Hi SHOUJIN, The usage of cachefile in HAS+ is completed and will be available in next release of OHAC.
Thanks -Venku On 02/11/09 04:12, Robert Milkowski wrote: > Hello SHOUJIN, > > Sunday, February 8, 2009, 5:36:13 AM, you wrote: > > SW> I created a 2 nodes NFS cluster with ZFS+NFS. I used resource > SW> type SUNW.HAStoragePlus for Zpool. During failover, the zpool > SW> needs to be imported in 2nd node. > SW> Unfortunately, the "zpool import" is very slow (need about 2.5 > SW> minutes in my system). This caused the whole NFS service failover > SW> very slowly. I searched the ZFS document, there is a work acround > SW> can make the "zpool import" very fast: Set cache file for the > SW> pool, then use "zpool import -d FILE_NAME" to import from cache > SW> file. But I don't know how to add this kind of specail command > SW> line to HA cluster configuration so that the agent can call it > SW> when failover happens. Could anybody help on this? > > I don't believe that SC supports cachefile property currently - it > would be a good RFE. You should be able to implemente id yourself via > GDS if really needed - but first I would check what happens if you manually > import a pool with and without cachefile and compare timing. Then last > time I checked HAS+ does import actually twice (looks like first time > it is checking if pool is ok to import and if it is then it imports > again by going thru all the scanning, etc.). Then in recent nevada > build imports are happaning in a more parallel way - so instead of > reading labels one by one it happens in parallel - don't know if it > has been back ported to S10. >
