Are they regarded as a stable feature? If so I'd like to see > > distributions supporting them by default. I've started a discussion in > > Debian on this topic, see the above URL for details. > > Yes, it is regarded as stable. Thanks for that information. > However it can be expected to reduce write throughput. A reduction of > several percent would not be surprising, and depending in workload it > could probably be much higher. It seems to me that losing a few percent of performance all the time is better than a dramatic performance loss for an hour or two when things go wrong. > It is quite easy to add or remove a bitmap on an active array, so > making it a default would probably be fine providing it was easy for > an admin to find out about it and remove the bitmap is they wanted the > extra performance. I hadn't realised that. So having this in the installer is not as important as I previously thought. -- russell@xxxxxxxxxxxx http://etbe.coker.com.au/ My Blog http://www.coker.com.au/sponsorship.html Sponsoring Free Software development - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
