Commit 093ea232 removed the ability for aio_read and aio_write
to artificially inflate the invalid statistics counters for
block devices, since it no longer flags unaligned offset or
length. Add 'aio_read -i' and 'aio_write -i' to restore
the ability, and update test 136 to use it.
Reported-by: Kevin Wolf <kw...@redhat.com>
Signed-off-by: Eric Blake <ebl...@redhat.com>
---
qemu-io-cmds.c | 20 ++++++++++++++++----
tests/qemu-iotests/136 | 18 +++++++-----------
2 files changed, 23 insertions(+), 15 deletions(-)
diff --git a/qemu-io-cmds.c b/qemu-io-cmds.c
index 415be25..059b8ee 100644
--- a/qemu-io-cmds.c
+++ b/qemu-io-cmds.c
@@ -1476,6 +1476,7 @@ static void aio_read_help(void)
" used to ensure all outstanding aio requests have been completed.\n"
" -C, -- report statistics in a machine parsable format\n"
" -P, -- use a pattern to verify read data\n"
+" -i, -- treat request as invalid, for exercising stats\n"
" -v, -- dump buffer to standard output\n"
" -q, -- quiet mode, do not show I/O statistics\n"
"\n");
@@ -1488,7 +1489,7 @@ static const cmdinfo_t aio_read_cmd = {
.cfunc = aio_read_f,
.argmin = 2,
.argmax = -1,
- .args = "[-Cqv] [-P pattern] off len [len..]",
+ .args = "[-Ciqv] [-P pattern] off len [len..]",
.oneline = "asynchronously reads a number of bytes",
.help = aio_read_help,
};
@@ -1499,7 +1500,7 @@ static int aio_read_f(BlockBackend *blk, int argc, char
**argv)
struct aio_ctx *ctx = g_new0(struct aio_ctx, 1);
ctx->blk = blk;
- while ((c = getopt(argc, argv, "CP:qv")) != -1) {
+ while ((c = getopt(argc, argv, "CP:iqv")) != -1) {
switch (c) {
case 'C':
ctx->Cflag = true;
@@ -1512,6 +1513,11 @@ static int aio_read_f(BlockBackend *blk, int argc, char
**argv)
return 0;
}
break;
+ case 'i':
+ printf("injecting invalid read request\n");
+ block_acct_invalid(blk_get_stats(blk), BLOCK_ACCT_READ);
+ g_free(ctx);
+ return 0;
case 'q':
ctx->qflag = true;
break;
@@ -1569,6 +1575,7 @@ static void aio_write_help(void)
" -P, -- use different pattern to fill file\n"
" -C, -- report statistics in a machine parsable format\n"
" -f, -- use Force Unit Access semantics\n"
+" -i, -- treat request as invalid, for exercising stats\n"
" -q, -- quiet mode, do not show I/O statistics\n"
" -u, -- with -z, allow unmapping\n"
" -z, -- write zeroes using blk_aio_write_zeroes\n"
@@ -1582,7 +1589,7 @@ static const cmdinfo_t aio_write_cmd = {
.cfunc = aio_write_f,
.argmin = 2,
.argmax = -1,
- .args = "[-Cfquz] [-P pattern] off len [len..]",
+ .args = "[-Cfiquz] [-P pattern] off len [len..]",
.oneline = "asynchronously writes a number of bytes",
.help = aio_write_help,
};
@@ -1595,7 +1602,7 @@ static int aio_write_f(BlockBackend *blk, int argc, char
**argv)
int flags = 0;
ctx->blk = blk;
- while ((c = getopt(argc, argv, "CfqP:uz")) != -1) {
+ while ((c = getopt(argc, argv, "CfiqP:uz")) != -1) {
switch (c) {
case 'C':
ctx->Cflag = true;
@@ -1616,6 +1623,11 @@ static int aio_write_f(BlockBackend *blk, int argc, char
**argv)
return 0;
}
break;
+ case 'i':
+ printf("injecting invalid write request\n");
+ block_acct_invalid(blk_get_stats(blk), BLOCK_ACCT_WRITE);
+ g_free(ctx);
+ return 0;
case 'z':
ctx->zflag = true;
break;
diff --git a/tests/qemu-iotests/136 b/tests/qemu-iotests/136
index e8c6937..5e92c4b 100644
--- a/tests/qemu-iotests/136
+++ b/tests/qemu-iotests/136
@@ -226,18 +226,14 @@ sector = "%d"
highest_offset = wr_ops * wr_size
- # Two types of invalid operations: unaligned length and unaligned
offset
- for i in range(invalid_rd_ops / 2):
- ops.append("aio_read 0 511")
+ # Block layer abstracts away unaligned length and offset, so we
+ # can't trigger an invalid op with any addresses; use qemu-io's
+ # invalid injection feature instead
+ for i in range(invalid_rd_ops):
+ ops.append("aio_read -i 0 512")
- for i in range(invalid_rd_ops / 2, invalid_rd_ops):
- ops.append("aio_read 13 512")
-
- for i in range(invalid_wr_ops / 2):
- ops.append("aio_write 0 511")
-
- for i in range(invalid_wr_ops / 2, invalid_wr_ops):
- ops.append("aio_write 13 512")
+ for i in range(invalid_wr_ops):
+ ops.append("aio_write -i 0 512")
for i in range(failed_rd_ops):
ops.append("aio_read %d 512" % bad_offset)
--
2.5.5
