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Re: [Qemu-devel] [PATCH v2] iotests: 109: Filter out "len" of failed job


From: Paolo Bonzini
Subject: Re: [Qemu-devel] [PATCH v2] iotests: 109: Filter out "len" of failed jobs
Date: Wed, 19 Apr 2017 18:38:14 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.8.0


On 19/04/2017 11:17, Fam Zheng wrote:
> Mirror calculates job len from current I/O progress:
> 
>     s->common.len = s->common.offset +
>                     (cnt + s->sectors_in_flight) * BDRV_SECTOR_SIZE;
> 
> The final "len" of a failed mirror job in iotests 109 depends on the
> subtle timing of the completion of read and write issued in the first
> mirror iteration.  The second iteration may or may not have run when the
> I/O error happens, resulting in non-deterministic output of the
> BLOCK_JOB_COMPLETED event text.
> 
> Similar to what was done in a752e4786, filter out the field to make the
> test robust.

There are more occurrences:

--- /home/pbonzini/work/upstream/qemu/tests/qemu-iotests/109.out        
2017-04-19 16:29:31.821480839 +0200
+++ 109.out.bad 2017-04-19 18:26:54.537515323 +0200
@@ -135,7 +135,7 @@
 Specify the 'raw' format explicitly to remove the restrictions.
 {"return": {}}
 {"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": 
"BLOCK_JOB_ERROR", "data": {"device": "src", "operation": "write", "action": 
"report"}}
-{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": 
"BLOCK_JOB_COMPLETED", "data": {"device": "src", "len": 65536, "offset": 
OFFSET, "speed": 0, "type": "mirror", "error": "Operation not permitted"}}
+{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": 
"BLOCK_JOB_COMPLETED", "data": {"device": "src", "len": 2560, "offset": OFFSET, 
"speed": 0, "type": "mirror", "error": "Operation not permitted"}}
 {"return": []}
 read 65536/65536 bytes at offset 0
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
@@ -195,7 +195,7 @@
 Specify the 'raw' format explicitly to remove the restrictions.
 {"return": {}}
 {"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": 
"BLOCK_JOB_ERROR", "data": {"device": "src", "operation": "write", "action": 
"report"}}
-{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": 
"BLOCK_JOB_COMPLETED", "data": {"device": "src", "len": 65536, "offset": 
OFFSET, "speed": 0, "type": "mirror", "error": "Operation not permitted"}}
+{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": 
"BLOCK_JOB_COMPLETED", "data": {"device": "src", "len": 2048, "offset": OFFSET, 
"speed": 0, "type": "mirror", "error": "Operation not permitted"}}
 {"return": []}
 read 65536/65536 bytes at offset 0
 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)

