test code v1

2026-08-13 10:44:59 +02:00
commit f3b1165f19
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+# Test Case: Device Table Parse
+
+**Test ID**: TC096-device-table-parse  
+**Category**: Multi-Device  
+**Priority**: Critical
+
+## Objective
+
+Verify `extra_devices`, `devt_slotoff`, 48-bit `blocks`/`uniaddr`, table offset
+zero, `uniaddr=0`, statfs aggregation, and out-of-primary table rejection.
+
+## Generator field self-check
+
+Run `python3 -B tests/g6_multidev_fixtures.py verify OUTPUT` on the host.  The
+manifest must contain these independently reparsed values:
+
+| Fixture | primary blocks | extra | slot offset | slots `(blocks, uniaddr)` |
+| --- | ---: | ---: | ---: | --- |
+| `multi2` | 2 | 2 | 32 | `(137,2)`, `(90,139)` |
+| `multi2-devt0` | 2 | 2 | 0 | `(137,2)`, `(90,139)` |
+| `multi2-uniaddr0` | 2 | 2 | 32 | `(137,0)`, `(90,139)` |
+| `multi2-unified48` | 2 | 2 | 32 | high-word unified ranges |
+
+The exact slot sizes are generated values and must also match the current
+manifest if the source changes.
+
+## Standard table and statfs
+
+```sh
+I=/root/repo22-g6/images
+S=/root/repo22-g6/sources/chunk
+mkdir -p /mnt/g6
+kldload /root/repo22-g6/erofs.ko
+mdconfig -a -t vnode -f "$I/multi2-primary.erofs" -u 90
+mdconfig -a -t vnode -f "$I/multi2-slot1.blob" -u 91
+mdconfig -a -t vnode -f "$I/multi2-slot2.blob" -u 92
+mount -t erofs -o ro -o device.2=/dev/md92 -o device.1=/dev/md91 \
+  /dev/md90 /mnt/g6
+df -k /mnt/g6
+cmp "$S/cross-device.bin" /mnt/g6/cross-device.bin
+```
+
+The manifest `f_blocks` basis is `2 + 137 + 90 = 229` at 4096 bytes, so
+`df -k` must report 916 one-kilobyte blocks.
+
+## Positive table variants
+
+Unmount and detach units 92, 91, and 90 before each replacement primary.
+Mount each row with its two matching providers and compare the listed file:
+
+| Primary/provider prefix | Required check |
+| --- | --- |
+| `multi2-devt0` | table bytes at image offset 0; full `cross-device.bin` cmp |
+| `multi2-uniaddr0` | slot 1 selected by nonzero ID; full `cross-device.bin` cmp |
+| `multi2-unified48` | nonzero `uniaddr_hi` and `startblk_hi`; full `unified-address.bin` cmp |
+
+Use this direct command shape for each row, changing only `PREFIX`:
+
+```sh
+PREFIX=multi2-devt0
+umount /mnt/g6
+mdconfig -d -u 92
+mdconfig -d -u 91
+mdconfig -d -u 90
+mdconfig -a -t vnode -f "$I/$PREFIX-primary.erofs" -u 90
+mdconfig -a -t vnode -f "$I/$PREFIX-slot1.blob" -u 91
+mdconfig -a -t vnode -f "$I/$PREFIX-slot2.blob" -u 92
+mount -t erofs -o ro -o device.1=/dev/md91 -o device.2=/dev/md92 \
+  /dev/md90 /mnt/g6
+cmp "$S/cross-device.bin" /mnt/g6/cross-device.bin
+```
+
+For `multi2-unified48`, compare `unified-address.bin` instead.  Execute the
+block separately for all three prefixes; it is not a test runner.
+
+## Table outside the primary image
+
+After detaching the prior variant:
+
+```sh
+mdconfig -a -t vnode -f "$I/bad-table-oob.erofs" -u 90
+mdconfig -a -t vnode -f "$I/multi2-slot1.blob" -u 91
+mdconfig -a -t vnode -f "$I/multi2-slot2.blob" -u 92
+truss -f -o /tmp/tc096-oob.truss mount -t erofs -o ro \
+  -o device.1=/dev/md91 -o device.2=/dev/md92 /dev/md90 /mnt/g6
+tail -20 /tmp/tc096-oob.truss
+```
+
+Mount must return exactly `EINTEGRITY` before root vnode creation.
+
+## Cleanup and zero-state check
+
+```sh
+umount /mnt/g6 2>/dev/null || true
+mdconfig -d -u 92
+mdconfig -d -u 91
+mdconfig -d -u 90
+kldunload erofs
+mount -p | awk '$3 == "erofs" { print }'
+mdconfig -l
+kldstat -n erofs 2>/dev/null || true
+sysctl -n kern.geom.conftxt | grep -E 'md9[0-2]|erofs' || true
+```
+
+All four final outputs must be empty.