--- On Wed, 16/9/09, Linux Raid Study <linuxraid.study@xxxxxxxxx> wrote: > From: Linux Raid Study <linuxraid.study@xxxxxxxxx> > Subject: LVM and Raid5 > To: linux-raid@xxxxxxxxxxxxxxx > Cc: linuxraid.study@xxxxxxxxx > Date: Wednesday, 16 September, 2009, 9:22 AM > Hello: > > Has someone experimented with LVM and Raid5 together (on > say, 2.6.27)? > Is there any performance drop if LVM/Raid5 are combined vs > Raid5 alone? > > Thanks for your inputs! > -- Hi, I cant remember what exact kernel version i am running but I have certainly noticed a difference. I have had the raid array set up for nearly 2 years and have only in the last 6 months become bothered/interested in optimising it. Someone suggested this: http://mbhtech.blogspot.com/2009/09/software-raid-vs-lvm-quick-speed-test_08.html My test concur with these results; I feel I would - in hindsight have not bothered with the LVM. BUT it does give me a flexability I would probably miss otherwise. I have not looked at optimising stripe sizes though - or any other optimisation really. ----------------------- N: Jon Hardcastle E: Jon@xxxxxxxxxxxxxxx 'Do not worry about tomorrow, for tomorrow will bring worries of its own.' ----------------------- -- 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
