On Thu, 20 Aug 2009, Gregg Ferguson wrote:
First, I personally wouldn't bother mirroring my log devices. Solaris keeps one copy in main memory and the logged data is the 2nd copy. If the log fails, no worries, it still has the copy in main memory.
Wait, what? The only time the ZIL is read is during an import if there are unplayed log records. The only time you need to read the ZIL is after you've already lost the memory copy of your sync writes. So, yeah, there ARE going to be worries if you're importing a pool and you cannot open your log device.
Mirroring the slog gives you protection against a single drive failure. Regards, markm _______________________________________________ storage-discuss mailing list [email protected] http://mail.opensolaris.org/mailman/listinfo/storage-discuss
