linux-kernel - Re: [PATCH] nfs-utils: mount: really return from errno test

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Message-ID: <4E9718E3.8040805@RedHat.com>
Date:	Thu, 13 Oct 2011 12:59:15 -0400
From:	Steve Dickson <SteveD@...hat.com>
To:	Steve Dickson <SteveD@...hat.com>
CC:	Chuck Lever <chuck.lever@...cle.com>, Hamo <hamo.by@...il.com>,
	linux-nfs@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] nfs-utils: mount: really return from errno test

Looking further into this issue, I noticed all the following 
mounts were successful.

# mount -o v3 localhost:/home /mnt/home
# mount -o v4 localhost:/home /mnt/home
# mount -o v4 [fec0::2:5652:ff:fe20:8459]:/home /mnt/home
# mount -o v3 [fec0::2:5652:ff:fe20:8459]:/home /mnt/home

which the mount point, /mnt/home is mounted 4 different times 
to the same server. 

Is by design or a real problem?

steved.


On 10/13/2011 12:34 PM, Steve Dickson wrote:
> Yeah... I believe its this one
>    https://bugzilla.redhat.com/show_bug.cgi?id=744657
> 
> On 10/13/2011 10:53 AM, Chuck Lever wrote:
>> What was the presenting problem?  Is there a bugzilla report I can look at?
>>
>> On Oct 11, 2011, at 5:44 AM, Hamo wrote:
>>
>>> We should only try next address family if we meet ECONNREFUSED or EHOSTUNREACH
>>> for v4 or ECONNREFUSED or EOPNOTSUPP or EHOSTUNREACH for v3v2.
>>> Before, only a break in swich can not make the program out of for loop.
>>>
>>> Signed-off-by: Yang Bai <hamo.by@...il.com>
>>> ---
>>> utils/mount/stropts.c |    6 ++++--
>>> 1 files changed, 4 insertions(+), 2 deletions(-)
>>>
>>> diff --git a/utils/mount/stropts.c b/utils/mount/stropts.c
>>> index 314a806..4032bf3 100644
>>> --- a/utils/mount/stropts.c
>>> +++ b/utils/mount/stropts.c
>>> @@ -665,9 +665,10 @@ static int nfs_try_mount_v3v2(struct nfsmount_info *mi)
>>> 		case EHOSTUNREACH:
>>> 			continue;
>>> 		default:
>>> -			break;
>>> +			goto out;
>>> 		}
>>> 	}
>>> +out:
>>> 	return ret;
>>> }
>>>
>>> @@ -751,9 +752,10 @@ static int nfs_try_mount_v4(struct nfsmount_info *mi)
>>> 		case EHOSTUNREACH:
>>> 			continue;
>>> 		default:
>>> -			break;
>>> +			goto out;
>>> 		}
>>> 	}
>>> +out:
>>> 	return ret;
>>> }
>>>
>>> -- 
>>> 1.7.1
>>> --
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>>
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