From mboxrd@z Thu Jan 1 00:00:00 1970 From: Phil Turmel Subject: Re: RAID 5 "magicaly" become a RAID0 Date: Thu, 16 Apr 2015 08:25:57 -0400 Message-ID: <552FAA55.9010104@turmel.org> References: <552B0B58.8050102@turmel.org> <552BA12C.3010506@turmel.org> <552D08C0.1010106@turmel.org> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: Sender: linux-raid-owner@vger.kernel.org To: Thomas MARCHESSEAU , linux-raid@vger.kernel.org Cc: Roger Heflin List-Id: linux-raid.ids Good morning Thomas, On 04/16/2015 04:53 AM, Thomas MARCHESSEAU wrote: > Hi Team , >=20 >> >> Very good to hear this. > It crashed once , but after a reboot and re-assemble , i=B9ve backup= ed > _everything_ > =20 > -> Thank you very much for you support ! You're welcome. >> Yes, just --add a spare device to the array, then --grow --level=3D6= to >> start a live reshape. >=20 > I tryed , but it failed with many buffer I/O error , ( mostly on the = last > 4 drives , ( not sure , but seems hosted on the same chipset) > And now , i have tons of : > Buffer I/O error on device sdf , logical block 12 > =8A logical block 11 =8A and so on >=20 > Same on SDH =20 You mentioned a possibly loose sata cable causing the initial problem. I'm not so sure. I think you should check your power supply. The smartctl reports you supplied eliminate the most common problem, timeout mismatch, as you have nice raid-rated drives. The next most common problem I've seen is insufficient power, which is most apparent when writing. Add up all of the power consumption ratings of your hardware to make sure a new power supply is suitable. And if you have/get a multiple rail supply, make sure you spread the load across the independent circu= its. Phil -- To unsubscribe from this list: send the line "unsubscribe linux-raid" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html