btrfs-progs: tests: fsck/037-freespacetree-repair workaround for missing kernel fix
Kernel patch ff51bf02d107 ("btrfs: block-group: fix free-space bitmap threshold") is needed to exercise both branches of the test, this can be detected by lack of the objectid and offset parsed from the dump. Issue: #288 Signed-off-by: David Sterba <dsterba@suse.com>
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@ -3,6 +3,9 @@
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# btrfs check is able to repair it. This tests correct detection/repair of
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# btrfs check is able to repair it. This tests correct detection/repair of
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# both a FREE_SPACE_EXTENT based FST and a FREE_SPACE_BITMAP based FST.
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# both a FREE_SPACE_EXTENT based FST and a FREE_SPACE_BITMAP based FST.
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# Note: this needs a patched kernel to exercise extents and bitmaps
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# ff51bf02d107 ("btrfs: block-group: fix free-space bitmap threshold")
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source "$TEST_TOP/common"
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source "$TEST_TOP/common"
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setup_root_helper
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setup_root_helper
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@ -32,6 +35,10 @@ corrupt_fst_item()
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offset=$("$TOP/btrfs" inspect-internal dump-tree -t 10 "$TEST_DEV" | \
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offset=$("$TOP/btrfs" inspect-internal dump-tree -t 10 "$TEST_DEV" | \
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grep -o "[[:digit:]]* FREE_SPACE_BITMAP [[:digit:]]*" | \
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grep -o "[[:digit:]]* FREE_SPACE_BITMAP [[:digit:]]*" | \
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cut -d' ' -f3 | tail -2 | head -1)
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cut -d' ' -f3 | tail -2 | head -1)
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if [ -z "$objectid" -o -z "$offset" ]; then
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_log_skipped "No bitmap to corrupt found, needs kernel patch"
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return 1
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fi
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_log "Corrupting $objectid,FREE_SPACE_BITMAP,$offset"
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_log "Corrupting $objectid,FREE_SPACE_BITMAP,$offset"
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elif [[ $type == "extent" ]]; then
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elif [[ $type == "extent" ]]; then
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type=199
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type=199
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@ -41,6 +48,10 @@ corrupt_fst_item()
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offset=$("$TOP/btrfs" inspect-internal dump-tree -t 10 "$TEST_DEV" | \
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offset=$("$TOP/btrfs" inspect-internal dump-tree -t 10 "$TEST_DEV" | \
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grep -o "[[:digit:]]* FREE_SPACE_EXTENT [[:digit:]]*" | \
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grep -o "[[:digit:]]* FREE_SPACE_EXTENT [[:digit:]]*" | \
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cut -d' ' -f3 | tail -2 | head -1)
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cut -d' ' -f3 | tail -2 | head -1)
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if [ -z "$objectid" -o -z "$offset" ]; then
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_log_skipped "No extent to corrupt found, needs kernel patch"
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return 1
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fi
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_log "Corrupting $objectid,FREE_SPACE_EXTENT,$offset"
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_log "Corrupting $objectid,FREE_SPACE_EXTENT,$offset"
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else
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else
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_fail "Unknown item type for corruption"
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_fail "Unknown item type for corruption"
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@ -69,8 +80,9 @@ done
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run_check_umount_test_dev
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run_check_umount_test_dev
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# now corrupt one of the bitmap items
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# now corrupt one of the bitmap items
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corrupt_fst_item "bitmap"
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if corrupt_fst_item "bitmap"; then
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check_image "$TEST_DEV"
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check_image "$TEST_DEV"
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fi
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# change the freespace such that we now have at least one free_space_extent
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# change the freespace such that we now have at least one free_space_extent
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# object
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# object
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@ -80,5 +92,6 @@ run_check $SUDO_HELPER fallocate -l 50m "$TEST_MNT/file"
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run_check_umount_test_dev
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run_check_umount_test_dev
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# now corrupt an extent
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# now corrupt an extent
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corrupt_fst_item "extent"
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if corrupt_fst_item "extent"; then
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check_image "$TEST_DEV"
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check_image "$TEST_DEV"
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fi
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