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authorChristian Krinitsin <mail@krinitsin.com>2025-07-03 07:27:52 +0000
committerChristian Krinitsin <mail@krinitsin.com>2025-07-03 07:27:52 +0000
commitd0c85e36e4de67af628d54e9ab577cc3fad7796a (patch)
treef8f784b0f04343b90516a338d6df81df3a85dfa2 /results/classifier/gemma3:12b/files/941
parent7f4364274750eb8cb39a3e7493132fca1c01232e (diff)
downloadqemu-analysis-d0c85e36e4de67af628d54e9ab577cc3fad7796a.tar.gz
qemu-analysis-d0c85e36e4de67af628d54e9ab577cc3fad7796a.zip
add deepseek and gemma results
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+
+qemu-img cannot repair a qcow2 in an LV because size is mis-detected when qcow2 is on an LV
+Description of problem:
+This is RHEV with Tb's of VMs which need to be repaired due to a datacenter-wide (the real datacenter) power outage.
+
+Each of these VMs are on individual LVs but qemu-img check fails to perform repairs:
+
+
+```
+ERROR cluster 24481205 refcount=0 reference=1
+ERROR cluster 24481206 refcount=0 reference=1
+Rebuilding refcount structure
+ERROR writing refblock: No space left on device <============
+qemu-img: Check failed: No space left on device
+```
+
+Running qemu-img check or info on the LV (/dev/dm-*) works well but repairs cannot be completed:
+
+```
+# qemu-img info /dev/cdd4e215-8c6b-4877-b2be-fdba383e7eb0/fb32333b-2334-4e10-8c42-02bc97e826cc
+image: /dev/cdd4e215-8c6b-4877-b2be-fdba383e7eb0/fb32333b-2334-4e10-8c42-02bc97e826cc
+file format: qcow2
+virtual size: 1.5 TiB (1649267441664 bytes)
+disk size: 0 B <================================
+cluster_size: 65536
+Format specific information:
+    compat: 1.1
+    compression type: zlib
+    lazy refcounts: true
+    refcount bits: 16
+    corrupt: false
+    extended l2: false
+```
+Steps to reproduce:
+1. Have a damaged VM with its qcow2 in an LV
+2. run 'qemu-img check <device>' verify that it properly detects the blocks which need fixing.
+3. run 'qemu-img check -r all <device>', it exits with 'no space left on device“ after a few seconds.
+Additional information:
+https://bugzilla.redhat.com/show_bug.cgi?id=1519071
+
+
+Here is one example: