Hi Michael, thank you for your advice - looks nice, I never used "aufs" before - I will give a try. Kind Regards Jan. On Mon, Mar 18, 2013 at 7:55 PM, Michael Johnson - MJ <mj@xxxxxxxxx> wrote: > Sigh... failed to reply all... > > On Mon, Mar 18, 2013 at 11:52 AM, Michael Johnson - MJ <mj@xxxxxxxxx> wrote: >> Hi Jan, >> >> In that configuration, you should assume that a single disk failure >> will cause complete data loss. While some data may be recoverable, I >> don't believe btrfs gives you any guarantees in that regard. >> >> But, I have a suggestion for you that may be suitable for what you want. >> >> * Create 3 individual btrfs file systems, one on each disk. >> >> * Use 'aufs' to present these filesystems as if they were a single file system. >> >> I use a setup like this for data I don't consider important, but would >> rather not lose it all. This ensures that individual files are always >> completely contained on a single disk. It also has the additional >> advantage of preventing filesystem corruption from causing total data >> loss. >> >> >> On Mon, Mar 18, 2013 at 11:32 AM, Jan Beranek <jan233321@xxxxxxxxx> wrote: >>> Hi all, >>> I'm preparing a strorage pool for large data with quite low importance >>> - there will be at least 3 hdd in "-d single" and "-m raid1" >>> configuration. >>> >>> mkfs.btrfs -d single -m raid1 /dev/sda /dev/sdb /dec/sdc >>> >>> What happen if one hdd fails? Do I lost everything from all three >>> discs or only data from one disc? (if from only one disc, then is it >>> acceptable otherwise not...) >>> >>> I read all documentation and a lot of discussions on the web and >>> answer is not clear at all... >>> >>> Kind Regards >>> >>> Jan. >>> -- >>> To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in >>> the body of a message to majordomo@xxxxxxxxxxxxxxx >>> More majordomo info at http://vger.kernel.org/majordomo-info.html >> >> >> >> -- >> Michael Johnson - MJ > > > > -- > Michael Johnson - MJ -- S pozdravem Jan Beránek -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
