On Sat, Jan 19, 2013 at 11:14:09PM +0200, Brendan Hide wrote: > On 2013/01/19 08:06 PM, Gene Czarcinski wrote: > >Signed-off-by: Josef Bacik <jba...@fusionio.com> > >Signed-off-by: Gene Czarcinski <g...@czarc.net> > >--- > >-values are raid0, raid1, raid10 or single. > >+values are raid0, raid1, raid10, single or dup. Single device will have dup > >+set by default except in the case of SSDs which will default to single. > >This is > >+because SSDs can remap blocks internally so duplicate blocks could end up > >in the > >+same erase block which negates the benefits of doing metadata duplication. > Can't help but suggest that a "NO_DEDUP" command could be added to the SATA > Transport Protocol/SCSI Command set. Not sure where to submit that idea ... > :-/
You might get your answer from lkml, fsdevel or linux-scsi. david -- 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
