On Wed, Dec 12, 2012 at 2:06 PM, <[email protected]> wrote: > On Wed, Dec 12, 2012, at 10:48, cwillu wrote: >> Sayeth the FAQ: > > Oh pardon me, it's BTRFS RAID that's a no-go, which is just as critical > to me as I have a 4 disk 8TB array. > The FAQ goeth on to Say: > ----------------------------------------------------------- > This pretty much forbids you to use btrfs' cool RAID features if you > need encryption. Using a RAID implementation on top of several encrypted > disks is much slower than using encryption on top of a RAID device. So > the RAID implementation must be on a lower layer than the encryption, > which is not possible using btrfs' RAID support. > ----------------------------------------------------------- > > You saw that I need RAID above. Were you just trying to criticize my > memory of the FAQ cwillu?
It's not asking for trouble, it's just asking for poor performance, and I suspect even that will depend greatly on the workload. Snapshots still have nothing to do with it: you could have btrfs (with snapshots) on dm-crypt on mdraid. Btrfs would just lose the ability to try alternate mirrors and similar; snapshots would still work just fine. -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
