error = zfs_clone_range(VTOZ(invp), ap->a_inoffp, VTOZ(outvp),
ap->a_outoffp, &len, ap->a_outcred);
- if (error == EXDEV || error == EINVAL || error == EOPNOTSUPP)
+ if (error == EXDEV || error == EAGAIN || error == EINVAL ||
+ error == EOPNOTSUPP)
goto bad_locked_fallback;
*ap->a_lenp = (size_t)len;
out_locked:
* Since Linux 5.3 the filesystem driver is responsible for executing
* an appropriate fallback, and a generic fallback function is provided.
*/
- if (ret == -EOPNOTSUPP || ret == -EINVAL || ret == -EXDEV)
+ if (ret == -EOPNOTSUPP || ret == -EINVAL || ret == -EXDEV ||
+ ret == -EAGAIN)
ret = generic_copy_file_range(src_file, src_off, dst_file,
dst_off, len, flags);
#else
* Before Linux 5.3 the filesystem has to return -EOPNOTSUPP to signal
* to the kernel that it should fallback to a content copy.
*/
- if (ret == -EINVAL || ret == -EXDEV)
+ if (ret == -EINVAL || ret == -EXDEV || ret == -EAGAIN)
ret = -EOPNOTSUPP;
#endif /* HAVE_VFS_GENERIC_COPY_FILE_RANGE */
&nbps);
if (error != 0) {
/*
- * If we are tyring to clone a block that was created
- * in the current transaction group. Return an error,
- * so the caller can fallback to just copying the data.
+ * If we are trying to clone a block that was created
+ * in the current transaction group, error will be
+ * EAGAIN here, which we can just return to the caller
+ * so it can fallback if it likes.
*/
break;
}
'block_cloning_ficlonerange_partial',
'block_cloning_disabled_copyfilerange', 'block_cloning_disabled_ficlone',
'block_cloning_disabled_ficlonerange',
- 'block_cloning_copyfilerange_cross_dataset']
+ 'block_cloning_copyfilerange_cross_dataset',
+ 'block_cloning_copyfilerange_fallback_same_txg']
tags = ['functional', 'block_cloning']
[tests/functional/chattr:Linux]
['SKIP', cfr_reason],
'block_cloning/block_cloning_copyfilerange_cross_dataset':
['SKIP', cfr_cross_reason],
+ 'block_cloning/block_cloning_copyfilerange_fallback_same_txg':
+ ['SKIP', cfr_cross_reason],
})
functional/block_cloning/cleanup.ksh \
functional/block_cloning/setup.ksh \
functional/block_cloning/block_cloning_copyfilerange_cross_dataset.ksh \
+ functional/block_cloning/block_cloning_copyfilerange_fallback.ksh \
+ functional/block_cloning/block_cloning_copyfilerange_fallback_same_txg.ksh \
functional/block_cloning/block_cloning_copyfilerange.ksh \
functional/block_cloning/block_cloning_copyfilerange_partial.ksh \
- functional/block_cloning/block_cloning_copyfilerange_fallback.ksh \
functional/block_cloning/block_cloning_disabled_copyfilerange.ksh \
functional/block_cloning/block_cloning_disabled_ficlone.ksh \
functional/block_cloning/block_cloning_disabled_ficlonerange.ksh \
--- /dev/null
+#!/bin/ksh -p
+#
+# CDDL HEADER START
+#
+# The contents of this file are subject to the terms of the
+# Common Development and Distribution License (the "License").
+# You may not use this file except in compliance with the License.
+#
+# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+# or https://opensource.org/licenses/CDDL-1.0.
+# See the License for the specific language governing permissions
+# and limitations under the License.
+#
+# When distributing Covered Code, include this CDDL HEADER in each
+# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+# If applicable, add the following below this CDDL HEADER, with the
+# fields enclosed by brackets "[]" replaced with your own identifying
+# information: Portions Copyright [yyyy] [name of copyright owner]
+#
+# CDDL HEADER END
+#
+
+#
+# Copyright (c) 2023, Klara Inc.
+# Copyright (c) 2023, Rob Norris <robn@despairlabs.com>
+#
+
+. $STF_SUITE/include/libtest.shlib
+. $STF_SUITE/tests/functional/block_cloning/block_cloning.kshlib
+
+verify_runnable "global"
+
+if [[ $(linux_version) -lt $(linux_version "4.5") ]]; then
+ log_unsupported "copy_file_range not available before Linux 4.5"
+fi
+
+claim="copy_file_range will fall back to copy when cloning on same txg"
+
+log_assert $claim
+
+typeset timeout=$(get_tunable TXG_TIMEOUT)
+
+function cleanup
+{
+ datasetexists $TESTPOOL && destroy_pool $TESTPOOL
+ set_tunable64 TXG_TIMEOUT $timeout
+}
+
+log_onexit cleanup
+
+log_must zpool create -o feature@block_cloning=enabled $TESTPOOL $DISKS
+
+log_must set_tunable64 TXG_TIMEOUT 5000
+
+log_must dd if=/dev/urandom of=/$TESTPOOL/file bs=128K count=4
+log_must clonefile -f /$TESTPOOL/file /$TESTPOOL/clone 0 0 524288
+
+log_must sync_pool $TESTPOOL
+
+log_must have_same_content /$TESTPOOL/file /$TESTPOOL/clone
+
+typeset blocks=$(unique_blocks $TESTPOOL file $TESTPOOL clone)
+log_must [ "$blocks" = "" ]
+
+log_pass $claim
+