Files
podman/docs/source/markdown/podman-system-df.1.md
Paul Holzinger 69dc0720b9 docs: add note about systemd df RECLAIMABLE bug
Our calculation is just wrong and the way the entire API is designed it
cannot work. This is the same interface as docker is using and they have
the same bug there. So simply document this as known problem, in case
users complain we at least have something to point to.

An actual fix might be possible but not without reworking the full API
and because this is exposed in the docker compat and libpod REST API we
cannot really change it.

Signed-off-by: Paul Holzinger <pholzing@redhat.com>
2025-03-17 13:38:06 +01:00

2.9 KiB

% podman-system-df 1

NAME

podman-system-df - Show podman disk usage

SYNOPSIS

podman system df [options]

DESCRIPTION

Show podman disk usage for images, containers and volumes.

Note: The RECLAIMABLE size that is reported for images can be incorrect. It might report that it can reclaim more than a prune would actually free. This will happen if you are using different images that share some layers.

OPTIONS

--format=format

Pretty-print images using a Go template or JSON. This flag is not allowed in combination with --verbose

Valid placeholders for the Go template are listed below:

Placeholder Description
.Active Indicates whether volume is in use
.RawReclaimable Raw reclaimable size of each Type
.RawSize Raw size of each type
.Reclaimable Reclaimable size or each type (human-readable)
.Size Size of each type (human-readable)
.Total Total items for each type
.Type Type of data

--verbose, -v

Show detailed information on space usage

EXAMPLE

Show disk usage:

$ podman system df
TYPE            TOTAL   ACTIVE   SIZE    RECLAIMABLE
Images          6       2        281MB   168MB (59%)
Containers      3       1        0B      0B (0%)
Local Volumes   1       1        22B     0B (0%)

Show disk usage in verbose mode:

$ podman system df -v
Images space usage:

REPOSITORY                 TAG      IMAGE ID       CREATED       SIZE     SHARED SIZE   UNIQUE SIZE   CONTAINERS
docker.io/library/alpine   latest   5cb3aa00f899   2 weeks ago   5.79MB   0B            5.79MB       5

Containers space usage:

CONTAINER ID    IMAGE   COMMAND       LOCAL VOLUMES   SIZE     CREATED        STATUS       NAMES
073f7e62812d    5cb3    sleep 100     1               0B       20 hours ago   exited       zen_joliot
3f19f5bba242    5cb3    sleep 100     0               5.52kB   22 hours ago   exited       pedantic_archimedes
8cd89bf645cc    5cb3    ls foodir     0               58B      21 hours ago   configured   agitated_hamilton
a1d948a4b61d    5cb3    ls foodir     0               12B      21 hours ago   exited       laughing_wing
eafe3e3c5bb3    5cb3    sleep 10000   0               72B      21 hours ago   exited       priceless_liskov

Local Volumes space usage:

VOLUME NAME   LINKS   SIZE
data          1       0B

$ podman system df --format "{{.Type}}\t{{.Total}}"
Images          1
Containers      5
Local Volumes   1

SEE ALSO

podman(1), podman-system(1)

HISTORY

March 2019, Originally compiled by Qi Wang (qiwan at redhat dot com)