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 majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
