Hi Roberto, could you share your setup? What chunksize did you use, e.g. How did you create it (if you can remember)? Thanks, Albert On 29 August 2013 15:11, Roberto Spadim <rspadim@xxxxxxxxx> wrote: > i use a raid10 far in revodrive cards, but i'm using kernel 3.10.7 > with slackware and it runs fine > > 2013/8/29 Albert Pauw <albert.pauw@xxxxxxxxx>: >> Hi guys, >> >> I am trying to get a RAID 10 configuration working at work, but seem >> to hit a performance wall after 20 minutes into a DB creation session. >> >> Here's the setup: >> >> OS: Oracle Linux 5.9 (effectively RHEL 5.9), kernel 2.6.32-400.29.2.el5uek. >> All utilities updates, mdadm (2.6.9 latest through updates). >> >> Setup: >> >> Two Fusion IO Duo cards, each Fusion IO device 640 GB, so four in total. >> >> Raid 10 set up as: >> >> striped between the two IO devices on the same Fusion IO card, and >> mirrored between the separate cards. >> >> So, Fusion IO card 1, device fioa and fiob, Fusion IO card 2, device >> fioc and fiod. >> >> The two stripes are fioa/fiob and fioc/fiod, and a mirror between these devices: >> >> mdadm --create --verbose /dev/md0 --level=10 --metadata=1.2 >> --chunk=512 --raid-devices=4 /dev/fioa /dev/fioc /dev/fiob /dev/fiod >> --assume-clean -N md0 >> >> When the performance turned out bad, after about 20 minutes, the >> process was stopped. I broke the mirror, so the md0 device is only >> striped, but the performance hit after 20 minutes happened again. >> >> The status of all cards are fine, no problems there. Then I created a >> fs on only one device and have it run again. This time it worked fine. >> The fs was in all cases ext3, no TRIM. >> >> Any suggestions, experience with this kind of setup? >> >> Thanks, >> >> Albert >> -- >> 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 > > > > -- > Roberto Spadim -- 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
