juju deploy cs:bcache-tuning
Helper charm for tuning of bcache block devices Read more
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This charm performs best-practice performance tuning of bcache devices on SD/NVMe based installations.
Cache Set Configuration
Disable performance based congestion behaviour - the SSD or NVMe will in all likelyhood always be faster than the underlying spindle:
congested_read_threshold_us: 0 congested_write_threshold_us: 0
Bcache Backing Device Configuration
Disable cache readahead:
Disable writethrough of sequential data writes:
Set the amount of dirty data the cache device will hold before starting to persist to the backing device:
Sets unmanaged cache_mode:
To use this charm, simple deploy and relation to principle services:
juju deploy bcache-tuning juju add-relation bcache-tuning ceph-osd juju add-relation bcache-tuning nova-compute
This charm presents no configuration options.