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diff --git a/gitlab/issues_text/target_missing/host_missing/accel_missing/1748 b/gitlab/issues_text/target_missing/host_missing/accel_missing/1748
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-qcow2: disk size exceeds virtual size
-Description of problem:
-Disk size of qcow2 image file exceeds its virtual size after repeatedly writing, and deleting data in qemu vm.
-Steps to reproduce:
-1. qemu-img create -f qcow2 tmp.qcow2 32M
-2. attach tmp.qcow2 as a device to qemu vm
-3. mount the device in qemu vm, and repeatedly writing, and deleting data
-Additional information:
-xml for attaching tmp.qcow2
-```xml
-   <disk device="disk" type="file">
-      <target bus="virtio" dev="vdb"/>
-      <source file="/path/to/tmp.qcow2"/>
-      <driver type="qcow2" name="qemu" cache="none" discard="unmap"/>
-   </disk>
-```
-in fact, set discard="unmap" or not seems has `little impact` on the final result.
-reproducible shell script.
-```sh
-#! /bin/sh
-
-for i in {1..1000}; do
-    for j in {1..27}; do
-        dd if=/dev/zero of=/mnt/test-$j bs=1M count=1 &
-    done
-    sync
-    sleep 10
-    rm -f /mnt/test-*   
-    fstrim /mnt
-done
-```
-MOUNT the device and run this script, problem happens about 30 minutes.
-
-final result looks like:
-```sh
-# qemu-img info tmp.qcow2 --force
-image: tmp.qcow2
-file format: qcow2
-virtual size: 32 MiB (33554432 bytes)
-disk size: 33 MiB
-cluster_size: 65536
-Format specific information:
-    compat: 1.1
-    compression type: zlib
-    lazy refcounts: false
-    refcount bits: 16
-    corrupt: false
-    extended l2: false
-Child node '/file':
-    filename: tmp.qcow2
-    protocol type: file
-    file length: 32.3 MiB (33882112 bytes)
-    disk size: 33 MiB
-    Format specific information:
-        extent size hint: 1048576
-```