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authorLennart Poettering <lennart@poettering.net>2021-02-03 21:50:27 +0100
committerLennart Poettering <lennart@poettering.net>2021-08-17 10:09:13 +0200
commit23851640b89ab16157e2938aa4d20edb5550a5c2 (patch)
treebf52eeb32510f1f303425c83e317cc9f73905157 /docs
parentimport-fs: make various options controllable via cmdline/env var (diff)
downloadsystemd-23851640b89ab16157e2938aa4d20edb5550a5c2.tar.xz
systemd-23851640b89ab16157e2938aa4d20edb5550a5c2.zip
docs: document how to turn off btrfs quota support in importd
Fixes: #18421 #15903
Diffstat (limited to '')
-rw-r--r--docs/ENVIRONMENT.md19
1 files changed, 19 insertions, 0 deletions
diff --git a/docs/ENVIRONMENT.md b/docs/ENVIRONMENT.md
index 2cec3bdc16..d2ab3baf68 100644
--- a/docs/ENVIRONMENT.md
+++ b/docs/ENVIRONMENT.md
@@ -316,3 +316,22 @@ fuzzers:
Note that is may be also useful to set `$SYSTEMD_LOG_LEVEL`, since all logging
is suppressed by default.
+
+systemd-importd:
+
+* `SYSTEMD_IMPORT_BTRFS_SUBVOL` – takes a boolean, which controls whether to
+ prefer creating btrfs subvolumes over plain directories for machine
+ images. Has no effect on non-btrfs file systems where subvolumes are not
+ available anyway. If not set, defaults to true.
+
+* `SYSTEMD_IMPORT_BTRFS_QUOTA` – takes a boolean, which controls whether to set
+ up quota automatically for created btrfs subvolumes for machine images. If
+ not set, defaults to true. Has no effect if machines are placed in regular
+ directories, because btrfs subvolumes are not supported or disabled. If
+ enabled, the quota group of the subvolume is automatically added to a
+ combined quota group for all such machine subvolumes.
+
+* `SYSTEMD_IMPORT_SYNC` – takes a boolean, which controls whether to
+ synchronize images to disk after installing them, before completing the
+ operation. If not set, defaults to true. If disabled installation of images
+ will be quicker, but not as safe.