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btrfs: selftests: add test for punching a hole into 3 RAID stripe-extents

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Test creating a range of three RAID stripe-extents and then punch a hole
in the middle, deleting all of the middle extents and partially deleting
the "book ends".

Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Johannes Thumshirn 2025-01-13 20:31:54 +01:00 committed by David Sterba
parent 27ae15b25b
commit cfda28fb70
1 changed files with 183 additions and 0 deletions
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183
fs/btrfs/tests/raid-stripe-tree-tests.c
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@ -31,6 +31,188 @@ static struct btrfs_device *btrfs_device_by_devid(struct btrfs_fs_devices *fs_de
return NULL;
}
/*
* Test creating a range of three extents and then punch a hole in the middle,
* deleting all of the middle extents and partially deleting the "book ends".
*/
static int test_punch_hole_3extents(struct btrfs_trans_handle *trans)
{
struct btrfs_fs_info *fs_info = trans->fs_info;
struct btrfs_io_context *bioc;
struct btrfs_io_stripe io_stripe = { 0 };
u64 map_type = RST_TEST_RAID1_TYPE;
u64 logical1 = SZ_1M;
u64 len1 = SZ_1M;
u64 logical2 = logical1 + len1;
u64 len2 = SZ_1M;
u64 logical3 = logical2 + len2;
u64 len3 = SZ_1M;
u64 hole_start = logical1 + SZ_256K;
u64 hole_len = SZ_2M;
int ret;
bioc = alloc_btrfs_io_context(fs_info, logical1, RST_TEST_NUM_DEVICES);
if (!bioc) {
test_std_err(TEST_ALLOC_IO_CONTEXT);
ret = -ENOMEM;
goto out;
}
io_stripe.dev = btrfs_device_by_devid(fs_info->fs_devices, 0);
/* Prepare for the test, 1st create 3 x 1M extents. */
bioc->map_type = map_type;
bioc->size = len1;
for (int i = 0; i < RST_TEST_NUM_DEVICES; i++) {
struct btrfs_io_stripe *stripe = &bioc->stripes[i];
stripe->dev = btrfs_device_by_devid(fs_info->fs_devices, i);
if (!stripe->dev) {
test_err("cannot find device with devid %d", i);
ret = -EINVAL;
goto out;
}
stripe->physical = logical1 + i * SZ_1G;
}
ret = btrfs_insert_one_raid_extent(trans, bioc);
if (ret) {
test_err("inserting RAID extent failed: %d", ret);
goto out;
}
bioc->logical = logical2;
bioc->size = len2;
for (int i = 0; i < RST_TEST_NUM_DEVICES; i++) {
struct btrfs_io_stripe *stripe = &bioc->stripes[i];
stripe->dev = btrfs_device_by_devid(fs_info->fs_devices, i);
if (!stripe->dev) {
test_err("cannot find device with devid %d", i);
ret = -EINVAL;
goto out;
}
stripe->physical = logical2 + i * SZ_1G;
}
ret = btrfs_insert_one_raid_extent(trans, bioc);
if (ret) {
test_err("inserting RAID extent failed: %d", ret);
goto out;
}
bioc->logical = logical3;
bioc->size = len3;
for (int i = 0; i < RST_TEST_NUM_DEVICES; i++) {
struct btrfs_io_stripe *stripe = &bioc->stripes[i];
stripe->dev = btrfs_device_by_devid(fs_info->fs_devices, i);
if (!stripe->dev) {
test_err("cannot find device with devid %d", i);
ret = -EINVAL;
goto out;
}
stripe->physical = logical3 + i * SZ_1G;
}
ret = btrfs_insert_one_raid_extent(trans, bioc);
if (ret) {
test_err("inserting RAID extent failed: %d", ret);
goto out;
}
/*
* Delete a range starting at logical1 + 256K and 2M in length. Extent
* 1 is truncated to 256k length, extent 2 is completely dropped and
* extent 3 is moved 256K to the right.
*/
ret = btrfs_delete_raid_extent(trans, hole_start, hole_len);
if (ret) {
test_err("deleting RAID extent [%llu, %llu] failed",
hole_start, hole_start + hole_len);
goto out;
}
/* Get the first extent and check its size. */
ret = btrfs_get_raid_extent_offset(fs_info, logical1, &len1, map_type,
0, &io_stripe);
if (ret) {
test_err("lookup of RAID extent [%llu, %llu] failed",
logical1, logical1 + len1);
goto out;
}
if (io_stripe.physical != logical1) {
test_err("invalid physical address, expected %llu, got %llu",
logical1, io_stripe.physical);
ret = -EINVAL;
goto out;
}
if (len1 != SZ_256K) {
test_err("invalid stripe length, expected %llu, got %llu",
(u64)SZ_256K, len1);
ret = -EINVAL;
goto out;
}
/* Get the second extent and check it's absent. */
ret = btrfs_get_raid_extent_offset(fs_info, logical2, &len2, map_type,
0, &io_stripe);
if (ret != -ENODATA) {
test_err("lookup of RAID extent [%llu, %llu] succeeded should fail",
logical2, logical2 + len2);
ret = -EINVAL;
goto out;
}
/* Get the third extent and check its size. */
logical3 += SZ_256K;
ret = btrfs_get_raid_extent_offset(fs_info, logical3, &len3, map_type,
0, &io_stripe);
if (ret) {
test_err("lookup of RAID extent [%llu, %llu] failed",
logical3, logical3 + len3);
goto out;
}
if (io_stripe.physical != logical3) {
test_err("invalid physical address, expected %llu, got %llu",
logical3 + SZ_256K, io_stripe.physical);
ret = -EINVAL;
goto out;
}
if (len3 != SZ_1M - SZ_256K) {
test_err("invalid stripe length, expected %llu, got %llu",
(u64)SZ_1M - SZ_256K, len3);
ret = -EINVAL;
goto out;
}
ret = btrfs_delete_raid_extent(trans, logical1, len1);
if (ret) {
test_err("deleting RAID extent [%llu, %llu] failed",
logical1, logical1 + len1);
goto out;
}
ret = btrfs_delete_raid_extent(trans, logical3, len3);
if (ret) {
test_err("deleting RAID extent [%llu, %llu] failed",
logical1, logical1 + len1);
goto out;
}
out:
btrfs_put_bioc(bioc);
return ret;
}
/* Test punching a hole into a single RAID stripe-extent. */
static int test_punch_hole(struct btrfs_trans_handle *trans)
{
@ -752,6 +934,7 @@ static const test_func_t tests[] = {
test_front_delete,
test_front_delete_prev_item,
test_punch_hole,
test_punch_hole_3extents,
};
static int run_test(test_func_t test, u32 sectorsize, u32 nodesize)