[Qemu-devel] [PATCH] gluster: fix .bdrv_reopen_prepare when backing file is a JSON object

[Qemu-devel] [PATCH] gluster: fix .bdrv_reopen_prepare when backing file is a JSON object

[Stefano Garzarella]

When the backing_file is specified as a JSON object, the
qemu_gluster_reopen_prepare() fails with this message:
    invalid URI json:{"server.0.host": ...}

In this case, we should call qemu_gluster_init() using the QDict
'state->options' that contains the parameters already parsed.

Buglink: https://bugzilla.redhat.com/show_bug.cgi?id=1542445
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
---
 block/gluster.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/block/gluster.c b/block/gluster.c
index 62f8ff2147..26971db1ea 100644
--- a/block/gluster.c
+++ b/block/gluster.c
@@ -931,7 +931,16 @@ static int qemu_gluster_reopen_prepare(BDRVReopenState *state,
     gconf->has_debug = true;
     gconf->logfile = g_strdup(s->logfile);
     gconf->has_logfile = true;
-    reop_s->glfs = qemu_gluster_init(gconf, state->bs->filename, NULL, errp);
+    /*
+     * If 'bs->filename' starts with "json:", then 'state->options' will
+     * contain the parameters already parsed.
+     */
+    if (state->bs->filename && !strstart(state->bs->filename, "json:", NULL)) {
+        reop_s->glfs = qemu_gluster_init(gconf, state->bs->filename, NULL,
+                                         errp);
+    } else {
+        reop_s->glfs = qemu_gluster_init(gconf, NULL, state->options, errp);
+    }
     if (reop_s->glfs == NULL) {
         ret = -errno;
         goto exit;
-- 
2.20.1

Re: [Qemu-devel] [PATCH] gluster: fix .bdrv_reopen_prepare when backing file is a JSON object

[Max Reitz]

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On 12.07.19 12:46, Stefano Garzarella wrote:
> When the backing_file is specified as a JSON object, the
> qemu_gluster_reopen_prepare() fails with this message:
>     invalid URI json:{"server.0.host": ...}
> 
> In this case, we should call qemu_gluster_init() using the QDict
> 'state->options' that contains the parameters already parsed.
> 
> Buglink: https://bugzilla.redhat.com/show_bug.cgi?id=1542445
> Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
> ---
>  block/gluster.c | 11 ++++++++++-
>  1 file changed, 10 insertions(+), 1 deletion(-)
> 
> diff --git a/block/gluster.c b/block/gluster.c
> index 62f8ff2147..26971db1ea 100644
> --- a/block/gluster.c
> +++ b/block/gluster.c
> @@ -931,7 +931,16 @@ static int qemu_gluster_reopen_prepare(BDRVReopenState *state,
>      gconf->has_debug = true;
>      gconf->logfile = g_strdup(s->logfile);
>      gconf->has_logfile = true;
> -    reop_s->glfs = qemu_gluster_init(gconf, state->bs->filename, NULL, errp);
> +    /*
> +     * If 'bs->filename' starts with "json:", then 'state->options' will
> +     * contain the parameters already parsed.
> +     */
> +    if (state->bs->filename && !strstart(state->bs->filename, "json:", NULL)) {
> +        reop_s->glfs = qemu_gluster_init(gconf, state->bs->filename, NULL,
> +                                         errp);
> +    } else {
> +        reop_s->glfs = qemu_gluster_init(gconf, NULL, state->options, errp);
> +    }

Hmmm, aren’t they always in state->options?

