Hi, long story short: it cant work with UFS Thanks to Darren Dunham and DJ Gregor > > Hello, > > > > 2 Solaris 8 02/04 machines connect to the same 35GB slice on > > an EMC symmetrix. > > Box1 mounts this slice RW, the other Box2 (of course) RO. > > You say "mount". Is this a filesystem? If so which one? > > Neither UFS nor the normal version of VxFS will support this. It can > cause simple problems all the way to panics on the RO machine. > > > This works so far, and I am seeing testfiles on both machines, > > so I really connect to the same slice (cannot control the EMC, btw). > > > > Yet, box1 writes a new file to the slice and this new file cannot > > be seen on box2 until I umount/mount the slice again. Same for any > > other metadata update. > > Correct. UFS/VxFS assumes one mounter only. So it never expects the > disk to be updated and that anything cached is always valid. > > > First I thought the kernel-cache on box2 is tricking me, so I mounted > > on box2 w/ ro,forcedirectio -> same effect. > > Can't do it. You'd need another filesystem to do this.... > > Veritas Cluster Filesystem > Sun's SAMFS > Sun's gfs (part of SunCluster I think?) > ADIC has a product. There's probably one or two others out there. > > > I am stuck here.. I was googling quite a while, but only found problems > > where the slice couldnt be seen on box2 at all - usually EMC-side config > > problems, so that didnt help me further. > > Also in Sun Cluster setups there would be a different kernel/drv/sd to > > be loaded. I didnt try that so far, since I do not know what the > > difference is and where to get this "other" sd kernel-module. > > > > From my understanding there's either callback hook missing by means that > > a write to the emc-slice will tell box2's sd to refresh metadata or > > it cannot work at all? > > Has nothing to do with EMC or anything. This is simply not supported > with UFS. > > http://www.sunmanagers.org/pipermail/summaries/2003-April/003605.html > http://www.sunmanagers.org/pipermail/summaries/2003-March/003330.html > -- Philipp Buehler, aka fips | <double-p> cvs -d /dev/myself commit -m "it's my life" dont/you/forget _______________________________________________ sunmanagers mailing list sunmanagers@sunmanagers.org http://www.sunmanagers.org/mailman/listinfo/sunmanagersReceived on Tue Dec 14 02:05:17 2004
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