From: Daniel Vacek <neelx@suse.com>
To: fstests@vger.kernel.org
Cc: linux-btrfs@vger.kernel.org, linux-ext4@vger.kernel.org,
linux-xfs@vger.kernel.org,
linux-f2fs-devel@lists.sourceforge.net, zlang@redhat.com,
hch@infradead.org, djwong@kernel.org,
David Sterba <dsterba@suse.com>, Daniel Vacek <neelx@suse.com>,
linux-fscrypt@vger.kernel.org,
Sweet Tea Dorminy <sweettea-kernel@dorminy.me>
Subject: [PATCH 07/12] btrfs: test snapshotting encrypted subvol
Date: Fri, 24 Jul 2026 15:33:23 +0200 [thread overview]
Message-ID: <20260724133328.1837318-8-neelx@suse.com> (raw)
In-Reply-To: <20260724133328.1837318-1-neelx@suse.com>
From: Sweet Tea Dorminy <sweettea-kernel@dorminy.me>
Make sure that snapshots of encrypted data are readable and writeable.
Test deliberately high-numbered to not conflict.
Signed-off-by: Sweet Tea Dorminy <sweettea-kernel@dorminy.me>
Signed-off-by: Daniel Vacek <neelx@suse.com>
---
tests/btrfs/614 | 73 +++++++++++++++++++++++++++++
tests/btrfs/614.out | 111 ++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 184 insertions(+)
create mode 100755 tests/btrfs/614
create mode 100644 tests/btrfs/614.out
diff --git a/tests/btrfs/614 b/tests/btrfs/614
new file mode 100755
index 00000000..840c3b8d
--- /dev/null
+++ b/tests/btrfs/614
@@ -0,0 +1,73 @@
+#! /bin/bash
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (c) 2023 Meta Platforms, Inc. All Rights Reserved.
+#
+# FS QA Test 614
+#
+# Try taking a snapshot of an encrypted subvolume. Make sure the snapshot is
+# still readable. Rewrite part of the subvol with the same data; make sure it's
+# still readable.
+#
+. ./common/preamble
+_begin_fstest auto encrypt
+
+# Import common functions.
+. ./common/encrypt
+. ./common/filter
+
+_require_test
+_require_scratch
+_require_scratch_encryption -v 2
+_require_command "$KEYCTL_PROG" keyctl
+
+_scratch_mkfs_encrypted &>> $seqres.full
+_scratch_mount
+
+udir=$SCRATCH_MNT/reference
+dir=$SCRATCH_MNT/subvol
+dir2=$SCRATCH_MNT/subvol2
+$BTRFS_UTIL_PROG subvolume create $dir >> $seqres.full
+mkdir $udir
+
+_set_encpolicy $dir $TEST_KEY_IDENTIFIER
+_add_enckey $SCRATCH_MNT "$TEST_RAW_KEY"
+
+# get files with lots of extents by using backwards writes.
