$ df -h -x tmpfs
Filesystem Size Used Avail Use% Mounted on
devtmpfs 7.7G 0 7.7G 0% /dev
/dev/mapper/fedora_localhost--live-root 18G 11G 6.5G 62% /
/dev/nvme0n1p3 191G 101G 91G 53% /mnt/c
/dev/nvme0n1p8 578M 153M 395M 28% /boot
/dev/mapper/fedora_localhost--live-usr_local 5.5G 1.2G 4.1G 23% /usr/local
/dev/mapper/fedora_localhost--live-home 238G 211G 16G 94% /home
/dev/nvme0n1p7 95M 21M 75M 22% /boot/efi
Where is the remaining 10 G in the partition /home?
IIRC Linux reserves a small portion of every partition (file system) for system use to be able to use if needed for bad blocks, etc…
I have a 3.0T lvm partition that has 2.1T used and 729G available (or only bout 2.8T usable with 200G system reserved). I would not worry about that apparent discrepancy especially since your post shows numbers when booted as live-user instead of as the regular user on the installed system.
That said though, any file system that is 90% and more full will quickly start having problems with slowdowns and fragmentation as the system tries to find space for new and growing files.
[Unix/Linux]automatically reserves 5% of space for superuser access – meaning regular users and processes won’t be able to use this space (filesystem will report to be 100% full), but root user can still write and troubleshoot. (Unixtutorial)
The article linked above also has examples how to tune the file system to change the default value of 5% to less.
I see. Thank you two very much.
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