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zfs: fixed assumptions about thin provisioning 

unlike lvm thin provisioning is fast and does not slow down the filesystem
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Jörg Thalheim 2017-01-30 12:25:04 +01:00 committed by GitHub
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engine/userguide/storagedriver/zfs-driver.md
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@ -315,12 +315,6 @@ storage media such as solid state devices (SSD). However, if you only have a
limited amount of SSD storage available it is recommended to place the ZIL on
SSD.
- **Use Data Volumes**. Data volumes provide the best and most predictable
performance. This is because they bypass the storage driver and do not incur
any of the potential overheads introduced by thin provisioning and
copy-on-write. For this reason, you should place heavy write workloads on data
volumes.
## Limiting your container's writable storage quota
If you want to implement a quota on a per-image/dataset basis, you can use