salvage.lock - Prevents multiple simultaneous salvage operations on a partition
The
salvage.lock file guarantees that only one Salvager (
salvager
process) runs at a time on a file server machine (the single process can fork
multiple subprocesses to salvage multiple partitions in parallel). As the
Salvager initializes, it creates the empty (zero-length) file in the
/var/lib/openafs/local directory and invokes the
flock system
call on it. It removes the file when it completes the salvage operation.
Because the Salvager must lock the file to run, only one Salvager can run at a
time.
salvager(8)
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