Thanks,

Paolo

> Tested-by: Eric Blake <address@hidden>
> Reviewed-by: Eric Blake <address@hidden>
> Signed-off-by: Fam Zheng <address@hidden>
> 
> ---
> 
> v2: Add Eric's r-b.
>     Don't add '\' after '|'.
>     Add '/g/'
> ---
>  tests/qemu-iotests/109           |  3 ++-
>  tests/qemu-iotests/109.out       | 12 ++++++------
>  tests/qemu-iotests/common.filter |  6 ++++++
>  3 files changed, 14 insertions(+), 7 deletions(-)
> 
> diff --git a/tests/qemu-iotests/109 b/tests/qemu-iotests/109
> index 927151a..ce34c19 100755
> --- a/tests/qemu-iotests/109
> +++ b/tests/qemu-iotests/109
> @@ -80,7 +80,8 @@ for fmt in qcow qcow2 qed vdi vmdk vpc; do
>  
>      # This first test should fail: The image format was probed, we may not
>      # write an image header at the start of the image
> -    run_qemu "$TEST_IMG" "$TEST_IMG.src" "" "BLOCK_JOB_ERROR"
> +    run_qemu "$TEST_IMG" "$TEST_IMG.src" "" "BLOCK_JOB_ERROR" |
> +        _filter_block_job_len
>      $QEMU_IO -c 'read -P 0 0 64k' "$TEST_IMG" | _filter_qemu_io
>  
>  
> diff --git a/tests/qemu-iotests/109.out b/tests/qemu-iotests/109.out
> index 55fe536..6454b7e 100644
> --- a/tests/qemu-iotests/109.out
> +++ b/tests/qemu-iotests/109.out
> @@ -10,7 +10,7 @@ Automatically detecting the format is dangerous for raw 
> images, write operations
>  Specify the 'raw' format explicitly to remove the restrictions.
>  {"return": {}}
>  {"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": 
> "BLOCK_JOB_ERROR", "data": {"device": "src", "operation": "write", "action": 
> "report"}}
> -{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": 
> "BLOCK_JOB_COMPLETED", "data": {"device": "src", "len": 65536, "offset": 0, 
> "speed": 0, "type": "mirror", "error": "Operation not permitted"}}
> +{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": 
> "BLOCK_JOB_COMPLETED", "data": {"device": "src", "len": LEN, "offset": 0, 
> "speed": 0, "type": "mirror", "error": "Operation not permitted"}}
>  {"return": []}
>  read 65536/65536 bytes at offset 0
>  64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
> @@ -31,7 +31,7 @@ Automatically detecting the format is dangerous for raw 
> images, write operations
>  Specify the 'raw' format explicitly to remove the restrictions.
>  {"return": {}}
>  {"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": 
> "BLOCK_JOB_ERROR", "data": {"device": "src", "operation": "write", "action": 
> "report"}}
> -{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": 
> "BLOCK_JOB_COMPLETED", "data": {"device": "src", "len": 197120, "offset": 
> 512, "speed": 0, "type": "mirror", "error": "Operation not permitted"}}
> +{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": 
> "BLOCK_JOB_COMPLETED", "data": {"device": "src", "len": LEN, "offset": 512, 
> "speed": 0, "type": "mirror", "error": "Operation not permitted"}}
>  {"return": []}
>  read 65536/65536 bytes at offset 0
>  64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
> @@ -52,7 +52,7 @@ Automatically detecting the format is dangerous for raw 
> images, write operations
>  Specify the 'raw' format explicitly to remove the restrictions.
>  {"return": {}}
>  {"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": 
> "BLOCK_JOB_ERROR", "data": {"device": "src", "operation": "write", "action": 
> "report"}}
> -{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": 
> "BLOCK_JOB_COMPLETED", "data": {"device": "src", "len": 327680, "offset": 
> 262144, "speed": 0, "type": "mirror", "error": "Operation not permitted"}}
> +{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": 
> "BLOCK_JOB_COMPLETED", "data": {"device": "src", "len": LEN, "offset": 
> 262144, "speed": 0, "type": "mirror", "error": "Operation not permitted"}}
>  {"return": []}
>  read 65536/65536 bytes at offset 0
>  64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
> @@ -73,7 +73,7 @@ Automatically detecting the format is dangerous for raw 
> images, write operations
>  Specify the 'raw' format explicitly to remove the restrictions.
>  {"return": {}}
>  {"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": 
> "BLOCK_JOB_ERROR", "data": {"device": "src", "operation": "write", "action": 
> "report"}}
> -{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": 
> "BLOCK_JOB_COMPLETED", "data": {"device": "src", "len": 65536, "offset": 0, 
> "speed": 0, "type": "mirror", "error": "Operation not permitted"}}
> +{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": 
> "BLOCK_JOB_COMPLETED", "data": {"device": "src", "len": LEN, "offset": 0, 
> "speed": 0, "type": "mirror", "error": "Operation not permitted"}}
>  {"return": []}
>  read 65536/65536 bytes at offset 0
>  64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
> @@ -94,7 +94,7 @@ Automatically detecting the format is dangerous for raw 
> images, write operations
>  Specify the 'raw' format explicitly to remove the restrictions.
>  {"return": {}}
>  {"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": 
> "BLOCK_JOB_ERROR", "data": {"device": "src", "operation": "write", "action": 
> "report"}}
> -{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": 
> "BLOCK_JOB_COMPLETED", "data": {"device": "src", "len": 65536, "offset": 0, 
> "speed": 0, "type": "mirror", "error": "Operation not permitted"}}
> +{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": 
> "BLOCK_JOB_COMPLETED", "data": {"device": "src", "len": LEN, "offset": 0, 
> "speed": 0, "type": "mirror", "error": "Operation not permitted"}}
>  {"return": []}
>  read 65536/65536 bytes at offset 0
>  64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
> @@ -115,7 +115,7 @@ Automatically detecting the format is dangerous for raw 
> images, write operations
>  Specify the 'raw' format explicitly to remove the restrictions.
>  {"return": {}}
>  {"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": 
> "BLOCK_JOB_ERROR", "data": {"device": "src", "operation": "write", "action": 
> "report"}}
> -{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": 
> "BLOCK_JOB_COMPLETED", "data": {"device": "src", "len": 65536, "offset": 0, 
> "speed": 0, "type": "mirror", "error": "Operation not permitted"}}
> +{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": 
> "BLOCK_JOB_COMPLETED", "data": {"device": "src", "len": LEN, "offset": 0, 
> "speed": 0, "type": "mirror", "error": "Operation not permitted"}}
>  {"return": []}
>  read 65536/65536 bytes at offset 0
>  64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
> diff --git a/tests/qemu-iotests/common.filter 
> b/tests/qemu-iotests/common.filter
> index 1040013..5b2cb24 100644
> --- a/tests/qemu-iotests/common.filter
> +++ b/tests/qemu-iotests/common.filter
> @@ -92,6 +92,12 @@ _filter_block_job_offset()
>      sed -e 's/, "offset": [0-9]\+,/, "offset": OFFSET,/'
>  }
>  
> +# replace block job len
> +_filter_block_job_len()
> +{
> +    sed -e 's/, "len": [0-9]\+,/, "len": LEN,/g'
> +}
> +
>  # replace driver-specific options in the "Formatting..." line
>  _filter_img_create()
>  {
> 



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