Max


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Re: [Qemu-devel] [PATCH] gluster: fix .bdrv_reopen_prepare when backing file is a JSON object

[Stefano Garzarella]

On Fri, Jul 12, 2019 at 08:35:12PM +0200, Max Reitz wrote:
> On 12.07.19 12:46, Stefano Garzarella wrote:
> > When the backing_file is specified as a JSON object, the
> > qemu_gluster_reopen_prepare() fails with this message:
> >     invalid URI json:{"server.0.host": ...}
> > 
> > In this case, we should call qemu_gluster_init() using the QDict
> > 'state->options' that contains the parameters already parsed.
> > 
> > Buglink: https://bugzilla.redhat.com/show_bug.cgi?id=1542445
> > Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
> > ---
> >  block/gluster.c | 11 ++++++++++-
> >  1 file changed, 10 insertions(+), 1 deletion(-)
> > 
> > diff --git a/block/gluster.c b/block/gluster.c
> > index 62f8ff2147..26971db1ea 100644
> > --- a/block/gluster.c
> > +++ b/block/gluster.c
> > @@ -931,7 +931,16 @@ static int qemu_gluster_reopen_prepare(BDRVReopenState *state,
> >      gconf->has_debug = true;
> >      gconf->logfile = g_strdup(s->logfile);
> >      gconf->has_logfile = true;
> > -    reop_s->glfs = qemu_gluster_init(gconf, state->bs->filename, NULL, errp);
> > +    /*
> > +     * If 'bs->filename' starts with "json:", then 'state->options' will
> > +     * contain the parameters already parsed.
> > +     */
> > +    if (state->bs->filename && !strstart(state->bs->filename, "json:", NULL)) {
> > +        reop_s->glfs = qemu_gluster_init(gconf, state->bs->filename, NULL,
> > +                                         errp);
> > +    } else {
> > +        reop_s->glfs = qemu_gluster_init(gconf, NULL, state->options, errp);
> > +    }
> 
> Hmmm, aren’t they always in state->options?

Yes, you are rigth, but the qemu_gluster_parse() doesn't search for the
'filename' in the QDict *options.

Maybe I can simply modify it in this way in order to hanlde this case,
calling qemu_gluster_init() only with 'state->options'.

diff --git a/block/gluster.c b/block/gluster.c
index 26971db1ea..91d674cd2b 100644
--- a/block/gluster.c
+++ b/block/gluster.c
@@ -695,6 +695,11 @@ static int qemu_gluster_parse(BlockdevOptionsGluster *gconf,
                               QDict *options, Error **errp)
 {
     int ret;
+
+    if (!filename) {
+        filename = qdict_get_try_str(options, GLUSTER_OPT_FILENAME);
+    }
+
     if (filename) {
         ret = qemu_gluster_parse_uri(gconf, filename);
         if (ret < 0) {


Do you think it is better/cleaner?

Thanks,
Stefano

Re: [Qemu-devel] [PATCH] gluster: fix .bdrv_reopen_prepare when backing file is a JSON object

[Max Reitz]

