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iotests: Test qcow2's snapshot table handling
Add a test how our qcow2 driver handles extra data in snapshot table entries, and how it repairs overly long snapshot tables. Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-id: 20191011152814.14791-17-mreitz@redhat.com Signed-off-by: Max Reitz <mreitz@redhat.com>
This commit is contained in:
Max Reitz
Executable
+523
File diff suppressed because it is too large
Load Diff
@@ -0,0 +1,346 @@
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QA output created by 261
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=== Create v2 template ===
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Formatting 'TEST_DIR/t.IMGFMT.v2.orig', fmt=IMGFMT size=67108864
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No errors were found on the image.
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Snapshots in TEST_DIR/t.IMGFMT.v2.orig:
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[0]
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ID: 1
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Name: sn0
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Extra data size: 0
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[1]
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ID: 2
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Name: sn1
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Extra data size: 42
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VM state size: 0
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Disk size: 67108864
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Unknown extra data: very important data
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[2]
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ID: 3
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Name: sn2
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Extra data size: 8
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VM state size: 0
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=== Upgrade to v3 ===
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No errors were found on the image.
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Snapshots in TEST_DIR/t.IMGFMT.v3.orig:
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[0]
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ID: 1
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Name: sn0
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Extra data size: 16
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VM state size: 0
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Disk size: 67108864
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[1]
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ID: 2
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Name: sn1
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Extra data size: 42
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VM state size: 0
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Disk size: 67108864
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Unknown extra data: very important data
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[2]
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ID: 3
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Name: sn2
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Extra data size: 16
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VM state size: 0
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Disk size: 67108864
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=== Repair botched v3 ===
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Repairing snapshot table entry 0 is incomplete
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Repairing snapshot table entry 2 is incomplete
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The following inconsistencies were found and repaired:
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0 leaked clusters
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2 corruptions
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Double checking the fixed image now...
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No errors were found on the image.
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Snapshots in TEST_DIR/t.IMGFMT:
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[0]
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ID: 1
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Name: sn0
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Extra data size: 16
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VM state size: 0
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Disk size: 67108864
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[1]
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ID: 2
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Name: sn1
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Extra data size: 42
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VM state size: 0
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Disk size: 67108864
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Unknown extra data: very important data
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[2]
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ID: 3
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Name: sn2
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Extra data size: 16
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VM state size: 0
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Disk size: 67108864
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=== Add new snapshot ===
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No errors were found on the image.
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Snapshots in TEST_DIR/t.IMGFMT:
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[0]
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ID: 1
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Name: sn0
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Extra data size: 16
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VM state size: 0
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Disk size: 67108864
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[1]
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ID: 2
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Name: sn1
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Extra data size: 42
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VM state size: 0
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Disk size: 67108864
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Unknown extra data: very important data
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[2]
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ID: 3
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Name: sn2
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Extra data size: 16
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VM state size: 0
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Disk size: 67108864
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[3]
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ID: 4
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Name: sn3
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Extra data size: 16
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VM state size: 0
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Disk size: 67108864
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=== Remove different snapshots ===
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--- sn0 ---
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No errors were found on the image.
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Snapshots in TEST_DIR/t.IMGFMT:
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[0]
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ID: 2
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Name: sn1
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Extra data size: 42
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VM state size: 0
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Disk size: 67108864
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Unknown extra data: very important data
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[1]
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ID: 3
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Name: sn2
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Extra data size: 16
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VM state size: 0
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Disk size: 67108864
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--- sn1 ---
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No errors were found on the image.
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Snapshots in TEST_DIR/t.IMGFMT:
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[0]
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ID: 1
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Name: sn0
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Extra data size: 16
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VM state size: 0
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Disk size: 67108864
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[1]
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ID: 3
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Name: sn2
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Extra data size: 16
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VM state size: 0
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Disk size: 67108864
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--- sn2 ---
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No errors were found on the image.
