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PendingReleaseNotes: note about cephfs backtrace updates

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Signed-off-by: Sage Weil <sage@inktank.com>
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Sage Weil 2014-02-12 17:42:16 -08:00
parent 9482850750
commit cc1e84490d
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PendingReleaseNotes
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v0.78
~~~~~
* CephFS recently added support for a new 'backtrace' attribute on
file data objects that is used for lookup by inode number (i.e., NFS
reexport and hard links), and will later be used by fsck repair.
This replaces the existing anchor table mechanism that is used for
hard link resolution. In order to completely phase that out, any
inode that has an outdated backtrace attribute will get updated when
the inode itself is modified. This will result in some extra workload
after a legacy CephFS file system is upgraded.