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347643 |
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16-May-2019 |
asomers |
MFC r346847:
fsx: seed more randomly with the -S0 option
When using -S0, seed the PRNG with the current time in nanoseconds, not
seconds, so consecutive runs don't accidentally use the same seed.
Also, rename some variables for clarity.
Reviewed by: ngie
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D20078
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| #
258352 |
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19-Nov-2013 |
avg |
fsx: add an option to randomly call msync(MS_INVALIDATE)
This call should be a sufficiently close approximation of what happens
when a filesystem is unmounted and remounted. To be more specific, it
should test that the data that was in the page cache is the same data
that ends up on a stable storage or in a filesystem's internal cache,
if any.
This will catch the cases where a page with modified data is marked as
a clean page for whatever reason.
While there, make logging of the special events (open+close before
plus invalidation now) more generic and slightly better than the previous
hack.
MFC after: 10 days
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