On Tuesday 29 January 2008 20:13, Peter Rabbitson <rabbit+list@xxxxxxxxx> wrote: > Russell Coker wrote: > > Are there plans for supporting a NVRAM write-back cache with Linux > > software RAID? > > AFAIK even today you can place the bitmap in an external file residing on a > file system which in turn can reside on the nvram... True, and you can also put the journal of a filesystem on a NVRAM device. But that doesn't give the stripe aggregating benefits for RAID-5 or the general write-back cache benefits for everything else. -- russell@xxxxxxxxxxxx http://etbe.coker.com.au/ My Blog http://www.coker.com.au/sponsorship.html Sponsoring Free Software development - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html