• Goldwyn Rodrigues's avatar
    btrfs: Change qgroup_meta_rsv to 64bit · ce0dcee6
    Goldwyn Rodrigues authored
    Using an int value is causing qg->reserved to become negative and
    exclusive -EDQUOT to be reached prematurely.
    
    This affects exclusive qgroups only.
    
    TEST CASE:
    
    DEVICE=/dev/vdb
    MOUNTPOINT=/mnt
    SUBVOL=$MOUNTPOINT/tmp
    
    umount $SUBVOL
    umount $MOUNTPOINT
    
    mkfs.btrfs -f $DEVICE
    mount /dev/vdb $MOUNTPOINT
    btrfs quota enable $MOUNTPOINT
    btrfs subvol create $SUBVOL
    umount $MOUNTPOINT
    mount /dev/vdb $MOUNTPOINT
    mount -o subvol=tmp $DEVICE $SUBVOL
    btrfs qgroup limit -e 3G $SUBVOL
    
    btrfs quota rescan /mnt -w
    
    for i in `seq 1 44000`; do
      dd if=/dev/zero of=/mnt/tmp/test_$i bs=10k count=1
      if [[ $? > 0 ]]; then
         btrfs qgroup show -pcref $SUBVOL
         exit 1
      fi
    done
    Signed-off-by: default avatarGoldwyn Rodrigues <rgoldwyn@suse.com>
    [ add reproducer to changelog ]
    Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
    ce0dcee6
ctree.h 126 KB