OSTREE PREPARE-ROOT(1) ostree prepare-root OSTREE PREPARE-ROOT(1) (NAME) ostree-prepare-root - ostree (SYNOPSIS) ostree prepare-root {TARGET} (DESCRIPTION) ostree . ostree admin deploy . initramfs << >> . composefs . systemd initramfs . systemd : After=sysroot.mount Before=initrd-root-fs.target TARGET ( /sysroot) /sysroot << >> - . << >> /sysroot/sysroot . /var bind mount /sysroot/var . bind mount /sysroot/usr . ( chattr(1) ) . sysroot.readonly /sysroot/sysroot bind mount /sysroot/etc . systemd switch-root /sysroot / <<>> . ostree /sysroot << >> . (CONFIGURATION) /usr/lib/ostree/prepare-root.conf ( /etc/ostree/prepare-root.conf) ostree-prepare-root . initramfs . dracut . sysroot.readonly false composefs . true /sysroot . etc.transient false . true /etc . root.transient false . true composefs ( composefs.enabled ). / overlayfs tmpfs . etc.transient sysroot.readonly root.transient=true etc.transient=false /etc OSTree . /sysroot ( ) . /var . . ( ) / . root.transient-ro false . root.transient (upper) overlayfs . mount namespace . composefs.enabled yes no maybe signed verity . no . yes signed verity composefs . signed verity OSTree (digest) . signed . maybe composefs composefs . ostree composefs ( ) yes . composefs . composefs.keypath Ed25519 initramfs composefs.enabled signed . /etc/ostree/initramfs-root-binding.key . OSTree commitfs composefs . : ostree.prepare-root.composefs composefs.enabled ( ) . ostree.prepare-root.composefs=0 composefs initrd . (SYSTEMD) systemd ostree-prepare-root.service . (COMPOSEFS) ostree . composefs doc/composefs.md . OSTree OSTREE PREPARE-ROOT(1)