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Free space but not free space

I have a setup where I have my drives encrypted as LUKS partitions and lvm volumes and encrypted swap memory.
My root partition is 102GB and I've used 94GB and for some reason it's only free 2.2GB.

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df -h
Filesystem                   Size  Used Avail Use% Mounted on
dev                           10M     0   10M   0% /dev
run                          7.8G  2.5M  7.8G   1% /run
efivarfs                     128K   16K  108K  13% /sys/firmware/efi/efivars
/dev/mapper/MyVolGroup-root  102G   94G  2.2G  98% /
shm                          7.8G   27M  7.8G   1% /dev/shm
/dev/mapper/MyGroup-900ssd   880G  794G   41G  96% /mnt/hdd
tmpfs                        1.6G  2.4M  1.6G   1% /run/user/1003
/dev/sdd3                    948M  312K  882M   1% /mnt/usb

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lsblk
NAME                   MAJ:MIN RM   SIZE RO TYPE  MOUNTPOINTS
sda                      8:0    0 111.8G  0 disk  
sdb                      8:16   0 894.3G  0 disk  
└─crypt1tb             254:3    0 894.3G  0 crypt 
  └─MyGrupa-900ssd     254:4    0 894.3G  0 lvm   /mnt/hdd
sdc                      8:32   0 119.2G  0 disk  
└─cryptlvm             254:0    0 119.2G  0 crypt 
  ├─MyVolGroup-root    254:1    0 103.2G  0 lvm   /
  └─MyVolGroup-volSwap 254:2    0    16G  0 lvm   [SWAP]

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sudo lvs
  LV      VG         Attr       LSize    Pool Origin Data%  Meta%  Move Log Cpy%Sync Convert
  900ssd  MyGrupa    -wi-ao----  894.25g                                                    
  root    MyVolGroup -wi-ao---- <103.24g                                                    
  volSwap MyVolGroup -wc-ao----   16.00g  

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sudo vgs 
  VG         #PV #LV #SN Attr   VSize    VFree
  MyGrupa      1   1   0 wz--n-  894.25g    0 
  MyVolGroup   1   2   0 wz--n- <119.24g    0

/dev/mapper/MyVolGroup-root only has 2.2GB available for idk what reason. I tried to move a file in root and I didn't expect it to actually get an error of running out of storage.
Anyone knows what's causing this?
 

Re: Free space but not free space

Reply #2 –
Quote from: Ambie – on
Which FS are this partition? Ext4 has 5% reserved blocks by default. https://wiki.archlinux.org/title/Ext4#Reserved_blocks

all of them (root in cause) are ext4, i forgot to mention that sorry

Code: [Select]
sudo df -Th
Filesystem                  Type      Size  Used Avail Use% Mounted on
dev                         devtmpfs   10M     0   10M   0% /dev
run                         tmpfs     7.8G  2.5M  7.8G   1% /run
efivarfs                    efivarfs  128K   16K  108K  13% /sys/firmware/efi/efivars
/dev/mapper/MyVolGroup-root ext4      102G   82G   15G  86% /
shm                         tmpfs     7.8G   27M  7.8G   1% /dev/shm
/dev/mapper/MyGrupa-900ssd  ext4      880G  809G   27G  97% /mnt/hdd
tmpfs                       tmpfs     1.6G  2.4M  1.6G   1% /run/user/1003
/dev/sdd3                   ext4      948M  312K  882M   1% /mnt/usb