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On 15.07.19 10:16, Stefano Garzarella wrote:
> On Fri, Jul 12, 2019 at 08:35:12PM +0200, Max Reitz wrote:
>> On 12.07.19 12:46, Stefano Garzarella wrote:
>>> When the backing_file is specified as a JSON object, the
>>> qemu_gluster_reopen_prepare() fails with this message:
>>>     invalid URI json:{"server.0.host": ...}
>>>
>>> In this case, we should call qemu_gluster_init() using the QDict
>>> 'state->options' that contains the parameters already parsed.
>>>
>>> Buglink: https://bugzilla.redhat.com/show_bug.cgi?id=1542445
>>> Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
>>> ---
>>>  block/gluster.c | 11 ++++++++++-
>>>  1 file changed, 10 insertions(+), 1 deletion(-)
>>>
>>> diff --git a/block/gluster.c b/block/gluster.c
>>> index 62f8ff2147..26971db1ea 100644
>>> --- a/block/gluster.c
>>> +++ b/block/gluster.c
>>> @@ -931,7 +931,16 @@ static int qemu_gluster_reopen_prepare(BDRVReopenState *state,
>>>      gconf->has_debug = true;
>>>      gconf->logfile = g_strdup(s->logfile);
>>>      gconf->has_logfile = true;
>>> -    reop_s->glfs = qemu_gluster_init(gconf, state->bs->filename, NULL, errp);
>>> +    /*
>>> +     * If 'bs->filename' starts with "json:", then 'state->options' will
>>> +     * contain the parameters already parsed.
>>> +     */
>>> +    if (state->bs->filename && !strstart(state->bs->filename, "json:", NULL)) {
>>> +        reop_s->glfs = qemu_gluster_init(gconf, state->bs->filename, NULL,
>>> +                                         errp);
>>> +    } else {
>>> +        reop_s->glfs = qemu_gluster_init(gconf, NULL, state->options, errp);
>>> +    }
>>
>> Hmmm, aren’t they always in state->options?
> 
> Yes, you are rigth, but the qemu_gluster_parse() doesn't search for the
> 'filename' in the QDict *options.
> 
> Maybe I can simply modify it in this way in order to hanlde this case,
> calling qemu_gluster_init() only with 'state->options'.
> 
> diff --git a/block/gluster.c b/block/gluster.c
> index 26971db1ea..91d674cd2b 100644
> --- a/block/gluster.c
> +++ b/block/gluster.c
> @@ -695,6 +695,11 @@ static int qemu_gluster_parse(BlockdevOptionsGluster *gconf,
>                                QDict *options, Error **errp)
>  {
>      int ret;
> +
> +    if (!filename) {
> +        filename = qdict_get_try_str(options, GLUSTER_OPT_FILENAME);
> +    }
> +
>      if (filename) {
>          ret = qemu_gluster_parse_uri(gconf, filename);
>          if (ret < 0) {
> 
> 
> Do you think it is better/cleaner?

No, because the rest of the function completely ignores @options if
@filename is set.

Hm.  I can’t think of anything better than your original solution, then.
 Except the “state->bs->filename” should probably be a
“state->bs->filename[0]” (as Patchew has pointed out).

Max


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Re: [Qemu-devel] [PATCH] gluster: fix .bdrv_reopen_prepare when backing file is a JSON object

