lsof: WARNING: can't stat() tmpfs file system /newroot
      Output information may be incomplete.
lsof: WARNING: can't stat() iso9660 file system /newroot/mnt/cdrom
      Output information may be incomplete.
lsof: WARNING: can't stat() squashfs file system /newroot/mnt/livecd
      Output information may be incomplete.
lsof: WARNING: can't stat() proc file system /newroot/proc
      Output information may be incomplete.
lsof: WARNING: can't stat() sysfs file system /newroot/sys
      Output information may be incomplete.
lsof: WARNING: can't stat() tmpfs file system /newroot/dev
      Output information may be incomplete.
lsof: WARNING: can't stat() devpts file system /newroot/dev/pts
      Output information may be incomplete.
lsof: WARNING: can't stat() tmpfs file system /newroot/mnt/livecd/lib/firmware
      Output information may be incomplete.
lsof: WARNING: can't stat() tmpfs file system /newroot/mnt/livecd/usr/portage
      Output information may be incomplete.
lsof: WARNING: can't stat() usbfs file system /newroot/proc/bus/usb
      Output information may be incomplete.
lsof: status error on /mnt/gentoo: No such file or directory
lsof 4.76
 latest revision: ftp://lsof.itap.purdue.edu/pub/tools/unix/lsof/
 latest FAQ: ftp://lsof.itap.purdue.edu/pub/tools/unix/lsof/FAQ
 latest man page: ftp://lsof.itap.purdue.edu/pub/tools/unix/lsof/lsof_man
 usage: [-?abhlnNoOPRstUvVX] [+|-c c] [+|-d s] [+D D] [+|-f]
 [-F [f]] [-g [s]] [-i [i]] [+|-L [l]] [+m [m]] [+|-M] [-o [o]]
[-p s] [+|-r [t]] [-S [t]] [-T [t]] [-u s] [+|-w] [-x [fl]] [--] [names]
Use the ``-h'' option to get more help information.