On Thu, 20 Aug 2020 at 00:01, Eva Star <[email protected]> wrote: > Thanks for your reply. Unfortunately, not :( > I still have the problem when df -h /rw report one size and du other > size... :( > > [user@host rw]$ df -h /rw > Filesystem Size Used Avail Use% Mounted on > /dev/xvdb 2.0G 1.6G 341M 83% /rw > > [user@host rw]$ mount|grep xvdb > /dev/xvdb on /rw type ext4 (rw,relatime,discard) > /dev/xvdb on /home type ext4 (rw,relatime,discard) > /dev/xvdb on /usr/local type ext4 (rw,relatime,discard) > /dev/xvdb on /var/spool/cron type ext4 (rw,relatime,discard) > > [user@host rw]$ lsblk /dev/xvdb -f > NAME FSTYPE FSVER LABEL UUID FSAVAIL > FSUSE% MOUNTPOINT > xvdb ext4 1.0 c1ace105-12ee-495e-a340-*********** 340.2M 82% > /rw > > [user@host rw]$ sudo du --max-depth=1 -h /rw | sort -h > 16K /rw/bind-dirs > 16K /rw/lost+found > 20K /rw/config > 136K /rw/usrlocal > 736M /rw > 736M /rw/home > > As you can see df still report that 1.6G USED, but last command du > --max-depth=1 with sorting show that only 736 MB used. Lose 800MB > somewhere... :-( > > > > > Hi Eva,
There’s a few possible causes for the discrepancy between du and df, most commonly - du doesn’t always accurately measure size overheads. Usually this is negligible but if you have many (small) files this can add up. - if a process has a file open Linux will keep the data around on disk even if you delete the file until the process exits or closes the file. Here’s the best explanation I could find online https://www.ibm.com/support/pages/why-numbers-du-s-and-df-disagree (Technically it’s for AIX a different Unix flavour, but it’s all true for Linux, though some commands differ) > > > > -- > > > You received this message because you are subscribed to the Google Groups > "qubes-users" group. > > > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > > > To view this discussion on the web visit > https://groups.google.com/d/msgid/qubes-users/daedf9e0-89e8-45a2-82ae-c9e6ceadec16o%40googlegroups.com > <https://groups.google.com/d/msgid/qubes-users/daedf9e0-89e8-45a2-82ae-c9e6ceadec16o%40googlegroups.com?utm_medium=email&utm_source=footer> > . > > > -- -'Tias "There is an art, or rather a knack to flying. The knack lies in learning how to throw yourself at the ground and miss." ["Life, the universe and everything", Douglas Adams, 1982] "If a cluttered desk signs a cluttered mind, Of what, then, is an empty desk a sign?" [Albert Einstein] -- You received this message because you are subscribed to the Google Groups "qubes-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/qubes-users/CAGpfrqO6p97%3Dz7j0DtMjO7Yj_nPmkMj2-K4LDbrAXWk0jg-7ZA%40mail.gmail.com.
