This node's image storage configuration: the device-mapper geometry behind the read-only layer chain (dm-snapshot) and the per-VM writable layers (dm-thin).
chunk_sectors- dm-snapshot exception-store chunk size.thin_block_sectors- dm-thin pool allocation block size.thin_pool_data_size/thin_pool_meta_size- sparse sizes of the node's dm-thin pool backing devices.store- absolute path to the read-only layer store.
Summary
Functions
dm-snapshot exception-store chunk size, in 512-byte sectors (8 = 4 KiB). Standardised repo-wide; deltas must be created with this chunk size.
Absolute path to the read-only layer store. config.exs (store:) > [img] store
toml > <work_dir>/layers.
dm-thin pool data block size, in 512-byte sectors (128 = 64 KiB).
Sparse size of the node's dm-thin pool data device.
Sparse size of the node's dm-thin pool metadata device.
Functions
@spec chunk_sectors() :: pos_integer()
dm-snapshot exception-store chunk size, in 512-byte sectors (8 = 4 KiB). Standardised repo-wide; deltas must be created with this chunk size.
@spec store() :: Path.t()
Absolute path to the read-only layer store. config.exs (store:) > [img] store
toml > <work_dir>/layers.
@spec thin_block_sectors() :: pos_integer()
dm-thin pool data block size, in 512-byte sectors (128 = 64 KiB).
@spec thin_pool_data_size() :: Unit.Information.t()
Sparse size of the node's dm-thin pool data device.
@spec thin_pool_meta_size() :: Unit.Information.t()
Sparse size of the node's dm-thin pool metadata device.