[Stefano Garzarella]

On Mon, Jul 15, 2019 at 12:53:57PM +0200, Max Reitz wrote:
> On 15.07.19 10:16, Stefano Garzarella wrote:
> > On Fri, Jul 12, 2019 at 08:35:12PM +0200, Max Reitz wrote:
> >> On 12.07.19 12:46, Stefano Garzarella wrote:
> >>> When the backing_file is specified as a JSON object, the
> >>> qemu_gluster_reopen_prepare() fails with this message:
> >>>     invalid URI json:{"server.0.host": ...}
> >>>
> >>> In this case, we should call qemu_gluster_init() using the QDict
> >>> 'state->options' that contains the parameters already parsed.
> >>>
> >>> Buglink: https://bugzilla.redhat.com/show_bug.cgi?id=1542445
> >>> Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
> >>> ---
> >>>  block/gluster.c | 11 ++++++++++-
> >>>  1 file changed, 10 insertions(+), 1 deletion(-)
> >>>
> >>> diff --git a/block/gluster.c b/block/gluster.c
> >>> index 62f8ff2147..26971db1ea 100644
> >>> --- a/block/gluster.c
> >>> +++ b/block/gluster.c
> >>> @@ -931,7 +931,16 @@ static int qemu_gluster_reopen_prepare(BDRVReopenState *state,
> >>>      gconf->has_debug = true;
> >>>      gconf->logfile = g_strdup(s->logfile);
> >>>      gconf->has_logfile = true;
> >>> -    reop_s->glfs = qemu_gluster_init(gconf, state->bs->filename, NULL, errp);
> >>> +    /*
> >>> +     * If 'bs->filename' starts with "json:", then 'state->options' will
> >>> +     * contain the parameters already parsed.
> >>> +     */
> >>> +    if (state->bs->filename && !strstart(state->bs->filename, "json:", NULL)) {
> >>> +        reop_s->glfs = qemu_gluster_init(gconf, state->bs->filename, NULL,
> >>> +                                         errp);
> >>> +    } else {
> >>> +        reop_s->glfs = qemu_gluster_init(gconf, NULL, state->options, errp);
> >>> +    }
> >>
> >> Hmmm, aren’t they always in state->options?
> > 
> > Yes, you are rigth, but the qemu_gluster_parse() doesn't search for the
> > 'filename' in the QDict *options.
> > 
> > Maybe I can simply modify it in this way in order to hanlde this case,
> > calling qemu_gluster_init() only with 'state->options'.
> > 
> > diff --git a/block/gluster.c b/block/gluster.c
> > index 26971db1ea..91d674cd2b 100644
> > --- a/block/gluster.c
> > +++ b/block/gluster.c
> > @@ -695,6 +695,11 @@ static int qemu_gluster_parse(BlockdevOptionsGluster *gconf,
> >                                QDict *options, Error **errp)
> >  {
> >      int ret;
> > +
> > +    if (!filename) {
> > +        filename = qdict_get_try_str(options, GLUSTER_OPT_FILENAME);
> > +    }
> > +
> >      if (filename) {
> >          ret = qemu_gluster_parse_uri(gconf, filename);
> >          if (ret < 0) {
> > 
> > 
> > Do you think it is better/cleaner?
> 
> No, because the rest of the function completely ignores @options if
> @filename is set.
> 
> Hm.  I can’t think of anything better than your original solution, then.
>  Except the “state->bs->filename” should probably be a
> “state->bs->filename[0]” (as Patchew has pointed out).

