Darren J Moffat wrote: > Jeff Bonwick wrote: > >> All that said, I'm still occasionally tempted to bring it back. >> It may become more relevant with flash memory as a storage medium. >> > > Would it be worth considering bring it back as part of zdb rather than > part of the core zio layer ? > >
I'm not convinced that single bit flips are the common failure mode for disks. Most enterprise class disks already have enough ECC to correct at least 8 bytes per block. By the time the disk sends something back that it couldn't correct, there is no telling how many bits have been flipped, but I'll bet a steak dinner it is more than one. There may be some benefit for path failures, but I've not seen any measured data on those failure modes. For paths which have framing checksums, we would expect them to be detected there. -- richard _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
