Re: RAID1 sometimes have different data on the slave devices

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On 15/08/18 10:22, Danil Kipnis wrote:
> I had the naive understanding, that with raid5 one chunk goes to one
> drive, another - to the second and the XOR of them - to the third.
> Does it mean, with two drives, a chunk and a XOR have to go to the
> same drive? Don't mind, I should read the code, I know.

This is actually how you convert between different raid types. It's
strange, but parity for a single drive is just a copy of that drive ... :-)

And it's why, iirc, you can't go directly from raid-6 to most anything
else. You have to convert it to raid 5 and go from there ...

Cheers,
Wol



[Index of Archives]     [Linux RAID Wiki]     [ATA RAID]     [Linux SCSI Target Infrastructure]     [Linux Block]     [Linux IDE]     [Linux SCSI]     [Linux Hams]     [Device Mapper]     [Device Mapper Cryptographics]     [Kernel]     [Linux Admin]     [Linux Net]     [GFS]     [RPM]     [git]     [Yosemite Forum]


  Powered by Linux