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Update README

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Signed-off-by: Maksym Pavlenko <makpav@amazon.com>
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Maksym Pavlenko 2019-02-22 11:10:51 -08:00
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@ -24,10 +24,6 @@ The following configuration flags are supported:
default location for `containerd` plugins will be used) default location for `containerd` plugins will be used)
* `pool_name` - a name to use for the devicemapper thin pool. Pool name * `pool_name` - a name to use for the devicemapper thin pool. Pool name
should be the same as in `/dev/mapper/` directory should be the same as in `/dev/mapper/` directory
* `data_device` - path to the data volume that should be used by the thin pool
* `meta_device` - path to the metadata volume that should be used by the thin-pool
* `data_block_size` - the size of allocation chunks in data file, between 128
sectors (64KB) and and 2097152 sectors (1GB) and a multiple of 128 sectors (64KB)
* `base_image_size` - defines how much space to allocate when creating the base device * `base_image_size` - defines how much space to allocate when creating the base device
Pool name and base image size are required snapshotter parameters. Pool name and base image size are required snapshotter parameters.
@ -42,5 +38,5 @@ ctr run --snapshotter devmapper docker.io/library/hello-world:latest test
## Requirements ## Requirements
The devicemapper snapshotter requires `dmsetup` command line tool to be installed and available on your computer. The devicemapper snapshotter requires `dmsetup` (>= 1.02.110) command line tool to be installed and
On Ubuntu, it can be installed with `apt-get install dmsetup` command. available on your computer. On Ubuntu, it can be installed with `apt-get install dmsetup` command.