Sure, I'll fix it in the v2.

Thanks,
Stefano

Re: [Qemu-devel] [PATCH] gluster: fix .bdrv_reopen_prepare when backing file is a JSON object

[Max Reitz]

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On 15.07.19 14:50, Stefano Garzarella wrote:
> On Mon, Jul 15, 2019 at 12:53:57PM +0200, Max Reitz wrote:
>> On 15.07.19 10:16, Stefano Garzarella wrote:
>>> On Fri, Jul 12, 2019 at 08:35:12PM +0200, Max Reitz wrote:
>>>> On 12.07.19 12:46, Stefano Garzarella wrote:
>>>>> When the backing_file is specified as a JSON object, the
>>>>> qemu_gluster_reopen_prepare() fails with this message:
>>>>>     invalid URI json:{"server.0.host": ...}
>>>>>
>>>>> In this case, we should call qemu_gluster_init() using the QDict
>>>>> 'state->options' that contains the parameters already parsed.
>>>>>
>>>>> Buglink: https://bugzilla.redhat.com/show_bug.cgi?id=1542445
>>>>> Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
>>>>> ---
>>>>>  block/gluster.c | 11 ++++++++++-
>>>>>  1 file changed, 10 insertions(+), 1 deletion(-)
>>>>>
>>>>> diff --git a/block/gluster.c b/block/gluster.c
>>>>> index 62f8ff2147..26971db1ea 100644
>>>>> --- a/block/gluster.c
>>>>> +++ b/block/gluster.c
>>>>> @@ -931,7 +931,16 @@ static int qemu_gluster_reopen_prepare(BDRVReopenState *state,
>>>>>      gconf->has_debug = true;
>>>>>      gconf->logfile = g_strdup(s->logfile);
>>>>>      gconf->has_logfile = true;
>>>>> -    reop_s->glfs = qemu_gluster_init(gconf, state->bs->filename, NULL, errp);
>>>>> +    /*
>>>>> +     * If 'bs->filename' starts with "json:", then 'state->options' will
>>>>> +     * contain the parameters already parsed.
>>>>> +     */
>>>>> +    if (state->bs->filename && !strstart(state->bs->filename, "json:", NULL)) {
>>>>> +        reop_s->glfs = qemu_gluster_init(gconf, state->bs->filename, NULL,
>>>>> +                                         errp);
>>>>> +    } else {
>>>>> +        reop_s->glfs = qemu_gluster_init(gconf, NULL, state->options, errp);
>>>>> +    }
>>>>
>>>> Hmmm, aren’t they always in state->options?
>>>
>>> Yes, you are rigth, but the qemu_gluster_parse() doesn't search for the
>>> 'filename' in the QDict *options.
>>>
>>> Maybe I can simply modify it in this way in order to hanlde this case,
>>> calling qemu_gluster_init() only with 'state->options'.
>>>
>>> diff --git a/block/gluster.c b/block/gluster.c
>>> index 26971db1ea..91d674cd2b 100644
>>> --- a/block/gluster.c
>>> +++ b/block/gluster.c
>>> @@ -695,6 +695,11 @@ static int qemu_gluster_parse(BlockdevOptionsGluster *gconf,
>>>                                QDict *options, Error **errp)
>>>  {
>>>      int ret;
>>> +
>>> +    if (!filename) {
>>> +        filename = qdict_get_try_str(options, GLUSTER_OPT_FILENAME);
>>> +    }
>>> +
>>>      if (filename) {
>>>          ret = qemu_gluster_parse_uri(gconf, filename);
>>>          if (ret < 0) {
>>>
>>>
>>> Do you think it is better/cleaner?
>>
>> No, because the rest of the function completely ignores @options if
>> @filename is set.
>>
>> Hm.  I can’t think of anything better than your original solution, then.
>>  Except the “state->bs->filename” should probably be a
>> “state->bs->filename[0]” (as Patchew has pointed out).
> 
> Sure, I'll fix it in the v2.

