Gil wrote:
So for those of us using other filesystems (e.g. ext2/3), is there some way to determine whether or not barriers are available?
You'll see something like this in your system log if barriers are not supported:
Apr 3 16:44:01 adam kernel: JBD: barrier-based sync failed on md0 - disabling barriers
Otherwise, assume that they are. But like Neil said, it shouldn't matter to a user whether they are supported or not. Filesystems will work correctly either way.
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