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[Qemu-devel] [PATCH 5/6] blkdebug: optionally tie errors to a specific s
From: |
Paolo Bonzini |
Subject: |
[Qemu-devel] [PATCH 5/6] blkdebug: optionally tie errors to a specific sector |
Date: |
Wed, 6 Jun 2012 08:10:43 +0200 |
This makes blkdebug scripts more powerful, and independent of the
exact sequence of operations performed by streaming.
Signed-off-by: Paolo Bonzini <address@hidden>
---
block/blkdebug.c | 26 ++++++++++++++++++++++++--
1 file changed, 24 insertions(+), 2 deletions(-)
diff --git a/block/blkdebug.c b/block/blkdebug.c
index d12ebbf..59dcea0 100644
--- a/block/blkdebug.c
+++ b/block/blkdebug.c
@@ -59,6 +59,7 @@ typedef struct BlkdebugRule {
int error;
int immediately;
int once;
+ int64_t sector;
} inject;
struct {
int new_state;
@@ -85,6 +86,10 @@ static QemuOptsList inject_error_opts = {
.type = QEMU_OPT_NUMBER,
},
{
+ .name = "sector",
+ .type = QEMU_OPT_NUMBER,
+ },
+ {
.name = "once",
.type = QEMU_OPT_BOOL,
},
@@ -213,6 +218,7 @@ static int add_rule(QemuOpts *opts, void *opaque)
rule->options.inject.once = qemu_opt_get_bool(opts, "once", 0);
rule->options.inject.immediately =
qemu_opt_get_bool(opts, "immediately", 0);
+ rule->options.inject.sector = qemu_opt_get_number(opts, "sector", -1);
break;
case ACTION_SET_STATE:
@@ -343,7 +349,15 @@ static BlockDriverAIOCB
*blkdebug_aio_readv(BlockDriverState *bs,
BlockDriverCompletionFunc *cb, void *opaque)
{
BDRVBlkdebugState *s = bs->opaque;
- BlkdebugRule *rule = QSIMPLEQ_FIRST(&s->active_rules);
+ BlkdebugRule *rule = NULL;
+
+ QSIMPLEQ_FOREACH(rule, &s->active_rules, active_next) {
+ if (rule->options.inject.sector == -1 ||
+ (rule->options.inject.sector >= sector_num &&
+ rule->options.inject.sector < sector_num + nb_sectors)) {
+ break;
+ }
+ }
if (rule && rule->options.inject.error) {
return inject_error(bs, cb, opaque, rule);
@@ -357,7 +371,15 @@ static BlockDriverAIOCB
*blkdebug_aio_writev(BlockDriverState *bs,
BlockDriverCompletionFunc *cb, void *opaque)
{
BDRVBlkdebugState *s = bs->opaque;
- BlkdebugRule *rule = QSIMPLEQ_FIRST(&s->active_rules);
+ BlkdebugRule *rule = NULL;
+
+ QSIMPLEQ_FOREACH(rule, &s->active_rules, active_next) {
+ if (rule->options.inject.sector == -1 ||
+ (rule->options.inject.sector >= sector_num &&
+ rule->options.inject.sector < sector_num + nb_sectors)) {
+ break;
+ }
+ }
if (rule && rule->options.inject.error) {
return inject_error(bs, cb, opaque, rule);
--
1.7.10.1
- [Qemu-devel] [PATCH 0/6] blkdebug changes extracted from 1.2 streaming patches, Paolo Bonzini, 2012/06/06
- [Qemu-devel] [PATCH 1/6] blkdebug: remove sync i/o events, Paolo Bonzini, 2012/06/06
- [Qemu-devel] [PATCH 2/6] blkdebug: tiny cleanup, Paolo Bonzini, 2012/06/06
- [Qemu-devel] [PATCH 3/6] blkdebug: pass getlength to underlying file, Paolo Bonzini, 2012/06/06
- [Qemu-devel] [PATCH 5/6] blkdebug: optionally tie errors to a specific sector,
Paolo Bonzini <=
- [Qemu-devel] [PATCH 6/6] raw: hook into blkdebug, Paolo Bonzini, 2012/06/06
- [Qemu-devel] [PATCH 4/6] blkdebug: store list of active rules, Paolo Bonzini, 2012/06/06