On 18/12/15 00:23, Dave wrote: > df's output shows this on a standard run(df with no flags): > > Filesystem 1K-blocks Used Available Use% Mounted on > udev 1953632 4 1953628 1% /dev > tmpfs 400436 1216 399220 1% /run > /dev/sda1 957218452 302330152 606241340 34% / > none 4 0 4 0% /sys/fs/cgroup > none 5120 0 5120 0% /run/lock > none 2002168 8 2002160 1% /run/shm > none 102400 4 102396 1% /run/user > /dev/sdb1 957218452 302510240 606061252 34% /mnt/bkup/device2 > > But when I mount an external USB disk that's on /dev/sdc1, df shows this > output: > > Filesystem 1K-blocks Used Available Use% Mounted on > udev 1953632 4 1953628 1% /dev > tmpfs 400436 1272 399164 1% /run > /dev/sdc1 957218452 302334136 606237356 34% / > none 4 0 4 0% /sys/fs/cgroup > none 5120 0 5120 0% /run/lock > none 2002168 8 2002160 1% /run/shm > none 102400 4 102396 1% /run/user > /dev/sdb1 957218452 302498156 606073336 34% /mnt/bkup/device2 > /dev/sdc1 957218452 302564064 606007428 34% /mnt/bkup/externaldevice > > The filesystem of "/" has mysteriously changed (in appearance) to > /dev/sdc1?! All I did was mount the /dev/sdc1 device. In fact, > /dev/sdc1 is ONLY mounted at /mnt/bkup/externaldevice, and the mounted > filesystem on "/" is still /dev/sda1. I tested by writing a couple of > files, plus mount shows the correct info: > > /dev/sda1 on / type ext4 (rw,errors=remount-ro) > /dev/sdb1 on /mnt/bkup/device2 type ext4 (rw) > > If I unmount /mnt/bkup/externaldevice, df still shows /dev/sdc1 as the > "/" filesystem for a small amount of time (10-20 seconds) and then it > goes back to the correct filesystem of /dev/sda1. > > What is going on?? This only happened after upgrading to the package of > coreutils mentioned in the subject, it was not doing this previously. > Also, to note, the first two lines of the df output regarding udev and > tmpfs did not appear until this version either. I did see in the > changelog that df was updated to display some additional information, so > perhaps it has to do with that??
I see that ubuntu has backported _some_ patches from master. Perhaps they were incomplete. Could you please try out this latest df binary. wget http://www.pixelbeat.org/cu/df chmod a+x df ./df (There is a df.sig file is the same dir for gpg verification using the public key associated with this email address if desired) cheers, Pádraig.
