Merge branch 'doc-multiple-persistence-overlays' into 'master'

Document the fact that persistence-label now accepts a list

See merge request live-team/live-boot!24

manpages/en/live-boot.7

@@ -159,8 +159,8 @@ live\-boot will look for persistency files in the root directory of a partition,
 Filesystem changes are not saved back to persistence media. In particular, overlays and netboot NFS mounts are mounted read-only.
 .IP "\fBpersistence\-storage\fR=\fITYPE1\fR,\fITYPE2\fR ... \fITYPEn\fR" 4
 This option determines which types of persistence storage to consider when probing for persistence media. If "filesystem" is in the list, filesystems with matching labels will be used; if "file" is in the list, all filesystems will be probed for archives and image files with matching filenames. The default is "file,filesystem".
-.IP "\fBpersistence\-label\fR=\fILABEL\fR" 4
-live-boot will use the name "LABEL" instead of "persistence" when searching for persistent storage. LABEL can be any valid filename, partition label, or GPT name.
+.IP "\fBpersistence\-label\fR=\fILABEL1\fR,\fILABEL2\fR ... \fILABELn\fR" 4
+live-boot will use the names in this list (instead of "persistence") when searching for persistent storage. Each LABEL can be a valid filename, partition label, or GPT name. The default is "persistence".
 .IP "\fBnoeject\fR" 4
 This option causes live\-boot to reboot without attempting to eject the media and without asking the user to remove the boot media.
 .IP "\fBshowmounts\fR" 4