From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?ISO-8859-1?Q?Raphael_M=FCller?= Subject: Re: change from raid 5 to raid 6 interrupted Date: Sat, 23 Apr 2011 17:23:55 +0200 Message-ID: References: <4DB1991D.1090902@anonymous.org.uk> <4DB19D67.1040809@anonymous.org.uk> <20110423080613.14189094@notabene.brown> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: <20110423080613.14189094@notabene.brown> Sender: linux-raid-owner@vger.kernel.org To: NeilBrown Cc: John Robinson , Linux RAID List-Id: linux-raid.ids Ok thank you =3DD now it works again. but at very slow speed (~4000kb/s= ) normally this array brings nearly 70Mb/s. I tried different performance related stuff, like stripe_cache_size, readaheadbuffer but nothing could bring better performance. And i noticed that the newly added drive now is listed as spare rebuilding. is this normal? thanks Raphael 2011/4/23 NeilBrown : > On Fri, 22 Apr 2011 16:23:19 +0100 John Robinson > wrote: > >> (Please always remember to cc the list when replying; cc readded) >> >> On 22/04/2011 16:09, Raphael M=FCller wrote: >> > Ok i forgot to say, that the backup file is also gone... (my mista= ke) >> > >> > is this backup file the only option i got? >> >> Without the backup file you've almost certainly lost some data. I >> suspect there is a way of restarting the array and reshape without t= he >> backup file, but I don't know what it is - you'll have to wait for a >> proper guru to get back to you with an answer. >> > > With mdadm 3.2.1 there is a new flag "--invalid-backup". =A0It tells = mdadm that > you know that the backup file is invalid, but you want it to continue= anyway > (and risk having some corrupted data). > > You still need to give a backup file, but it can be a newly created e= mpty > file. > > So: > =A0# install mdadm 3.2.1 > =A0> /root/my-backup > =A0mdadm -A /dev/mdthing --backup-file=3D/root/my-backup =A0\ > =A0--invalid-backup /dev/device1 /dev/device2 .... > > should get you going again. > > NeilBrown > -- 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