On 24/05/15 15:06, Mikael Abrahamsson wrote:

On Sun, 24 May 2015, Wols Lists wrote:

quoted

And if you get read errors, well, aiui, raid won't help here either -
especially with mirrored raid, you just get a read failure. Raid does
NOT give you error recovery unless the drive physically fails, and if
it's a bad block it gets fixed at the disk or disk driver level - well
below the raid driver.

You're wrong. In case of a read error from the physical drive on RAID1,
RAID5 or RAID6 then the information will be re-created from another
drive, and written to the drive that threw a read error. This is the
whole point of RAID with parity information.

Except raid 1 isn't parity ... :-)

Personally, I still don't think "raid"ing swap is worth it, though.
Horses for courses, ram is cheap, and in my circumstances I don't think
I'd gain anything.

Cheers,
Wol