On Sat, Jun 01, 2019 at 10:41:20AM -0700, Ross Boylan wrote: > df says my volume is 3G, but everything else says it's 4G. What's > going on and how can I correct it? > > This question concerns the total reported space, not the free space. > > The volume is an LVM logical volume on buster with an ext4 file > system. I originally mistakenly created it as 4TB in size. > Then I took it offline, resized the file system to 3G, resized the > logical volume to 4G, and then auto-resized (that is, ran resize2fs > without specifying an explicit size) the file system to 4G. When df > showed the size as 3G I thought it might be temporary, but it it > reports the same value after reboot. > > (If you're wondering: I resized to 3G first out of concern that the > file system requires a slightly larger "partition" than its own size, > and I didn't want to risk cutting off the end of the file system.) > > I thought there might have been a huge amount of reserved space or > journal from the original 4TB size, but the values in dumpe2fs appear > normal to me. > > Running buster. > > Thanks. > Ross > > # df -h /var/local/cache/ > Filesystem Size Used Avail Use% Mounted on > /dev/mapper/vgbarley-cache 3.0G 721M 2.1G 26% /var/local/cache > root@barley:~/tempserver/root# lvs vgbarley > LV VG Attr LSize Pool Origin Data% Meta% Move > Log Cpy%Sync Convert > cache vgbarley -wi-ao---- 4.00g > ## etc > # resize2fs /dev/vgbarley/cache > resize2fs 1.44.5 (15-Dec-2018) > The filesystem is already 1048576 (4k) blocks long. Nothing to do! > # So both LVM and e2fs utilities see 4G , even thouogh df reports 3G > What is the output of 'df -B4096'?
Regards, -Roberto -- Roberto C. Sánchez
