Christopher Collins created MYNEWT-164:
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Summary: NFFS - Restore fails when an object from a GCed area is
referenced
Key: MYNEWT-164
URL: https://issues.apache.org/jira/browse/MYNEWT-164
Project: Mynewt
Issue Type: Bug
Components: NFFS
Reporter: Christopher Collins
Assignee: Christopher Collins
Fix For: v0_8_0_beta2
(Credit for debugging this goes to Paul and Marko)
At the end of file system detection, a final sweep through the hash is
performed. During this sweep, any deleted inodes and their children are
removed from the hash. If an inode's child (data block if file; child inode if
directory) is not present in the hash, the procedure terminates prematurely,
leaving the hash in a corrupt state.
The sweep process should expect some child objects to be missing from the hash.
Since the child objects belong to a deleted inode, they are subject to garbage
collection. When an NFFS area is garbage collected, it may leave some objects
on disk with invalid references (this is not a problem, because these objects
are themselves deleted).
The fix is to ignore this error during the sweep.
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