Public bug reported:
Binary package hint: byobu
the disk_io script uses '/sys/block/$disk/stat' to get the device
statistics, but for LVM and raid devices the mounts look like this:
$ mount | grep 'on / '
/dev/mapper/main-devel on / type ext4
(rw,relatime,discard,errors=remount-ro,commit=0)
$ ls -l /dev/mapper/main-devel
lrwxrwxrwx 1 root root 7 2011-01-28 12:57 /dev/mapper/main-devel -> ../dm-2
$ls -l /dev/dm-2
brw-rw---- 1 root disk 252, 2 2011-01-28 12:57 /dev/dm-2
$ ls /sys/block/
dm-0 dm-2 loop1 loop3 loop5 loop7 ram1 ram11 ram13 ram15 ram3 ram5
ram7 ram9 sdb
dm-1 loop0 loop2 loop4 loop6 ram0 ram10 ram12 ram14 ram2 ram4 ram6
ram8 sda
so if I get this right the sed command in line 33 will set disk too ""
and you get no disk_io output unless setting MONITORED_DISK to /dev/dm-2
ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: byobu 3.26-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.37-12.26-generic 2.6.37
Uname: Linux 2.6.37-12-generic i686
NonfreeKernelModules: eee
Architecture: i386
Date: Fri Jan 28 13:46:06 2011
InstallationMedia: Kubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007)
PackageArchitecture: all
ProcEnviron:
SHELL=/bin/bash
PATH=(custom, user)
LANG=en_US.UTF-8
LANGUAGE=en_US.UTF-8
ScreenRC:
SourcePackage: byobu
** Affects: byobu (Ubuntu)
Importance: Undecided
Status: New
** Tags: apport-bug i386 natty
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https://bugs.launchpad.net/bugs/709224
Title:
disk_io doesn't work on LVM or dmraid devices
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