jewel: mds: enforce a dirfrag limit on entries #10104
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This commit adds a new config option
mds_bal_fragment_size_max = 10000*10
which is an order of magnitude larger than mds_bal_split_size.
This limit prevents a fragment from getting too large which results in large
omap directories.
Right now the limit is enforced only in the RPC paths and in stray directory
entry creation.
Fixes http://tracker.ceph.com/issues/16164
Signed-off-by: Patrick Donnelly <pdonnell@redhat.com>
(cherry picked from commit 60af83c)
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@xiaoxichen I'm setting milestone jewel since this is targeting jewel really. If that's a mistake please let me know. |
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@jcsp does this backport look good to merge ? It passed the fs suite http://tracker.ceph.com/issues/16344#note-21 (except for unrelated valgrind failures and one transient failure that is, I believe, unrelated ). |
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This looks okay to me on a skim but hopefully Patrick can sign-off on this since John's on vacation another week. |
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@batrick ^ |
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http://tracker.ceph.com/issues/16560