diff mbox series

[16/21] libmultipath: tur checker: leave unsupported paths alone

Message ID 20181011222707.3631-17-mwilck@suse.com (mailing list archive)
State Not Applicable, archived
Delegated to: christophe varoqui
Headers show
Series libmultipath: checkers overhaul | expand

Commit Message

Martin Wilck Oct. 11, 2018, 10:27 p.m. UTC
A checker shouldn't set the path state to PATH_DOWN if it fails
to obtain information about the path in the first place. Add logic
to the checker to distinguish a failed path from an unsupported path.

Signed-off-by: Martin Wilck <mwilck@suse.com>
---
 libmultipath/checkers/tur.c | 4 ++++
 1 file changed, 4 insertions(+)

Comments

Benjamin Marzinski Oct. 25, 2018, 9:42 p.m. UTC | #1
On Fri, Oct 12, 2018 at 12:27:02AM +0200, Martin Wilck wrote:
> A checker shouldn't set the path state to PATH_DOWN if it fails
> to obtain information about the path in the first place. Add logic
> to the checker to distinguish a failed path from an unsupported path.
> 

Reviewed-by: Benjamin Marzinski <bmarzins@redhat.com>

> Signed-off-by: Martin Wilck <mwilck@suse.com>
> ---
>  libmultipath/checkers/tur.c | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/libmultipath/checkers/tur.c b/libmultipath/checkers/tur.c
> index 448c396e..8f4bdc8b 100644
> --- a/libmultipath/checkers/tur.c
> +++ b/libmultipath/checkers/tur.c
> @@ -125,6 +125,10 @@ retry:
>  	io_hdr.timeout = timeout * 1000;
>  	io_hdr.pack_id = 0;
>  	if (ioctl(fd, SG_IO, &io_hdr) < 0) {
> +		if (errno == ENOTTY) {
> +			*msgid = CHECKER_MSGID_UNSUPPORTED;
> +			return PATH_WILD;
> +		}
>  		*msgid = CHECKER_MSGID_DOWN;
>  		return PATH_DOWN;
>  	}
> -- 
> 2.19.0

--
dm-devel mailing list
dm-devel@redhat.com
https://www.redhat.com/mailman/listinfo/dm-devel
diff mbox series

Patch

diff --git a/libmultipath/checkers/tur.c b/libmultipath/checkers/tur.c
index 448c396e..8f4bdc8b 100644
--- a/libmultipath/checkers/tur.c
+++ b/libmultipath/checkers/tur.c
@@ -125,6 +125,10 @@  retry:
 	io_hdr.timeout = timeout * 1000;
 	io_hdr.pack_id = 0;
 	if (ioctl(fd, SG_IO, &io_hdr) < 0) {
+		if (errno == ENOTTY) {
+			*msgid = CHECKER_MSGID_UNSUPPORTED;
+			return PATH_WILD;
+		}
 		*msgid = CHECKER_MSGID_DOWN;
 		return PATH_DOWN;
 	}