# This file is is the configuration file for all tools

# that use the containers/storage library.

# See man 5 containers-storage.conf for more information

# The "container storage" table contains all of the server options.

[storage]

​

# Default Storage Driver

driver = "overlay"

​

# Temporary storage location

runroot = "/var/run/containers/storage"

​

# Primary Read/Write location of container storage

graphroot = "/var/lib/containers/storage"

​

[storage.options]

# Storage options to be passed to underlying storage drivers

​

# AdditionalImageStores is used to pass paths to additional Read/Only image stores

# Must be comma separated list.

additionalimagestores = [

]

​

# Size is used to set a maximum size of the container image.  Only supported by

# certain container storage drivers.

size = ""

​

# Path to an helper program to use for mounting the file system instead of mounting it

# directly.

#mount_program = "/usr/bin/fuse-overlayfs"

​

# OverrideKernelCheck tells the driver to ignore kernel checks based on kernel version

# override_kernel_check = "false"

​

# mountopt specifies comma separated list of extra mount options

# mountopt = "nodev"

​

# Remap-UIDs/GIDs is the mapping from UIDs/GIDs as they should appear inside of

# a container, to UIDs/GIDs as they should appear outside of the container, and

# the length of the range of UIDs/GIDs.  Additional mapped sets can be listed

# and will be heeded by libraries, but there are limits to the number of

# mappings which the kernel will allow when you later attempt to run a

# container.

#

# remap-uids = 0:1668442479:65536

# remap-gids = 0:1668442479:65536

​

# Remap-User/Group is a name which can be used to look up one or more UID/GID

# ranges in the /etc/subuid or /etc/subgid file.  Mappings are set up starting

# with an in-container ID of 0 and the a host-level ID taken from the lowest

# range that matches the specified name, and using the length of that range.

# Additional ranges are then assigned, using the ranges which specify the

# lowest host-level IDs first, to the lowest not-yet-mapped container-level ID,

# until all of the entries have been used for maps.

#

# remap-user = "storage"

# remap-group = "storage"

​

# If specified, use OSTree to deduplicate files with the overlay backend

# ostree_repo = ""

​

# Set to skip a PRIVATE bind mount on the storage home directory.  Only supported by

# certain container storage drivers

# skip_mount_home = "false"

​

[storage.options.thinpool]

# Storage Options for thinpool

​

# autoextend_percent determines the amount by which pool needs to be

# grown. This is specified in terms of % of pool size. So a value of 20 means

# that when threshold is hit, pool will be grown by 20% of existing

# pool size.

# autoextend_percent = "20"

​

# autoextend_threshold determines the pool extension threshold in terms

# of percentage of pool size. For example, if threshold is 60, that means when

# pool is 60% full, threshold has been hit.

# autoextend_threshold = "80"

​

# basesize specifies the size to use when creating the base device, which

# limits the size of images and containers.

# basesize = "10G"

​

# blocksize specifies a custom blocksize to use for the thin pool.

# blocksize="64k"

​

# directlvm_device specifies a custom block storage device to use for the

# thin pool. Required if you setup devicemapper.

# directlvm_device = ""

​

# directlvm_device_force wipes device even if device already has a filesystem.

# directlvm_device_force = "True"

​

# fs specifies the filesystem type to use for the base device.

# fs="xfs"

​

# log_level sets the log level of devicemapper.

# 0: LogLevelSuppress 0 (Default)

# 2: LogLevelFatal

# 3: LogLevelErr

# 4: LogLevelWarn

# 5: LogLevelNotice

# 6: LogLevelInfo

# 7: LogLevelDebug

# log_level = "7"

​

# min_free_space specifies the min free space percent in a thin pool require for

# new device creation to succeed. Valid values are from 0% - 99%.

# Value 0% disables

# min_free_space = "10%"

​

# mkfsarg specifies extra mkfs arguments to be used when creating the base.

# device.

# mkfsarg = ""

​

# use_deferred_removal marks devicemapper block device for deferred removal.

# If the thinpool is in use when the driver attempts to remove it, the driver

# tells the kernel to remove it as soon as possible. Note this does not free

# up the disk space, use deferred deletion to fully remove the thinpool.

# use_deferred_removal = "True"

​

# use_deferred_deletion marks thinpool device for deferred deletion.

# If the device is busy when the driver attempts to delete it, the driver

# will attempt to delete device every 30 seconds until successful.

# If the program using the driver exits, the driver will continue attempting

# to cleanup the next time the driver is used. Deferred deletion permanently

# deletes the device and all data stored in device will be lost.

# use_deferred_deletion = "True"

​

# xfs_nospace_max_retries specifies the maximum number of retries XFS should

# attempt to complete IO when ENOSPC (no space) error is returned by

# underlying storage device.

# xfs_nospace_max_retries = "0"

​