So I formatted an external 8TB drive as ext4.
Did a reboot.
Then checked on it and got this:
Filesystem 1K-blocks Used Available Use% Mounted on
devtmpfs 774712 0 774712 0% /dev
tmpfs 899232 16868 882364 2% /run
/dev/vero-nand/root 14499760 10223996 3516164 75% /
tmpfs 899232 0 899232 0% /dev/shm
tmpfs 5120 0 5120 0% /run/lock
tmpfs 899232 0 899232 0% /sys/fs/cgroup
/dev/sda1 7811937256 94236 7811826636 1% /media/Seagate 8TB 3
tmpfs 179844 0 179844 0% /run/user/1000
osmc@osmc:~$ sudo tune2fs -l /dev/sda1 | grep 'Reserved block count'
Reserved block count: 0
I know it’s small, but any ideas why this would be?
Ext4 is a journaled filesystem and by nature quite complicated. That are reserved blocks
Just like with any filesystem, there is built in overhead. You will see the same with BTRFS, NTFS, FAT, etc.
None of the other drives I have formatted with ext4 have done that.
I just formatted an unused 4TB drive that I had handy with EXT4.
/dev/sdb1 3844628496 69636 3649193332 1% /media/brian/f5011889-aadb-40a0-bf1a-d835cbe411d6
or for more human readable
/dev/sdb1 3.6T 69M 3.4T 1% /media/brian/f5011889-aadb-40a0-bf1a-d835cbe411d6
So that’s totally normal for EXT4.
And just for fun, the same drive formatted with NTFS:
/dev/sdb1 3906982908 185216 3906797692 1% /media/brian/692CC38B6FFF6444
/dev/sdb1 3.7T 181M 3.7T 1% /media/brian/692CC38B6FFF6444
And more fun, reformat the drive as exFAT:
/dev/sdb1 3906982912 123392 3906859520 1% /media/brian/BB05-2DAD
/dev/sdb1 3.7T 121M 3.7T 1% /media/brian/BB05-2DAD
Weird that on other drives I have done as ext4 I have had 0% used after formatting.
Maybe I used some crazy settings on those previous formats.
But thinking about it now I don’t see how that would be possible.
Probably just me remembering incorrectly.
I’ll be formatting a different drive to ext4 tomorrow night so I’ll see what that one does.
We’ve had a longish exchange of words regarding reserved space etc. in this thread starting (for me) at
Best HDD format for Vero 4k+? (And how to do so!) - #37 by JimKnopf … till the end.
Just did another drive and same thing.
I must just be an idiot and remembered incorrectly with the other drives I’ve done.
So now I need to change the drive label.
e2label /dev/sda1 <label> and it didn’t give me an error or confirmation but then I checked and the label is still the same.
Am I missing something here?
Never mind, the change showed up after a reboot.