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 committed by Mike Snitzer
parent f20426056f
commit 9614e2ba91
1 changed files with 1 additions and 1 deletions

View File

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