On Wed, 2014-01-01 at 14:02 +1300, Pieter De Wit wrote: > On 1/01/2014 13:51, Krzysztof Adamski wrote: > > I have a system with two drives like this: > > / RAID1 on sda3 and sdb3 > > /boot RAID1 on sda1 and sdb1 > > > > I would like to migrate to > > / RAID6 on sdi3, sdj3 and sdh3 > > /boot RAID1 on sdi1, sdj1 and sdh1 > > > > The /boot already done. > > How would I do the migration to RAID6? > > > > The new drives i,j and h are larger then a and b, after the migration I > > will reshape the raid to use all the space on the new raid, unless it is > > possible to do it in one step. > > > > The reason I want RAID6 and not RAID1 with 3 drives is that later I may > > add more drives to the array. > > > > Currently I don't trust any RAID that has only one parity drive, it has > > to survive a failure of any two drives. So RAID6 or triple RAID1 are a > > minimum. > > > > Thanks in advance, > > K > > > > -- > > 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 > Hi, > > RAID Level 6 requires a minimum of 4 drives to implement > > Cheers, > > Pieter I have seen messages by Neil from 2011 that he was planning to remove this silly minimum requirement of 4 drive for RAID6. -- 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
