[PATCH] Rbd: support copy-on-read option

[PATCH] Rbd: support copy-on-read option

[Li Wang]

From: Min Chen <minchen@ubuntukylin.com>

Signed-off-by: Min Chen <minchen@ubuntukylin.com>
Reviewed-by: Li Wang <liwang@ubuntukylin.com>
---
 doc/man/8/rbd.rst | 1 +
 src/rbd.cc        | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/doc/man/8/rbd.rst b/doc/man/8/rbd.rst
index 4552951..3fb747f 100644
--- a/doc/man/8/rbd.rst
+++ b/doc/man/8/rbd.rst
@@ -430,6 +430,7 @@ the running kernel.
 
 * ro - Map the image read-only.  Equivalent to --read-only.
 
+* ro - Map the image with copy-on-read turned on.
 
 Examples
 ========
diff --git a/src/rbd.cc b/src/rbd.cc
index 4355c4f..fdc35ba 100644
--- a/src/rbd.cc
+++ b/src/rbd.cc
@@ -2545,6 +2545,8 @@ static int parse_map_options(char *options)
         return 1;
     } else if (!strcmp(this_char, "rw") || !strcmp(this_char, "ro")) {
       put_map_option("rw", this_char);
+    } else if (!strcmp(this_char, "cor")) {
+      put_map_option("cor", this_char);
     } else {
       cerr << "rbd: unknown map option '" << this_char << "'" << std::endl;
       return 1;
-- 
1.9.1

Re: [PATCH] Rbd: support copy-on-read option

[Ilya Dryomov]

On Thu, May 21, 2015 at 10:16 AM, Li Wang <liwang@ubuntukylin.com> wrote:
> From: Min Chen <minchen@ubuntukylin.com>
>
> Signed-off-by: Min Chen <minchen@ubuntukylin.com>
> Reviewed-by: Li Wang <liwang@ubuntukylin.com>
> ---
>  doc/man/8/rbd.rst | 1 +
>  src/rbd.cc        | 2 ++
>  2 files changed, 3 insertions(+)
>
> diff --git a/doc/man/8/rbd.rst b/doc/man/8/rbd.rst
> index 4552951..3fb747f 100644
> --- a/doc/man/8/rbd.rst
> +++ b/doc/man/8/rbd.rst
> @@ -430,6 +430,7 @@ the running kernel.
>
>  * ro - Map the image read-only.  Equivalent to --read-only.
>
> +* ro - Map the image with copy-on-read turned on.

Need to change the name of the option, ro -> cor.

Thanks,

                Ilya

Re: [PATCH] Rbd: support copy-on-read option

[Li Wang]

Updated at https://github.com/ceph/ceph/pull/4735,
thanks for the comments

On 2015/5/21 17:12, Ilya Dryomov wrote:
> On Thu, May 21, 2015 at 10:16 AM, Li Wang <liwang@ubuntukylin.com> wrote:
>> From: Min Chen <minchen@ubuntukylin.com>
>>
>> Signed-off-by: Min Chen <minchen@ubuntukylin.com>
>> Reviewed-by: Li Wang <liwang@ubuntukylin.com>
>> ---
>>   doc/man/8/rbd.rst | 1 +
>>   src/rbd.cc        | 2 ++
>>   2 files changed, 3 insertions(+)
>>
>> diff --git a/doc/man/8/rbd.rst b/doc/man/8/rbd.rst
>> index 4552951..3fb747f 100644
>> --- a/doc/man/8/rbd.rst
>> +++ b/doc/man/8/rbd.rst
>> @@ -430,6 +430,7 @@ the running kernel.
>>
>>   * ro - Map the image read-only.  Equivalent to --read-only.
>>
>> +* ro - Map the image with copy-on-read turned on.
>
> Need to change the name of the option, ro -> cor.
>
> Thanks,
>
>                  Ilya
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