Ok, so it is possible to remove. Good to know, thanks . I move the pool maybe once a month for a few days, on an otherwise daily used fixed location. So thought the warm up allowance may be worth it. I guess I just wanted to know if adding a cache device was a one way operation or not and whether or not it risked integrity.
Sent from my iPhone On 13 Oct 2012, at 23:02, Ian Collins <i...@ianshome.com> wrote: > On 10/14/12 10:02, Michael Armstrong wrote: >> Hi Guys, >> >> I have a "portable pool" i.e. one that I carry around in an enclosure. >> However, any SSD I add for L2ARC, will not be carried around... meaning the >> cache drive will become unavailable from time to time. >> >> My question is.... Will random removal of the cache drive put the pool into >> a "degraded" state or affect the integrity of the pool at all? Additionally, >> how adversely will this effect "warm up"... >> Or will moving the enclosure between machines with and without cache, just >> automatically work, and offer benefits when cache is available, and less >> benefits when it isn't? > > Why bother with cache devices at all if you are moving the pool around? As > you hinted above, the cache can take a while to warm up and become useful. > > You should zpool remove the cache device before exporting the pool. > > -- > Ian. > _______________________________________________ zfs-discuss mailing list email@example.com http://mail.opensolaris.org/mailman/listinfo/zfs-discuss