David Magda wrote: > > Quite often swap and dump are the same device, at least in the > installs that I've worked with, and I think the default for Solaris > is that if dump is not explicitly specified it defaults to swap, yes? > Is there any reason why they should be separate? > > I beleive there are technical limitations with ZFS Boot that stop them from sharing the same Zvol.. > Having two just seems like a waste to me, even with disk sizes being > what they are (and growing). A separate dump device is only really > needed if something goes completely wrong, otherwise it's just > sitting there "doing nothing". If you're panicing, then whatever is > in swap is now no longer relevant, so over writing it is no big deal. > That said, with all the talk of dynamic sizing, If, during normal operation the swap Zvol has space allocated, and the Dump Zvol is sized to 0. Then during a panic, could the swap volume be sized to 0 and the dump volume expanded to whatever size?
This at least while still requireing 2 Zvol's would allow (even when the rest of the pool is short on space) a close approximation of the old behavior of sharing the same slice for both swap and dump. -Kyle > _______________________________________________ > zfs-discuss mailing list > zfs-discuss@opensolaris.org > http://mail.opensolaris.org/mailman/listinfo/zfs-discuss > _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
