dm cache: Documentation: update default migration_throttling value

In commit f8350daf7a ("dm cache: tune migration throttling") the
value for DEFAULT_MIGRATION_THRESHOLD was decreased from 204800 to
2048.  Edit device-mapper/cache.txt to reflect the correct default
value for migration_threshold.

Signed-off-by: John Pittman <jpittman@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
This commit is contained in:
John Pittman 2018-01-30 16:39:00 -05:00 коммит произвёл Mike Snitzer
Родитель f20426056f
Коммит 9614e2ba91
1 изменённых файлов: 1 добавлений и 1 удалений

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@ -119,7 +119,7 @@ doing here to avoid migrating during those peak io moments.
For the time being, a message "migration_threshold <#sectors>"
can be used to set the maximum number of sectors being migrated,
the default being 204800 sectors (100MB).
the default being 2048 sectors (1MB).
Updating on-disk metadata
-------------------------