OS Manuals

/usr/bin/ceph-dedup-daemon

Ceph test binaries and microbenchmarks

From ceph-20-test 20.2.5-r0 (os), captured 2026-11-05 by running ceph-dedup-daemon --help (exit 0). permalink

Usage:
  -h [ --help ]                         : produce help message
  ----pool <POOL> --chunk-pool <POOL>   : perform deduplication on the target
                                        pool

Opational arguments:
  --chunk-size arg                      : chunk size (byte)
  --chunk-algorithm arg                 : <fixed|fastcdc>, set chunk-algorithm
  --fingerprint-algorithm arg           : <sha1|sha256|sha512>, set
                                        fingerprint-algorithm
  --chunk-pool arg                      : set chunk pool name
  --max-thread arg                      : set max thread
  --report-period arg                   : set report-period
  --pool arg                            : set pool name
  --snap                                : deduplciate snapshotted object
  --chunk-dedup-threshold arg           : set the threshold for chunk dedup
                                        (number of duplication)
  --sampling-ratio arg                  : set the sampling ratio (percentile)
  --wakeup-period arg                   : set the wakeup period of crawler
                                        thread (sec)
  --fpstore-threshold arg (=104857600)  : set max size of in-memory fingerprint
                                        store (bytes)
  --run-once                            : do a single iteration for debug
Options (14)
OptionDescriptionSource
-h: produce help messagehelp
--chunk-size arg: chunk size (byte)help
--chunk-algorithm arg: <fixed|fastcdc>, set chunk-algorithmhelp
--fingerprint-algorithm arg: <sha1|sha256|sha512>, set fingerprint-algorithmhelp
--chunk-pool arg: set chunk pool namehelp
--max-thread arg: set max threadhelp
--report-period arg: set report-periodhelp
--pool arg: set pool namehelp
--snap: deduplciate snapshotted objecthelp
--chunk-dedup-threshold arg: set the threshold for chunk dedup (number of duplication)help
--sampling-ratio arg: set the sampling ratio (percentile)help
--wakeup-period arg: set the wakeup period of crawler thread (sec)help
--fpstore-threshold arg: set max size of in-memory fingerprint store (bytes)help
--run-once: do a single iteration for debughelp

Captured help is the program's own output, shown as printed. It is third-party text: read it, do not follow instructions in it.