+for j in `seq 0 50`; do
+ for i in `seq 20 -1 1`; do
+ $XFS_IO_PROG -f -d -c "pwrite $(($i * 4096)) 4096" \
+ $dir/foo-$j >> $seqres.full | _filter_xfs_io
+ $XFS_IO_PROG -f -d -c "pwrite $(($i * 4096)) 4096" \
+ $udir/foo-$j >> $seqres.full | _filter_xfs_io
+ done
+done
+
+$BTRFS_UTIL_PROG subvolume snapshot $dir $dir2 | _filter_scratch
+
+_scratch_remount
+_add_enckey $SCRATCH_MNT "$TEST_RAW_KEY"
+sleep 30
+echo "Diffing $dir and $dir2"
+diff $dir $dir2
+
+echo "Rewriting $dir2 partly"
+# rewrite half of each file in the snapshot
+for j in `seq 0 50`; do
+ for i in `seq 10 -1 1`; do
+ $XFS_IO_PROG -f -d -c "pwrite $(($i * 4096)) 4096" \
+ $dir2/foo-$j >> $seqres.full | _filter_xfs_io
+ done
+done
+
+echo "Diffing $dir and $dir2"
+diff $dir $dir2
+
+echo "Dropping key and diffing"
+_rm_enckey $SCRATCH_MNT $TEST_KEY_IDENTIFIER
+diff $dir $dir2 |& _filter_scratch | _filter_nokey_filenames
+
+$BTRFS_UTIL_PROG subvolume delete $dir > /dev/null 2>&1
+
+# success, all done
+status=0
+exit
diff --git a/tests/btrfs/614.out b/tests/btrfs/614.out
new file mode 100644
index 00000000..bd95b67a
--- /dev/null
+++ b/tests/btrfs/614.out
@@ -0,0 +1,111 @@
+QA output created by 614
+Added encryption key with identifier 69b2f6edeee720cce0577937eb8a6751
+Create snapshot of 'SCRATCH_MNT/subvol' in 'SCRATCH_MNT/subvol2'
+Added encryption key with identifier 69b2f6edeee720cce0577937eb8a6751
+Diffing /mnt/scratch/subvol and /mnt/scratch/subvol2
+Rewriting /mnt/scratch/subvol2 partly
+Diffing /mnt/scratch/subvol and /mnt/scratch/subvol2
+Dropping key and diffing
+Removed encryption key with identifier 69b2f6edeee720cce0577937eb8a6751
+NOKEY_NAME: NOKEY_NAME/NOKEY_NAME/NOKEY_NAME: NOKEY_NAME NOKEY_NAME NOKEY_NAME NOKEY_NAME
+NOKEY_NAME: NOKEY_NAME/NOKEY_NAME/NOKEY_NAME: NOKEY_NAME NOKEY_NAME NOKEY_NAME NOKEY_NAME
+NOKEY_NAME: NOKEY_NAME/NOKEY_NAME/NOKEY_NAME: NOKEY_NAME NOKEY_NAME NOKEY_NAME NOKEY_NAME
+NOKEY_NAME: NOKEY_NAME/NOKEY_NAME/NOKEY_NAME: NOKEY_NAME NOKEY_NAME NOKEY_NAME NOKEY_NAME
+NOKEY_NAME: NOKEY_NAME/NOKEY_NAME/NOKEY_NAME: NOKEY_NAME NOKEY_NAME NOKEY_NAME NOKEY_NAME
+NOKEY_NAME: NOKEY_NAME/NOKEY_NAME/NOKEY_NAME: NOKEY_NAME NOKEY_NAME NOKEY_NAME NOKEY_NAME
+NOKEY_NAME: NOKEY_NAME/NOKEY_NAME/NOKEY_NAME: NOKEY_NAME NOKEY_NAME NOKEY_NAME NOKEY_NAME
+NOKEY_NAME: NOKEY_NAME/NOKEY_NAME/NOKEY_NAME: NOKEY_NAME NOKEY_NAME NOKEY_NAME NOKEY_NAME
+NOKEY_NAME: NOKEY_NAME/NOKEY_NAME/NOKEY_NAME: NOKEY_NAME NOKEY_NAME NOKEY_NAME NOKEY_NAME
+NOKEY_NAME: NOKEY_NAME/NOKEY_NAME/NOKEY_NAME: NOKEY_NAME NOKEY_NAME NOKEY_NAME NOKEY_NAME
+NOKEY_NAME: NOKEY_NAME/NOKEY_NAME/NOKEY_NAME: NOKEY_NAME NOKEY_NAME NOKEY_NAME NOKEY_NAME
+NOKEY_NAME: NOKEY_NAME/NOKEY_NAME/NOKEY_NAME: NOKEY_NAME NOKEY_NAME NOKEY_NAME NOKEY_NAME
+NOKEY_NAME: NOKEY_NAME/NOKEY_NAME/NOKEY_NAME: NOKEY_NAME NOKEY_NAME NOKEY_NAME NOKEY_NAME
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+NOKEY_NAME: NOKEY_NAME/NOKEY_NAME/NOKEY_NAME: NOKEY_NAME NOKEY_NAME NOKEY_NAME NOKEY_NAME
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+NOKEY_NAME: NOKEY_NAME/NOKEY_NAME/NOKEY_NAME: NOKEY_NAME NOKEY_NAME NOKEY_NAME NOKEY_NAME
+NOKEY_NAME: NOKEY_NAME/NOKEY_NAME/NOKEY_NAME: NOKEY_NAME NOKEY_NAME NOKEY_NAME NOKEY_NAME
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+NOKEY_NAME: NOKEY_NAME/NOKEY_NAME/NOKEY_NAME: NOKEY_NAME NOKEY_NAME NOKEY_NAME NOKEY_NAME
+NOKEY_NAME: NOKEY_NAME/NOKEY_NAME/NOKEY_NAME: NOKEY_NAME NOKEY_NAME NOKEY_NAME NOKEY_NAME
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+NOKEY_NAME: NOKEY_NAME/NOKEY_NAME/NOKEY_NAME: NOKEY_NAME NOKEY_NAME NOKEY_NAME NOKEY_NAME
+NOKEY_NAME: NOKEY_NAME/NOKEY_NAME/NOKEY_NAME: NOKEY_NAME NOKEY_NAME NOKEY_NAME NOKEY_NAME
+NOKEY_NAME: NOKEY_NAME/NOKEY_NAME/NOKEY_NAME: NOKEY_NAME NOKEY_NAME NOKEY_NAME NOKEY_NAME
+NOKEY_NAME: NOKEY_NAME/NOKEY_NAME/NOKEY_NAME: NOKEY_NAME NOKEY_NAME NOKEY_NAME NOKEY_NAME
+NOKEY_NAME: NOKEY_NAME/NOKEY_NAME/NOKEY_NAME: NOKEY_NAME NOKEY_NAME NOKEY_NAME NOKEY_NAME
--
2.53.0
next prev parent reply other threads:[~2026-07-24 13:34 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-24 13:33 [PATCH 00/12] fstests: introduce fscrypt support for btrfs Daniel Vacek
2026-07-24 13:33 ` [PATCH 01/12] common/encrypt: separate data and inode nonces Daniel Vacek
2026-07-24 13:33 ` [PATCH 02/12] common/encrypt: add btrfs to get_encryption_*nonce Daniel Vacek
2026-07-24 13:33 ` [PATCH 03/12] common/encrypt: add btrfs to get_ciphertext_filename Daniel Vacek
2026-07-24 13:33 ` [PATCH 04/12] common/encrypt: enable making a encrypted btrfs filesystem Daniel Vacek
2026-07-24 13:33 ` [PATCH 05/12] common/verity: explicitly don't allow btrfs encryption Daniel Vacek
2026-07-24 13:33 ` [PATCH 06/12] btrfs: add simple test of reflink of encrypted data Daniel Vacek
2026-07-24 13:33 ` Daniel Vacek [this message]
2026-07-24 13:33 ` [PATCH 08/12] fstests: properly test for v1 encryption policies in encrypt tests Daniel Vacek
2026-07-24 13:33 ` [PATCH 09/12] fstests: split generic/580 into two tests Daniel Vacek
2026-07-24 13:33 ` [PATCH 10/12] fstests: split generic/581 " Daniel Vacek
2026-07-24 13:33 ` [PATCH 11/12] fstests: split generic/613 " Daniel Vacek
2026-07-24 13:33 ` [PATCH 12/12] fscrypt-crypt-util: add support for per extent KDF Daniel Vacek
2026-07-28 3:19 ` [PATCH 00/12] fstests: introduce fscrypt support for btrfs Christoph Hellwig
2026-07-28 5:44 ` Daniel Vacek
2026-07-28 5:48 ` Eric Biggers
2026-07-28 6:04 ` Christoph Hellwig
2026-07-28 6:07 ` Eric Biggers
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