| Subject: | Sys::Statistics::Linux::DiskUsage does not report magical NFS volume mounts |
The syntax being used for df does not show Linux's (optional) magical
NFS mounts that can be used instead of running NFS over the loopback
device to mount locally exported volumes. Unlikely regular --bind
mounts df can list these when passed the -a option. It would be nice to
list bind mounts as well but I don't believe the current version of df
can do this (the information is in /proc/mounts thou).
Eg.
jhoblitt@ipp019 ~ $ mountpoint /data/ipp019.0
/data/ipp019.0 is a mountpoint
jhoblitt@ipp019 ~ $ df -kP
Filesystem 1024-blocks Used Available Capacity Mounted on
/dev/sda3 31497116 6446864 23450252 22% /
udev 10240 160 10080 2% /dev
shm 4055452 0 4055452 0% /dev/shm
/dev/sda4 10651588352 8164829048 2379818540 78%
/export/ipp019.0
ipp004:/export/ipp004.0 10651598120 4575755504 5968901752 44%
/data/ipp004.0
jhoblitt@ipp019 ~ $ df -akP
Filesystem 1024-blocks Used Available Capacity Mounted on
/dev/sda3 31497116 6446864 23450252 22% /
proc 0 0 0 - /proc
sysfs 0 0 0 - /sys
udev 10240 160 10080 2% /dev
devpts 0 0 0 - /dev/pts
shm 4055452 0 4055452 0% /dev/shm
/dev/sda4 10651588352 8164829048 2379818540 78%
/export/ipp019.0
usbfs 0 0 0 - /proc/bus/usb
securityfs 0 0 0 -
/sys/kernel/security
nfsd 0 0 0 - /proc/fs/nfs
automount(pid7854) 0 0 0 - /data
automount(pid7868) 0 0 0 - /mnt
ipp004:/export/ipp004.0 10651598120 4575755504 5968901752 44%
/data/ipp004.0
/export/ipp019.0 10651588352 8164829048 2379818540 78%
/data/ipp019.0
jhoblitt@ipp019 ~ $ cat /proc/mounts
rootfs / rootfs rw 0 0
/dev/sda3 / ext3 rw,noatime,nodiratime,errors=continue,data=ordered 0 0
proc /proc proc rw,nosuid,nodev,noexec 0 0
sysfs /sys sysfs rw,nosuid,nodev,noexec 0 0
udev /dev tmpfs rw,nosuid,size=10240k,mode=755 0 0
devpts /dev/pts devpts rw,nosuid,noexec,gid=5,mode=620 0 0
shm /dev/shm tmpfs rw,nosuid,nodev,noexec 0 0
/dev/sda4 /export/ipp019.0 ext3
rw,nosuid,nodev,noatime,nodiratime,errors=continue,data=ordered 0 0
usbfs /proc/bus/usb usbfs rw,nosuid,noexec,devgid=85,devmode=664 0 0
securityfs /sys/kernel/security securityfs rw,nosuid,nodev,noexec 0 0
nfsd /proc/fs/nfs nfsd rw,nosuid,nodev,noexec 0 0
automount(pid7854) /data autofs
rw,fd=4,pgrp=7854,timeout=60,minproto=2,maxproto=4,indirect 0 0
automount(pid7868) /mnt autofs
rw,fd=4,pgrp=7868,timeout=60,minproto=2,maxproto=4,indirect 0 0
ipp004:/export/ipp004.0 /data/ipp004.0 nfs
rw,nosuid,vers=3,rsize=8192,wsize=8192,namlen=255,soft,nointr,proto=tcp,timeo=14,retrans=6,sec=sys,addr=166.122.172.18
0 0
/dev/sda4 /data/ipp019.0 ext3
rw,nosuid,nodev,noatime,nodiratime,errors=continue,data=ordered 0 0