I think we should also (finally?) question the use of dump devices. IMHO, for servers or systems where data center best practices are applicable, dump devices are a good thing. For laptops, or the casual user, dump devices are a waste of space -- and being the only desktop/laptop OS vendor with a dump device is a competitive disadvantage. -- richard
Michael Shapiro wrote: >> On Wed 03 Oct 2007 at 10:19PM, Stephen Hahn wrote: >>> * Lori Alt <Lori.Alt at Sun.COM> [2007-10-04 05:11]: >>>> With the introduction of zfs as a root file system, we have the >>>> opportunity to change the system configuration set up by default >>>> on newly-installed systems. Up until now, the installation process >>>> has, by default, set up one slice to be used for both swap and dump. >>>> With the change to zfs as a root file system, we won't be setting up >>>> a separate slice for swap anymore. Instead, it will be a zvol within >>>> the pool. Perhaps we should take advantage of the fact that the >>>> nature of swap is changing anyway and also change the default >>>> configuration to have separate zvols for swap and dump. >>> Good idea--yes, please. >> I may be mistaken, but I thought that "dump to zpool" was a project >> unto itself-- that the ZFS team was planning on making something >> which allowed the set-aside of a contiguous region of the zpool. >> >> Otherwise, you're going to be modifying ZFS's metadata (i.e. allocating >> blocks, doing COWs, etc) in the dump path. Have you touched >> base with team ZFS to validate the assumption that this is safe/sane? >> >> -dp > > Dan is correct. ZFS no dumpy yet. The ZFS team is working on this, > but it is not currently possible to configure system safely with ZFS dump. > > -Mike >
