To which disk error events are you referring? The NetApp disk driver code, QLogic SCSI driver code, and QLogic FC-AL driver code in the NetCache 3.3 release does appear to have code that should log messages for at least *some* disk error events. If there are significant errors that aren't getting messages logged, that's a bug (and, if such a bug was introduced, said bug might also be in filer code, unless it was fixed in our code base after the NetCache 3.3 release forked off from the main code line).
see below for 3.2 code disk errors, 3.3 does not seem to log these errors we were always getting such errors below at least once a week and told by our SE to ignore them as they were not significant. see below for example - once 3.3 code was installed errors vanished and I am sure physical hardware errors do not vanish overnight
Tue Jul 21 12:33:21 GMT [isp_main]: Disk 9a.1(0x8721a0): READ sector 818536 recovered error (1 18, 80)
Obviously it is very hard to prove 3.3 does not log disk errors since all NetAppCache machines we have are now running 3.3 code rev.
Colin Johnston SA PSINET UK