I think with later ZFS versions slog removal is supported and the pool stays up, not sure how this behaves with a complete slog failure though - possibly loose the cached data. Will do some more research on this.
On Sun, Jan 18, 2015 at 8:15 PM, Greg Zartman <[email protected]> wrote: > On Sat, Jan 17, 2015 at 10:44 PM, Peter Toth <[email protected]> > wrote: > >> Out of interest (not trying to steal the thread) what is the best >> practice with the number of slog devices, there are different ideas out >> there. Is one slog sufficient or should they be mirrored in a pair? >> > > I believe mirroring is the best practice so that if one SSD dies, you > don't lose any data before the slog has time to write to the zpool. My > experience with SSDs is that when they fail they are just gone; unlike an > HDD where you can often tease data off a drive that zfs kicks out of the > pool. Also; when a single slog dies, you lose your zpool and it's a real > pain to rebuild it. > > > > ------------------------------------------- smartos-discuss Archives: https://www.listbox.com/member/archive/184463/=now RSS Feed: https://www.listbox.com/member/archive/rss/184463/25769125-55cfbc00 Modify Your Subscription: https://www.listbox.com/member/?member_id=25769125&id_secret=25769125-7688e9fb Powered by Listbox: http://www.listbox.com
