add warning re: changing value of `dm.basesize`.

Signed-off-by: Marc Tamsky <mtamsky@gmail.com> (github: tamsky)
This commit is contained in:
Marc Tamsky 2014-08-05 19:28:07 -07:00
parent 042b642d40
commit bd30746e07
1 changed files with 5 additions and 1 deletions

View File

@ -43,7 +43,11 @@ Here is the list of supported options:
10G. Note, thin devices are inherently "sparse", so a 10G device
which is mostly empty doesn't use 10 GB of space on the
pool. However, the filesystem will use more space for the empty
case the larger the device is.
case the larger the device is. **Warning**: This value affects the
system-wide "base" empty filesystem that may already be
initialized and inherited by pulled images. Typically, a change
to this value will require additional steps to take effect: 1)
stop `docker -d`, 2) `rm -rf /var/lib/docker`, 3) start `docker -d`.
Example use: