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#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (C) 2018 CTERA Networks. All Rights Reserved.
#
# FS QA Test No. 052
#
# Test encode/decode overlay file handles with renames
#
# - Check decode/read of file handles after rename of parent
# - Check decode/read of file handles after rename of grandparent
# - Check decode/read of file handles after move to new parent
# - Check encode/decode/read of file handles in non-upper overlay
#
# This test requires and enables overlayfs NFS export support and merge
# dir rename support (redirect_dir).
# NFS export support depends on and requires overlayfs index feature.
#
. ./common/preamble
_begin_fstest auto quick copyup redirect exportfs
# Import common functions.
. ./common/filter
# real QA test starts here
_supported_fs overlay
_require_scratch
_require_test_program "open_by_handle"
# We need to require all features together, because nfs_export cannot
# be enabled when index is disabled
_require_scratch_overlay_features index nfs_export redirect_dir
# All overlay dirs are on scratch partition
lower=$OVL_BASE_SCRATCH_MNT/$OVL_LOWER
middle=$OVL_BASE_SCRATCH_MNT/$OVL_LOWER.2
upper=$OVL_BASE_SCRATCH_MNT/$OVL_UPPER
work=$OVL_BASE_SCRATCH_MNT/$OVL_WORK
NUMFILES=1
# Create test dir and empty test files
create_test_files()
{
local dir=$1
local opt=$2
mkdir -p $dir
$here/src/open_by_handle -cp $opt $dir $NUMFILES
}
# Test encode/decode file handles on overlay mount
test_file_handles()
{
local dir=$1
shift
echo test_file_handles $dir $* | _filter_scratch | \
sed -e "s,$tmp\.,,g"
$here/src/open_by_handle $* $dir $NUMFILES
}
# Re-create lower/middle/upper/work dirs
create_dirs()
{
_scratch_mkfs
mkdir -p $middle
}
# Mount an overlay on $SCRATCH_MNT with all layers on scratch partition
mount_dirs()
{
_scratch_mount -o "index=on,nfs_export=on,redirect_dir=on"
}
# Unmount the overlay without unmounting base fs
unmount_dirs()
{
$UMOUNT_PROG $SCRATCH_MNT
}
# Check non-stale file handles of lower/upper moved files
create_dirs
create_test_files $upper/uppertestdir -w
create_test_files $lower/lowertestdir -w
mkdir -p $lower/lowertestdir.lo $lower/lowertestdir.up $upper/uppertestdir.lo $upper/uppertestdir.up
mount_dirs
# Check encode/decode/read of lower/upper file handles after move to new upper testdir
test_file_handles $SCRATCH_MNT/uppertestdir -o $tmp.upper_file_handles
test_file_handles $SCRATCH_MNT/lowertestdir -o $tmp.lower_file_handles
mv $SCRATCH_MNT/uppertestdir/* $SCRATCH_MNT/uppertestdir.up/
mv $SCRATCH_MNT/lowertestdir/* $SCRATCH_MNT/uppertestdir.lo/
# Check open and read from stored file handles
test_file_handles $SCRATCH_MNT -r -i $tmp.upper_file_handles
test_file_handles $SCRATCH_MNT -r -i $tmp.lower_file_handles
# Check encode/decode/read of lower/upper file handles after move to new merge testdir
test_file_handles $SCRATCH_MNT/uppertestdir.up -o $tmp.upper_file_handles
test_file_handles $SCRATCH_MNT/uppertestdir.lo -o $tmp.lower_file_handles
mv $SCRATCH_MNT/uppertestdir.up/* $SCRATCH_MNT/lowertestdir.up/
mv $SCRATCH_MNT/uppertestdir.lo/* $SCRATCH_MNT/lowertestdir.lo/
# Check open and read from stored file handles
test_file_handles $SCRATCH_MNT -r -i $tmp.upper_file_handles
test_file_handles $SCRATCH_MNT -r -i $tmp.lower_file_handles
unmount_dirs
# Check non-stale file handles of lower/upper renamed dirs
create_dirs
create_test_files $upper/uppertestdir -w
create_test_files $lower/lowertestdir -w
create_test_files $upper/uppertestdir/subdir -w
create_test_files $lower/lowertestdir/subdir -w
mount_dirs
# Check encode/decode/read of lower/upper file handles after rename of testdir
test_file_handles $SCRATCH_MNT/uppertestdir -p -o $tmp.upper_file_handles
test_file_handles $SCRATCH_MNT/lowertestdir -p -o $tmp.lower_file_handles
# Check encode/decode/read of lower/upper file handles after rename of testdir's parent
test_file_handles $SCRATCH_MNT/uppertestdir/subdir -p -o $tmp.upper_subdir_file_handles
test_file_handles $SCRATCH_MNT/lowertestdir/subdir -p -o $tmp.lower_subdir_file_handles
# Rename pure upper dir
mv $SCRATCH_MNT/uppertestdir $SCRATCH_MNT/uppertestdir.new/
# Copy up lower dir, index and rename
mv $SCRATCH_MNT/lowertestdir $SCRATCH_MNT/lowertestdir.new/
# Check open, read and readdir from stored file handles
# (testdir argument is the mount point and NOT the dir
# we are trying to open by stored file handle)
test_file_handles $SCRATCH_MNT -rp -i $tmp.upper_file_handles
test_file_handles $SCRATCH_MNT -rp -i $tmp.lower_file_handles
test_file_handles $SCRATCH_MNT -rp -i $tmp.upper_subdir_file_handles
test_file_handles $SCRATCH_MNT -rp -i $tmp.lower_subdir_file_handles
# Retry decoding lower subdir file handle when indexed testdir is in dcache
# (providing renamed testdir argument pins the indexed testdir to dcache)
test_file_handles $SCRATCH_MNT/lowertestdir.new -rp -i $tmp.lower_subdir_file_handles
unmount_dirs
# Check encode/decode/read of lower file handles on lower layers only r/o overlay.
# For non-upper overlay mount, nfs_export requires disabling redirect_dir.
_overlay_scratch_mount_opts \
-o ro,redirect_dir=nofollow,nfs_export=on,lowerdir=$middle:$lower
test_file_handles $SCRATCH_MNT/lowertestdir -rp
test_file_handles $SCRATCH_MNT/lowertestdir/subdir -rp
unmount_dirs
# Check encode/decode/read of lower file handles on lower layers only r/o overlay
# with non-indexed redirects from top lower layer to bottom lower layer.
# Overlay lookup cannot follow the redirect from $upper/lowertestdir.new to
# $lower/lowertestdir. Instead, we mount an overlay subtree rooted at these
# directories.
_overlay_scratch_mount_opts \
-o ro,redirect_dir=nofollow,nfs_export=on,lowerdir=$upper/lowertestdir.new:$lower/lowertestdir
test_file_handles $SCRATCH_MNT -r
test_file_handles $SCRATCH_MNT/subdir -rp
unmount_dirs
status=0
exit
|