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Snapshots in TEST_DIR/t.IMGFMT:
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[0]
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ID: 1
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Name: sn0
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Extra data size: 16
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VM state size: 0
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Disk size: 67108864
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[1]
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ID: 2
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Name: sn1
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Extra data size: 42
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VM state size: 0
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Disk size: 67108864
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Unknown extra data: very important data
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=== Reject too much unknown extra data ===
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qemu-img: Could not open 'TEST_DIR/t.IMGFMT': Too much extra metadata in snapshot table entry 3
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You can force-remove this extra metadata with qemu-img check -r all
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qemu-img: ERROR failed to read the snapshot table: Too much extra metadata in snapshot table entry 3
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You can force-remove this extra metadata with qemu-img check -r all
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qemu-img: Check failed: File too large
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Discarding too much extra metadata in snapshot table entry 3 (65536 > 1024)
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ERROR cluster 10 refcount=0 reference=1
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Rebuilding refcount structure
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Repairing cluster 1 refcount=1 reference=0
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Repairing cluster 2 refcount=1 reference=0
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The following inconsistencies were found and repaired:
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0 leaked clusters
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2 corruptions
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Double checking the fixed image now...
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No errors were found on the image.
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=== Snapshot table too big ===
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Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864
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qemu-img: Could not open 'TEST_DIR/t.IMGFMT': Snapshot table is too big
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You can force-remove all 1 overhanging snapshots with qemu-img check -r all
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qemu-img: ERROR failed to read the snapshot table: Snapshot table is too big
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You can force-remove all 1 overhanging snapshots with qemu-img check -r all
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qemu-img: Check failed: File too large
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Discarding 1 overhanging snapshots (snapshot table is too big)
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Leaked cluster 14 refcount=1 reference=0
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Leaked cluster 15 refcount=1 reference=0
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Leaked cluster 1039 refcount=1 reference=0
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Leaked cluster 1040 refcount=1 reference=0
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Repairing cluster 14 refcount=1 reference=0
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Repairing cluster 15 refcount=1 reference=0
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Repairing cluster 1039 refcount=1 reference=0
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Repairing cluster 1040 refcount=1 reference=0
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The following inconsistencies were found and repaired:
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4 leaked clusters
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1 corruptions
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Double checking the fixed image now...
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No errors were found on the image.
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507 snapshots should remain:
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qemu-img info reports 507 snapshots
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Image header reports 507 snapshots
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=== Snapshot table too big with one entry with too much extra data ===
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Snapshot table size should equal 67108872: 67108872
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qemu-img: Could not open 'TEST_DIR/t.IMGFMT': Too much extra metadata in snapshot table entry 505
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You can force-remove this extra metadata with qemu-img check -r all
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qemu-img: ERROR failed to read the snapshot table: Too much extra metadata in snapshot table entry 505
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You can force-remove this extra metadata with qemu-img check -r all
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qemu-img: Check failed: File too large
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Discarding too much extra metadata in snapshot table entry 505 (116944 > 1024)
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Discarding 1 overhanging snapshots (snapshot table is too big)
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Leaked cluster 1041 refcount=1 reference=0
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Leaked cluster 1042 refcount=1 reference=0
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Repairing cluster 1041 refcount=1 reference=0
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Repairing cluster 1042 refcount=1 reference=0
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The following inconsistencies were found and repaired:
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2 leaked clusters
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2 corruptions
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Double checking the fixed image now...
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No errors were found on the image.
