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Is there a way to defrag an ext4 file system?
Use e4defrag to defrag your files. If your ext4 file system is created with the extent option (it’s default in recent distros), you can use the e4defrag utility to check and defragment it online i.e. without umounting.
How to check fragmentation level of ext4 file system?
Use e4defrag to defrag your files If your ext4 file system is created with the extent option (it’s default in recent distros), you can use the e4defrag utility to check and defragment it online i.e. without umounting. Just check fragmentation level with something like this (you need to be root to see details): sudo e4defrag -c /path/to/myfiles
Can You deframent more than one ext4 partition?
So if you had more than one ‘ext4’ file systems mounted, then they too will be defragmented, thus, depending on their files and their sizes etc, it might take a long time. Deframenting mounted ‘ext4’ partitions manually?
Do you need to unmount Ubuntu to defrag ext4?
Also, note that you need to do as super-user only if you want to defragment without unmounting. Ubuntu 14.04 LTS does place (at least the primary drive) into EXT4 partition when installed on a clean install (not residing on top of Win-Junk).
Why is rsync suddenly hanging indefinitely during runtime?
The -p, -g, and -o switches seemed to be my root cause as rsync was barfing on one or all of those during runtime. Removing -a and specifying -Prltvc switches explicitly is working for me. I’ve been running into the same thing again and again and it seems to help if you drop the -v option (which is annoying if you need that output).
How to avoid a hang in macOS rsync?
Avoid a hang when an overabundance of messages clogs up all the I/O buffers. The only good workaround I can think of is, if the problem is not persistent, then put timeout in front of it: timeout rsync , then retry.