I guess what I'd like to see more than anything else is not raid5 or raid6 but raidN where N can be specified at the start and grown. While I'm not a fan of ZFS's rulebreaking one thing it does (or claims to do) strikes me as "the future" - the ability to specify X protection bits and to increase or decrease X as needs see fit. It also strikes me that there are several ways to do this but fundamentally it boils down to "we don't trust our drives anymore and there we wish to protect our data against their failure". Given 5 or 10 or 50 drives how does one really protect their data effectively and allow their data pool to grow without large quantities of hoop-jumping? I'd really like to see a re-thinking of data protection (parity or data duplication) at the block layer - it need not be RAID as we know it but IMO something has to be done - rapidly do we near the precipice! On Mon, Jan 19, 2009 at 1:03 PM, <thomas62186218@xxxxxxx> wrote: > I agree with Keld on the need for RAID 10 expansion and increasing RAID 10 > performance. Those are the hottest issues I see right now. > > -Thomas > > > -----Original Message----- > From: Keld Jørn Simonsen <keld@xxxxxxxx> > To: Neil Brown <neilb@xxxxxxx> > Cc: Janek Kozicki <janek_listy@xxxxx>; linux-raid@xxxxxxxxxxxxxxx > Sent: Mon, 19 Jan 2009 4:25 am > Subject: Re: Roadmap for md/raid ??? > > > > > > > > > > > I would like to see some enhancements to the raid code: > > 1. removal of need to set the readahead to say 32 MiB for certain > raid types to get the desired performance > > 2. getting resync and other performance up for raid10, possibly > using bigger buffers. > > 3. growing raid10. > > I wonder where this is placed in the roadmap. Neil? > > best regards > keld > -- > 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 > > > > > > -- > 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 > -- Jon -- 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
