As with most database systems, the database files does not shrink when you delete data, the data is just removed/marked as deleted, and the space is reused. You’ll need to run db.repairDatabase() to compact space as noted here
The scponly shell may allow the quota command (if enabled). But it seems that you have the scponly configured to support the SFTP only, with a shell access disallowed. The SFTP protocol allows checking disk space (contrary to what other answers say). Extracting from the SFTP – check free space available question of stackoverflow.com: SFTP … Read more
Only newly written (appended) data is split between all currently active vdevs, there is no explicit rebalance operation in ZFS. Two possible solutions: Wait until all old data is written again (because of CoW, this can take a very long time, in the worst case double the time it would take to write the disk … Read more
find /proc/*/fd -ls 2> /dev/null | grep ‘(deleted)’ Find all opened file descriptors. Grep deleted. StdError to /dev/null Output: 160448715 0 lrwx—— 1 user user 64 Nov 29 15:34 /proc/28680/fd/113 -> /tmp/vteT3FWPX\ (deleted) Or you can use awk find /proc/*/fd -ls 2> /dev/null | awk ‘/deleted/ {print $11}’; awk output(tested in bash Ubuntu 12.04): /proc/28680/fd/113 … Read more
For any given extension you an use find /path -name ‘*.frq’ -exec ls -l {} \; | awk ‘{ Total += $5} END { print Total }’ to get the total file size for that type. And after some thinking #!/bin/bash ftypes=$(find . -type f | grep -E “.*\.[a-zA-Z0-9]*$” | sed -e ‘s/.*\(\.[a-zA-Z0-9]*\)$/\1/’ | sort … Read more
Don’t expect this to run quickly… cd to a directory where you suspect there might be a subdirectory with lots of inodes. If this script takes a huge amount of time, you’ve likely found where in the filesystem to look. /var is a good start… Otherwise, if you change to the top directory in that … Read more
I think you have something writing to a file that has been deleted from the drive but not yet closed by the application/server, so the space remains allocated on disk but can’t be seen by du since the file was removed from the filesystem. The lsof program lists processes that have files open. If you … Read more
Welcome to the world of BTRFS. It has some tantalizing features but also some infuriating issues. First off, some info on your setup, it looks like you have four drives in a BTRFS “raid 10” volume (so all data is stored twice on different disks). This BTRFS volume is then carved up into subvolumes on … Read more
Proper design I assume you are unable to simply extend the filesystem in question (using lvextend && ext2online), because you do not use LVM or use wrong filesystem type. Your approach What you’ve proposed might work if you signal the daemons with SIGHUP (kill -1 pid). Obviously you would need to later on “mount -o … Read more
I find ncdu (http://dev.yorhel.nl/ncdu) to be quite helpful for this.