diff options
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/README.bootparams | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/docs/README.bootparams b/docs/README.bootparams index 4c324f2..356375d 100644 --- a/docs/README.bootparams +++ b/docs/README.bootparams @@ -30,17 +30,18 @@ INDEX performs a self-test of all files inside ${install_dir}, and continue booting if ok. Default: (unset) -* cow_label= Set the filesystem label where COW (dm-snapshot) - file must be stored. +* cow_label= Set the filesystem label where COW file (for dm-snapshot) + or upperdir/workdir files (for overlayfs) must be stored. Default: (unset) -* cow_device= Set the device node where COW (dm-snapshot) file - must be stored. +* cow_device= Like cow_label= but using device node. Default: (unset) or "/dev/disk/by-label/${cow_label}" * cow_directory= Set a directory inside ${cow_device}. Default: "/persistent_${archisolabel}/${arch}" * cow_persistent= Set if snapshot is persistent "P" or non-persistent "N". + Only used for dm-snapshot mode, ignored for overlayfs. Default: "N" (if no ${cow_device} is used) otherwise "P". -* cowfile_size= Set the size for COW file (dm-snapshot). +* cow_spacesize= Set the size for COW space (tmpfs). Valid for both + dm-snapshot and overlayfs mode. The argument is an integer and optional unit. Units are M,G (powers of 1024). Default: "256M" @@ -52,7 +53,8 @@ INDEX Size is in bytes (suffix with "k", "m" and "g") or in percentage of available RAM. Default: "75%" -* dm_snap_prefix= Set a prefix for device-mapper snapshot node names. +* dm_snap_prefix= Set a prefix for dm-snapshot node names. + Only used for dm-snapshot mode, ignored for overlayfs. Default: "arch" * arch= Force an architecture type (i686 | x86_64). Do not set it for normal operations. |