Package: munin Version: 2.0.0-1 Severity: normal Tags: upstream There's a problem with the df plugin on Wheezy OpenVZ guests though it's probably not limited to those.
OpenVZ on Squeeze exposes some "virtual" filesystems, including the quota-enhanced root filesystem and tmpfs, as "/dev/simfs" to the guest. This causes the df plugin to trip over since it expects all mount entries whose device name starts with a / to be unique and uses the device name as internal name. In squeeze and earlier this wasn't an issue since most guests usually had only one /dev/simfs entry, that being the root device. With wheezy /run and /run/lock are added, causing the problems as seen below. A possible mitigation mechanism could be to treat "/dev/simfs" entries the same like tmpfs entries and fall back on just using the mountpoint for those. Though I'm not sure that the outlook of OpenVZ warrants this hackaround. Here are the example /proc/mounts and "config df" outputs of two systems: Squeeze OpenVZ guest /dev/simfs / simfs rw,relatime 0 0 proc /proc proc rw,relatime 0 0 sysfs /sys sysfs rw,relatime 0 0 tmpfs /lib/init/rw tmpfs rw,nosuid,relatime,mode=755 0 0 tmpfs /dev/shm tmpfs rw,nosuid,nodev,relatime 0 0 devpts /dev/pts devpts rw,nosuid,noexec,relatime,gid=5,mode=620 0 0 /dev/simfs /run simfs rw,relatime 0 0 /dev/simfs /run/lock simfs rw,relatime 0 0 tmpfs /run/shm tmpfs rw,nosuid,nodev,relatime 0 0 _dev_simfs.label / _dev_simfs.warning 92 _dev_simfs.critical 98 _lib_init_rw.label /lib/init/rw _lib_init_rw.warning 92 _lib_init_rw.critical 98 _dev_shm.label /dev/shm _dev_shm.warning 92 _dev_shm.critical 98 _dev_simfs.label /run _dev_simfs.warning 92 _dev_simfs.critical 98 _dev_simfs.label /run/lock _dev_simfs.warning 92 _dev_simfs.critical 98 _run_shm.label /run/shm _run_shm.warning 92 _run_shm.critical 98 Squeeze on bare metal rootfs / rootfs rw 0 0 sysfs /sys sysfs rw,nosuid,nodev,noexec,relatime 0 0 proc /proc proc rw,nosuid,nodev,noexec,relatime 0 0 udev /dev devtmpfs rw,relatime,size=4092364k,nr_inodes=1023091,mode=755 0 0 devpts /dev/pts devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000 0 0 tmpfs /run tmpfs rw,nosuid,noexec,relatime,size=819720k,mode=755 0 0 /dev/mapper/VGroot-LVroot / ext3 rw,noatime,errors=remount-ro,barrier=1,data=ordered 0 0 tmpfs /run/lock tmpfs rw,nosuid,nodev,noexec,relatime,size=5120k 0 0 tmpfs /tmp tmpfs rw,nosuid,nodev,relatime,size=1639440k 0 0 proc /proc proc rw,nosuid,nodev,noexec,relatime 0 0 sysfs /sys sysfs rw,nosuid,nodev,noexec,relatime 0 0 tmpfs /run/shm tmpfs rw,nosuid,nodev,relatime,size=1639440k 0 0 debugfs /sys/kernel/debug debugfs rw,relatime 0 0 rootfs.label / rootfs.warning 92 rootfs.critical 98 _dev.label /dev _dev.warning 92 _dev.critical 98 _run.label /run _run.warning 92 _run.critical 98 _dev_mapper_VGroot_LVroot.label / _dev_mapper_VGroot_LVroot.warning 92 _dev_mapper_VGroot_LVroot.critical 98 _run_lock.label /run/lock _run_lock.warning 92 _run_lock.critical 98 _tmp.label /tmp _tmp.warning 92 _tmp.critical 98 _run_shm.label /run/shm _run_shm.warning 92 _run_shm.critical 98 all the best, Michael -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
