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serve nfs: make metadata files have special file handles

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Metadata files have the file handle of their source file with
0x00000001 suffixed in big endian so we can look them up directly from
their file handles.
This commit is contained in:
Nick Craig-Wood
2025-03-06 16:45:52 +00:00
parent fe84cbdc9d
commit 205667143c
5 changed files with 120 additions and 6 deletions
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6
cmd/serve/nfs/nfs.go
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@@ -169,6 +169,12 @@ Where |$PORT| is the same port number used in the |serve nfs| command
and |$HOSTNAME| is the network address of the machine that |serve nfs|
was run on.
If |--vfs-metadata-extension| is in use then for the |--nfs-cache-type disk|
and |--nfs-cache-type cache| the metadata files will have the file
handle of their parent file suffixed with |0x00, 0x00, 0x00, 0x01|.
This means they can be looked up directly from the parent file handle
is desired.
This command is only available on Unix platforms.
`, "|", "`") + vfs.Help(),