Device Mapper Cache Input Plugin
This plugin provide a native collection for dmsetup based statistics for dm-cache.
This plugin requires super-user permissions! Please make sure, Telegraf is
able to run sudo /sbin/dmsetup status --target cache without requiring a
password.
Introduced in: Telegraf v1.3.0 Tags: system OS support: linux
Global configuration options
In addition to the plugin-specific configuration settings, plugins support additional global and plugin configuration settings. These settings are used to modify metrics, tags, and field or create aliases and configure ordering, etc. See the CONFIGURATION.md for more details.
Configuration
# Provide a native collection for dmsetup based statistics for dm-cache
# This plugin ONLY supports Linux
[[inputs.dmcache]]
## Whether to report per-device stats or not
per_device = trueMetrics
- dmcache
- length
- target
- metadata_blocksize
- metadata_used
- metadata_total
- cache_blocksize
- cache_used
- cache_total
- read_hits
- read_misses
- write_hits
- write_misses
- demotions
- promotions
- dirty
Tags
- All measurements have the following tags:
- device
Example Output
dmcache,device=example cache_blocksize=0i,read_hits=995134034411520i,read_misses=916807089127424i,write_hits=195107267543040i,metadata_used=12861440i,write_misses=563725346013184i,promotions=3265223720960i,dirty=0i,metadata_blocksize=0i,cache_used=1099511627776ii,cache_total=0i,length=0i,metadata_total=1073741824i,demotions=3265223720960i 1491482035000000000Was this page helpful?
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