On 2/13/19 7:48 AM, Max Reitz wrote:
On 12.02.19 22:21, Marc Olson wrote:
On 1/11/19 7:00 AM, Max Reitz wrote:
On 12.11.18 08:06, Marc Olson wrote:
[...]
diff --git a/qapi/block-core.json b/qapi/block-core.json
index d4fe710..72f7861 100644
--- a/qapi/block-core.json
+++ b/qapi/block
On 1/11/19 7:00 AM, Max Reitz wrote:
On 12.11.18 08:06, Marc Olson wrote:
Add a new rule type for blkdebug that instead of returning an error, can
inject latency to an IO.
Signed-off-by: Marc Olson
---
block/blkdebug.c | 79 +++---
docs
On 11/13/18 3:22 PM, John Snow wrote:
On 11/12/18 2:06 AM, Marc Olson via Qemu-devel wrote:
Break out the more common parts of the BlkdebugRule struct, and make
rule_check() more explicit about operating only on error injection types
so that additional rule types can be added in the future
On 11/11/18 11:36 PM, Dongli Zhang wrote:
On 11/12/2018 03:13 PM, Marc Olson via Qemu-devel wrote:
On 11/3/18 10:24 AM, Dongli Zhang wrote:
The 'write' latency of sector=40960 is set to a very large value. When the I/O
is stalled in guest due to that sector=40960 is accessed, I do see below
On 11/3/18 10:24 AM, Dongli Zhang wrote:
Hi all,
I tried with the patch at:
https://lists.gnu.org/archive/html/qemu-devel/2018-09/msg00394.html
The patch is applied to qemu-3.0.0.
Below configuration is used to test the feature for guest VM nvme.
# qemu-system-x86_64 \
-smp 4 -m 2000M
Add a new rule type for blkdebug that instead of returning an error, can
inject latency to an IO.
Signed-off-by: Marc Olson
---
block/blkdebug.c | 79 +++---
docs/devel/blkdebug.txt| 35 ++--
qapi/block-core.json | 31
Break out the more common parts of the BlkdebugRule struct, and make
rule_check() more explicit about operating only on error injection types
so that additional rule types can be added in the future.
Signed-off-by: Marc Olson
---
block/blkdebug.c | 59
set to true, and one with a non-zero error.
Signed-off-by: Marc Olson
---
block/blkdebug.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/block/blkdebug.c b/block/blkdebug.c
index 0759452..327049b 100644
--- a/block/blkdebug.c
+++ b/block/blkdebug.c
@@ -488,7 +488,7
On 11/2/18 10:49 AM, John Snow wrote:
On 11/02/2018 04:11 AM, Dongli Zhang wrote:
Hi,
Is there any way to emulate I/O timeout on qemu side (not fault injection in VM
kernel) without modifying qemu source code?
For instance, I would like to observe/study/debug the I/O timeout handling of
nvme,
On 09/14/2018 01:46 PM, John Snow wrote:
On 09/13/2018 12:48 PM, Marc Olson wrote:
Are there further thoughts on this patch?
The CI tools may have missed it since it appears to have been sent in
reply to the V1 instead of as a new thread. When you send a revision
out, can you send it as its
Are there further thoughts on this patch?
On 09/04/2018 05:24 PM, Marc Olson wrote:
Sometimes storage devices can be slow to respond, due to media errors, firmware
issues, SSD garbage collection, etc. This patch adds a new rule type to
blkdebug that allows injection of latency to I/O
an offset, and
can also apply upon state transitions.
Signed-off-by: Marc Olson
---
v2:
- Change so that delay rules are executed before error rules
- Add QMP support
- Add tests
---
block/blkdebug.c | 119 +++--
docs/devel/blkdebug.txt| 30
On 08/24/2018 09:11 AM, Eric Blake wrote:
On 08/24/2018 12:06 AM, Marc Olson via Qemu-devel wrote:
Allow rules to be created to inject latency into I/O operations.
Signed-off-by: Marc Olson
---
block/blkdebug.c | 101
++--
docs/devel
Allow rules to be created to inject latency into I/O operations.
Signed-off-by: Marc Olson
---
block/blkdebug.c| 101 ++--
docs/devel/blkdebug.txt | 30 ++
2 files changed, 103 insertions(+), 28 deletions(-)
diff --git a/block
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