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maxphys is now a tunable, ever since r368124. The default value is also larger than it used to be. That broke several fusefs tests that made assumptions about maxphys. * WriteCluster.clustering used the MAXPHYS compile-time constant. * WriteBackAsync.direct_io_partially_overlaps_cached_block implicitly depended on the default value of maxphys. Fix it by making the dependency explicit. * Write.write_large implicitly assumed that maxphys would be no more than twice maxbcachebuf. Fix it by explicitly setting m_max_write. * WriteCluster.clustering and several others failed because the MockFS module did not work for max_write > 128KB (which most tests would set when maxphys > 256KB). Limit max_write accordingly. This is the same as fusefs-libs's behavior. * Bmap's tests were originally written for MAXPHYS=128KB. With larger values, the simulated file size was too small. PR: 252096 Reviewed by: emaste Differential Revision: https://reviews.freebsd.org/D27769
167 lines
4.6 KiB
C++
167 lines
4.6 KiB
C++
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2019 The FreeBSD Foundation
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*
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* This software was developed by BFF Storage Systems, LLC under sponsorship
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* from the FreeBSD Foundation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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extern "C" {
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#include <sys/param.h>
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#include <sys/ioctl.h>
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#include <sys/filio.h>
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#include <fcntl.h>
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}
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#include "mockfs.hh"
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#include "utils.hh"
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using namespace testing;
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const static char FULLPATH[] = "mountpoint/foo";
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const static char RELPATH[] = "foo";
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class Bmap: public FuseTest {
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public:
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virtual void SetUp() {
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m_maxreadahead = UINT32_MAX;
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FuseTest::SetUp();
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}
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void expect_bmap(uint64_t ino, uint64_t lbn, uint32_t blocksize, uint64_t pbn)
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{
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EXPECT_CALL(*m_mock, process(
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ResultOf([=](auto in) {
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return (in.header.opcode == FUSE_BMAP &&
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in.header.nodeid == ino &&
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in.body.bmap.block == lbn &&
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in.body.bmap.blocksize == blocksize);
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}, Eq(true)),
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_)
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).WillOnce(Invoke(ReturnImmediate([=](auto i __unused, auto& out) {
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SET_OUT_HEADER_LEN(out, bmap);
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out.body.bmap.block = pbn;
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})));
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}
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void expect_lookup(const char *relpath, uint64_t ino, off_t size)
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{
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FuseTest::expect_lookup(relpath, ino, S_IFREG | 0644, size, 1,
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UINT64_MAX);
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}
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};
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/*
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* Test FUSE_BMAP
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* XXX The FUSE protocol does not include the runp and runb variables, so those
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* must be guessed in-kernel.
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*/
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TEST_F(Bmap, bmap)
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{
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struct fiobmap2_arg arg;
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/*
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* Pick fsize and lbn large enough that max length runs won't reach
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* either beginning or end of file
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*/
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const off_t filesize = 1 << 30;
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int64_t lbn = 100;
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int64_t pbn = 12345;
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const ino_t ino = 42;
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int fd;
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expect_lookup(RELPATH, 42, filesize);
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expect_open(ino, 0, 1);
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expect_bmap(ino, lbn, m_maxbcachebuf, pbn);
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fd = open(FULLPATH, O_RDWR);
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ASSERT_LE(0, fd) << strerror(errno);
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arg.bn = lbn;
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arg.runp = -1;
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arg.runb = -1;
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ASSERT_EQ(0, ioctl(fd, FIOBMAP2, &arg)) << strerror(errno);
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EXPECT_EQ(arg.bn, pbn);
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EXPECT_EQ(arg.runp, m_maxphys / m_maxbcachebuf - 1);
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EXPECT_EQ(arg.runb, m_maxphys / m_maxbcachebuf - 1);
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}
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/*
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* If the daemon does not implement VOP_BMAP, fusefs should return sensible
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* defaults.
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*/
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TEST_F(Bmap, default_)
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{
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struct fiobmap2_arg arg;
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const off_t filesize = 1 << 30;
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const ino_t ino = 42;
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int64_t lbn;
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int fd;
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expect_lookup(RELPATH, 42, filesize);
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expect_open(ino, 0, 1);
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EXPECT_CALL(*m_mock, process(
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ResultOf([=](auto in) {
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return (in.header.opcode == FUSE_BMAP);
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}, Eq(true)),
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_)
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).WillOnce(Invoke(ReturnErrno(ENOSYS)));
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fd = open(FULLPATH, O_RDWR);
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ASSERT_LE(0, fd) << strerror(errno);
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/* First block */
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lbn = 0;
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arg.bn = lbn;
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arg.runp = -1;
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arg.runb = -1;
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ASSERT_EQ(0, ioctl(fd, FIOBMAP2, &arg)) << strerror(errno);
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EXPECT_EQ(arg.bn, 0);
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EXPECT_EQ(arg.runp, m_maxphys / m_maxbcachebuf - 1);
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EXPECT_EQ(arg.runb, 0);
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/* In the middle */
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lbn = filesize / m_maxbcachebuf / 2;
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arg.bn = lbn;
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arg.runp = -1;
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arg.runb = -1;
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ASSERT_EQ(0, ioctl(fd, FIOBMAP2, &arg)) << strerror(errno);
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EXPECT_EQ(arg.bn, lbn * m_maxbcachebuf / DEV_BSIZE);
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EXPECT_EQ(arg.runp, m_maxphys / m_maxbcachebuf - 1);
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EXPECT_EQ(arg.runb, m_maxphys / m_maxbcachebuf - 1);
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/* Last block */
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lbn = filesize / m_maxbcachebuf - 1;
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arg.bn = lbn;
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arg.runp = -1;
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arg.runb = -1;
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ASSERT_EQ(0, ioctl(fd, FIOBMAP2, &arg)) << strerror(errno);
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EXPECT_EQ(arg.bn, lbn * m_maxbcachebuf / DEV_BSIZE);
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EXPECT_EQ(arg.runp, 0);
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EXPECT_EQ(arg.runb, m_maxphys / m_maxbcachebuf - 1);
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leak(fd);
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}
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