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Message-Id: <20250107-rst-delete-fixes-v2-14-0c7b14c0aac2@kernel.org>
Date: Tue, 07 Jan 2025 13:47:44 +0100
From: Johannes Thumshirn <jth@...nel.org>
To: Chris Mason <clm@...com>, Josef Bacik <josef@...icpanda.com>,
David Sterba <dsterba@...e.com>
Cc: linux-btrfs@...r.kernel.org, linux-kernel@...r.kernel.org,
Filipe Manana <fdmanana@...e.com>,
Johannes Thumshirn <johannes.thumshirn@....com>
Subject: [PATCH v2 14/14] btrfs: selftests: add a selftest for deleting two
out of three extents
From: Johannes Thumshirn <johannes.thumshirn@....com>
Add a selftest creating three extents and then deleting two out of the
three extents.
Signed-off-by: Johannes Thumshirn <johannes.thumshirn@....com>
Reviewed-by: Filipe Manana <fdmanana@...e.com>
---
fs/btrfs/tests/raid-stripe-tree-tests.c | 144 ++++++++++++++++++++++++++++++++
1 file changed, 144 insertions(+)
diff --git a/fs/btrfs/tests/raid-stripe-tree-tests.c b/fs/btrfs/tests/raid-stripe-tree-tests.c
index e12b6abbfd2be66170d33ab13b1e0971444c0f9a..6c7e561e55641472a63bb15c8c2213273111ad08 100644
--- a/fs/btrfs/tests/raid-stripe-tree-tests.c
+++ b/fs/btrfs/tests/raid-stripe-tree-tests.c
@@ -213,6 +213,149 @@ static int test_punch_hole_3extents(struct btrfs_trans_handle *trans)
return ret;
}
+static int test_delete_two_extents(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;
+ 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 and 2M in length. Extents 1
+ * and 2 are dropped and extent 3 is kept as is.
+ */
+ ret = btrfs_delete_raid_extent(trans, logical1, len1 + len2);
+ if (ret) {
+ test_err("deleting RAID extent [%llu, %llu] failed",
+ logical1, logical1 + len1 + len2);
+ goto out;
+ }
+
+ ret = btrfs_get_raid_extent_offset(fs_info, logical1, &len1, map_type,
+ 0, &io_stripe);
+ if (ret != -ENODATA) {
+ test_err("lookup of RAID extent [%llu, %llu] suceeded, should fail\n",
+ logical1, len1);
+ goto out;
+ }
+
+ 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] suceeded, should fail\n",
+ logical2, len2);
+ goto out;
+ }
+
+ 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\n",
+ logical3, len3);
+ goto out;
+ }
+
+ if (io_stripe.physical != logical3) {
+ test_err("invalid physical address, expected %llu, got %llu",
+ logical3, io_stripe.physical);
+ ret = -EINVAL;
+ goto out;
+ }
+
+ if (len3 != SZ_1M) {
+ test_err("invalid stripe length, expected %llu, got %llu",
+ (u64)SZ_1M, len3);
+ ret = -EINVAL;
+ goto out;
+ }
+
+ ret = btrfs_delete_raid_extent(trans, logical3, len3);
+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)
{
@@ -935,6 +1078,7 @@ static const test_func_t tests[] = {
test_front_delete_prev_item,
test_punch_hole,
test_punch_hole_3extents,
+ test_delete_two_extents,
};
static int run_test(test_func_t test, u32 sectorsize, u32 nodesize)
--
2.43.0
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