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=== Too many snapshots ===
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Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864
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qemu-img: Could not open 'TEST_DIR/t.IMGFMT': Snapshot table too large
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qemu-img: ERROR snapshot table too large
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You can force-remove all 65536 overhanging snapshots with qemu-img check -r all
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qemu-img: Check failed: File too large
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Discarding 65536 overhanging snapshots
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Leaked cluster 14 refcount=1 reference=0
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Leaked cluster 15 refcount=1 reference=0
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Leaked cluster 56 refcount=1 reference=0
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Leaked cluster 57 refcount=1 reference=0
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Leaked cluster 58 refcount=1 reference=0
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Leaked cluster 59 refcount=1 reference=0
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Leaked cluster 60 refcount=1 reference=0
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Leaked cluster 61 refcount=1 reference=0
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Leaked cluster 62 refcount=1 reference=0
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Leaked cluster 63 refcount=1 reference=0
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Leaked cluster 64 refcount=1 reference=0
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Leaked cluster 65 refcount=1 reference=0
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Leaked cluster 66 refcount=1 reference=0
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Leaked cluster 67 refcount=1 reference=0
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Leaked cluster 68 refcount=1 reference=0
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Leaked cluster 69 refcount=1 reference=0
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Leaked cluster 70 refcount=1 reference=0
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Leaked cluster 71 refcount=1 reference=0
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Leaked cluster 72 refcount=1 reference=0
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Leaked cluster 73 refcount=1 reference=0
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Leaked cluster 74 refcount=1 reference=0
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Leaked cluster 75 refcount=1 reference=0
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Leaked cluster 76 refcount=1 reference=0
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Leaked cluster 77 refcount=1 reference=0
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Leaked cluster 78 refcount=1 reference=0
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Leaked cluster 79 refcount=1 reference=0
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Leaked cluster 80 refcount=1 reference=0
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Leaked cluster 81 refcount=1 reference=0
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Leaked cluster 82 refcount=1 reference=0
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Leaked cluster 83 refcount=1 reference=0
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Leaked cluster 84 refcount=1 reference=0
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Leaked cluster 85 refcount=1 reference=0
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Leaked cluster 86 refcount=1 reference=0
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Leaked cluster 87 refcount=1 reference=0
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Leaked cluster 88 refcount=1 reference=0
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Leaked cluster 89 refcount=1 reference=0
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Leaked cluster 90 refcount=1 reference=0
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Leaked cluster 91 refcount=1 reference=0
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Leaked cluster 92 refcount=1 reference=0
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Leaked cluster 93 refcount=1 reference=0
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Leaked cluster 94 refcount=1 reference=0
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Leaked cluster 95 refcount=1 reference=0
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Repairing cluster 14 refcount=1 reference=0
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Repairing cluster 15 refcount=1 reference=0
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Repairing cluster 56 refcount=1 reference=0
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Repairing cluster 57 refcount=1 reference=0
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Repairing cluster 58 refcount=1 reference=0
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Repairing cluster 59 refcount=1 reference=0
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Repairing cluster 60 refcount=1 reference=0
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Repairing cluster 61 refcount=1 reference=0
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Repairing cluster 62 refcount=1 reference=0
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Repairing cluster 63 refcount=1 reference=0
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Repairing cluster 64 refcount=1 reference=0
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Repairing cluster 65 refcount=1 reference=0
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Repairing cluster 66 refcount=1 reference=0
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Repairing cluster 67 refcount=1 reference=0
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Repairing cluster 68 refcount=1 reference=0
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Repairing cluster 69 refcount=1 reference=0
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Repairing cluster 70 refcount=1 reference=0
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Repairing cluster 71 refcount=1 reference=0
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Repairing cluster 72 refcount=1 reference=0
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Repairing cluster 73 refcount=1 reference=0
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Repairing cluster 74 refcount=1 reference=0
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Repairing cluster 75 refcount=1 reference=0
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Repairing cluster 76 refcount=1 reference=0
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Repairing cluster 77 refcount=1 reference=0
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Repairing cluster 78 refcount=1 reference=0
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Repairing cluster 79 refcount=1 reference=0
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Repairing cluster 80 refcount=1 reference=0
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Repairing cluster 81 refcount=1 reference=0
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Repairing cluster 82 refcount=1 reference=0
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Repairing cluster 83 refcount=1 reference=0
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Repairing cluster 84 refcount=1 reference=0
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Repairing cluster 85 refcount=1 reference=0
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Repairing cluster 86 refcount=1 reference=0
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Repairing cluster 87 refcount=1 reference=0
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Repairing cluster 88 refcount=1 reference=0
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Repairing cluster 89 refcount=1 reference=0
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Repairing cluster 90 refcount=1 reference=0
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Repairing cluster 91 refcount=1 reference=0
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Repairing cluster 92 refcount=1 reference=0
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Repairing cluster 93 refcount=1 reference=0
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Repairing cluster 94 refcount=1 reference=0
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Repairing cluster 95 refcount=1 reference=0
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The following inconsistencies were found and repaired:
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42 leaked clusters
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65536 corruptions
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Double checking the fixed image now...
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No errors were found on the image.
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65536 snapshots should remain:
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qemu-img info reports 65536 snapshots
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Image header reports 65536 snapshots
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*** done
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@@ -274,6 +274,7 @@
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257 rw
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258 rw quick
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260 rw quick
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261 rw
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262 rw quick migration
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263 rw quick
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264 rw
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