Ok thank you =D 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 <neilb@xxxxxxx>: > On Fri, 22 Apr 2011 16:23:19 +0100 John Robinson > <john.robinson@xxxxxxxxxxxxxxxx> wrote: > >> (Please always remember to cc the list when replying; cc readded) >> >> On 22/04/2011 16:09, Raphael Müller wrote: >> > Ok i forgot to say, that the backup file is also gone... (my mistake) >> > >> > 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 the >> 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". It 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 empty > file. > > So: > # install mdadm 3.2.1 > > /root/my-backup > mdadm -A /dev/mdthing --backup-file=/root/my-backup \ > --invalid-backup /dev/device1 /dev/device2 .... > > should get you going again. > > NeilBrown > -- 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
