Richard Elling wrote: > I was able to reproduce this in b93, but might have a different > interpretation of the conditions. More below... > > Ross Smith wrote: > >> A little more information today. I had a feeling that ZFS would >> continue quite some time before giving an error, and today I've shown >> that you can carry on working with the filesystem for at least half an >> hour with the disk removed. >> >> I suspect on a system with little load you could carry on working for >> several hours without any indication that there is a problem. It >> looks to me like ZFS is caching reads & writes, and that provided >> requests can be fulfilled from the cache, it doesn't care whether the >> disk is present or not. >> > > In my USB-flash-disk-sudden-removal-while-writing-big-file-test, > 1. I/O to the missing device stopped (as I expected) > 2. FMA kicked in, as expected. > 3. /var/adm/messages recorded "Command failed to complete... device gone." > 4. After exactly 9 minutes, 17,951 e-reports had been processed and the > diagnosis was complete. FMA logged the following to /var/adm/messages > Wow! Who knew that 17, 951 was the magic number... Seriously, this does seem like an "excessive amount of certainty".
-- paul _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