Oh, wait.  You can actually just use state->bs->exact_filename.  That
will never be a json:{} filename, so you don’t have to do the prefix
check (just see whether it is empty).

Max


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Re: [Qemu-devel] [PATCH] gluster: fix .bdrv_reopen_prepare when backing file is a JSON object

[Stefano Garzarella]

On Mon, Jul 15, 2019 at 03:00:29PM +0200, Max Reitz wrote:
> On 15.07.19 14:50, Stefano Garzarella wrote:
> > On Mon, Jul 15, 2019 at 12:53:57PM +0200, Max Reitz wrote:
> >> On 15.07.19 10:16, Stefano Garzarella wrote:
> >>> On Fri, Jul 12, 2019 at 08:35:12PM +0200, Max Reitz wrote:
> >>>> On 12.07.19 12:46, Stefano Garzarella wrote:
> >>>>> When the backing_file is specified as a JSON object, the
> >>>>> qemu_gluster_reopen_prepare() fails with this message:
> >>>>>     invalid URI json:{"server.0.host": ...}
> >>>>>
> >>>>> In this case, we should call qemu_gluster_init() using the QDict
> >>>>> 'state->options' that contains the parameters already parsed.
> >>>>>
> >>>>> Buglink: https://bugzilla.redhat.com/show_bug.cgi?id=1542445
> >>>>> Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
> >>>>> ---
> >>>>>  block/gluster.c | 11 ++++++++++-
> >>>>>  1 file changed, 10 insertions(+), 1 deletion(-)
> >>>>>
> >>>>> diff --git a/block/gluster.c b/block/gluster.c
> >>>>> index 62f8ff2147..26971db1ea 100644
> >>>>> --- a/block/gluster.c
> >>>>> +++ b/block/gluster.c
> >>>>> @@ -931,7 +931,16 @@ static int qemu_gluster_reopen_prepare(BDRVReopenState *state,
> >>>>>      gconf->has_debug = true;
> >>>>>      gconf->logfile = g_strdup(s->logfile);
> >>>>>      gconf->has_logfile = true;
> >>>>> -    reop_s->glfs = qemu_gluster_init(gconf, state->bs->filename, NULL, errp);
> >>>>> +    /*
> >>>>> +     * If 'bs->filename' starts with "json:", then 'state->options' will
> >>>>> +     * contain the parameters already parsed.
> >>>>> +     */
> >>>>> +    if (state->bs->filename && !strstart(state->bs->filename, "json:", NULL)) {
> >>>>> +        reop_s->glfs = qemu_gluster_init(gconf, state->bs->filename, NULL,
> >>>>> +                                         errp);
> >>>>> +    } else {
> >>>>> +        reop_s->glfs = qemu_gluster_init(gconf, NULL, state->options, errp);
> >>>>> +    }
> >>>>
> >>>> Hmmm, aren’t they always in state->options?
> >>>
> >>> Yes, you are rigth, but the qemu_gluster_parse() doesn't search for the
> >>> 'filename' in the QDict *options.
> >>>
> >>> Maybe I can simply modify it in this way in order to hanlde this case,
> >>> calling qemu_gluster_init() only with 'state->options'.
> >>>
> >>> diff --git a/block/gluster.c b/block/gluster.c
> >>> index 26971db1ea..91d674cd2b 100644
> >>> --- a/block/gluster.c
> >>> +++ b/block/gluster.c
> >>> @@ -695,6 +695,11 @@ static int qemu_gluster_parse(BlockdevOptionsGluster *gconf,
> >>>                                QDict *options, Error **errp)
> >>>  {
> >>>      int ret;
> >>> +
> >>> +    if (!filename) {
> >>> +        filename = qdict_get_try_str(options, GLUSTER_OPT_FILENAME);
> >>> +    }
> >>> +
> >>>      if (filename) {
> >>>          ret = qemu_gluster_parse_uri(gconf, filename);
> >>>          if (ret < 0) {
> >>>
> >>>
> >>> Do you think it is better/cleaner?
> >>
> >> No, because the rest of the function completely ignores @options if
> >> @filename is set.
> >>
> >> Hm.  I can’t think of anything better than your original solution, then.
> >>  Except the “state->bs->filename” should probably be a
> >> “state->bs->filename[0]” (as Patchew has pointed out).
> > 
> > Sure, I'll fix it in the v2.
> 
> Oh, wait.  You can actually just use state->bs->exact_filename.  That
> will never be a json:{} filename, so you don’t have to do the prefix
> check (just see whether it is empty).

Yeah, thanks for the suggestion!

Stefano

Re: [Qemu-devel] [PATCH] gluster: fix .bdrv_reopen_prepare when backing file is a JSON object

[no-reply]

Patchew URL: https://patchew.org/QEMU/20190712104617.94707-1-sgarzare@redhat.com/



Hi,

This series failed the asan build test. Please find the testing commands and
their output below. If you have Docker installed, you can probably reproduce it
locally.

=== TEST SCRIPT BEGIN ===
#!/bin/bash
make docker-image-fedora V=1 NETWORK=1
time make docker-test-debug@fedora TARGET_LIST=x86_64-softmmu J=14 NETWORK=1
=== TEST SCRIPT END ===

  CC      audio/noaudio.o
  CC      audio/wavaudio.o
  CC      audio/mixeng.o
/tmp/qemu-test/src/block/gluster.c:938:20: error: address of array 'state->bs->filename' will always evaluate to 'true' [-Werror,-Wpointer-bool-conversion]
    if (state->bs->filename && !strstart(state->bs->filename, "json:", NULL)) {
        ~~~~~~~~~~~^~~~~~~~ ~~
1 error generated.


The full log is available at
http://patchew.org/logs/20190712104617.94707-1-sgarzare@redhat.com/testing.asan/?type=message.
---
Email generated automatically by Patchew [https://patchew.org/].
Please send your feedback to patchew-devel@redhat.com