Just following up on this... does anyone know if any of this is technically feasible even if not implemented/supported today?
Also, do any hardware RAID1 implementations offer something like the full btrfs checksum functionality? I've seen HP promoting their `Advanced Data Mirroring' in new Smart Array products, but I've got no idea if that is just a marketing gimmick, like the way they use the name `Advanced Data Guard' as a moniker for RAID6 Looking around in Google, I was pleasantly disturbed to find so many web sites (including some vendors) using the term `checksum' to refer to a parity bit On 22/08/12 13:05, Daniel Pocock wrote: > > > > It is well documented that btrfs data recovery (after silent corruption) > is dependent on the use of btrfs's own RAID1. > > However, I'm curious about whether any hardware RAID vendors are > contemplating ways to integrate more closely with btrfs, for example, > such that when btrfs detects a bad checksum, it would be able to ask the > hardware RAID controller to return all alternate copies of the block. > > Is this technically possible within any hardware RAID device today, even > though not implemented in btrfs? > > Has there been any suggestion that vendors would support this in future, > presumably for the benefit of btrfs, ZFS and other checksumming filesystems? > -- > To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in > the body of a message to majord...@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
