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tests: in IDE and AHCI tests perform DMA write before flushing 

Due to changes in flush behaviour clean disks stopped generating
flush_to_disk events and IDE and AHCI tests that test flush commands
started to fail.

This change adds additional DMA writes to affected tests before sending
flush commands so that bdrv_flush actually generates flush_to_disk event.

Signed-off-by: Evgeny Yakovlev <eyakovlev@virtuozzo.com>
Signed-off-by: Denis V. Lunev <den@openvz.org>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 1468870792-7411-4-git-send-email-den@openvz.org
CC: Kevin Wolf <kwolf@redhat.com>
CC: Max Reitz <mreitz@redhat.com>
CC: Stefan Hajnoczi <stefanha@redhat.com>
CC: Fam Zheng <famz@redhat.com>
CC: John Snow <jsnow@redhat.com>
Signed-off-by: John Snow <jsnow@redhat.com>
This commit is contained in:
Evgeny Yakovlev 2016-07-18 22:39:51 +03:00 committed by John Snow
parent 35f78ab469
commit 2dd7e10d7c
2 changed files with 75 additions and 2 deletions
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34
tests/ahci-test.c
View File

@ -1063,11 +1063,34 @@ static void test_dma_fragmented(void)
g_free(tx);
}
/*
* Write sector 1 with random data to make AHCI storage dirty
* Needed for flush tests so that flushes actually go though the block layer
*/
static void make_dirty(AHCIQState* ahci, uint8_t port)
{
uint64_t ptr;
unsigned bufsize = 512;
ptr = ahci_alloc(ahci, bufsize);
g_assert(ptr);
ahci_guest_io(ahci, port, CMD_WRITE_DMA, ptr, bufsize, 1);
ahci_free(ahci, ptr);
}
static void test_flush(void)
{
AHCIQState *ahci;
uint8_t port;
ahci = ahci_boot_and_enable(NULL);
port = ahci_port_select(ahci);
ahci_port_clear(ahci, port);
make_dirty(ahci, port);
ahci_test_flush(ahci);
ahci_shutdown(ahci);
}
@ -1087,10 +1110,13 @@ static void test_flush_retry(void)
debug_path,
tmp_path, imgfmt);
/* Issue Flush Command and wait for error */
port = ahci_port_select(ahci);
ahci_port_clear(ahci, port);
/* Issue write so that flush actually goes to disk */
make_dirty(ahci, port);
/* Issue Flush Command and wait for error */
cmd = ahci_guest_io_halt(ahci, port, CMD_FLUSH_CACHE, 0, 0, 0);
ahci_guest_io_resume(ahci, cmd);
@ -1343,9 +1369,13 @@ static void test_flush_migrate(void)
set_context(src->parent);
/* Issue Flush Command */
px = ahci_port_select(src);
ahci_port_clear(src, px);
/* Dirty device so that flush reaches disk */
make_dirty(src, px);
/* Issue Flush Command */
cmd = ahci_command_create(CMD_FLUSH_CACHE);
ahci_command_commit(src, cmd, px);
ahci_command_issue_async(src, cmd);

43
tests/ide-test.c
View File

@ -499,6 +499,39 @@ static void test_identify(void)
ide_test_quit();
}
/*
* Write sector 1 with random data to make IDE storage dirty
* Needed for flush tests so that flushes actually go though the block layer
*/
static void make_dirty(uint8_t device)
{
uint8_t status;
size_t len = 512;
uintptr_t guest_buf;
void* buf;
guest_buf = guest_alloc(guest_malloc, len);
buf = g_malloc(len);
g_assert(guest_buf);
g_assert(buf);
memwrite(guest_buf, buf, len);
PrdtEntry prdt[] = {
{
.addr = cpu_to_le32(guest_buf),
.size = cpu_to_le32(len | PRDT_EOT),
},
};
status = send_dma_request(CMD_WRITE_DMA, 1, 1, prdt,
ARRAY_SIZE(prdt), NULL);
g_assert_cmphex(status, ==, BM_STS_INTR);
assert_bit_clear(inb(IDE_BASE + reg_status), DF | ERR);
g_free(buf);
}
static void test_flush(void)
{
uint8_t data;
@ -507,6 +540,11 @@ static void test_flush(void)
"-drive file=blkdebug::%s,if=ide,cache=writeback,format=raw",
tmp_path);
qtest_irq_intercept_in(global_qtest, "ioapic");
/* Dirty media so that CMD_FLUSH_CACHE will actually go to disk */
make_dirty(0);
/* Delay the completion of the flush request until we explicitly do it */
g_free(hmp("qemu-io ide0-hd0 \"break flush_to_os A\""));
@ -549,6 +587,11 @@ static void test_retry_flush(const char *machine)
"rerror=stop,werror=stop",
debug_path, tmp_path);
qtest_irq_intercept_in(global_qtest, "ioapic");
/* Dirty media so that CMD_FLUSH_CACHE will actually go to disk */
make_dirty(0);
/* FLUSH CACHE command on device 0*/
outb(IDE_BASE + reg_device, 0);
outb(IDE_BASE + reg_command, CMD_FLUSH_CACHE);