Multipath blacklisted devices

Multipath blacklisted devices

[URZ- AG]

Hi,

I'm using the latest git version of multipath-tools with a 2.6.16 kernel.
Today I've tried to blacklist a scsi device in the multipath.conf file 
using the following entry:
        devnode "^(sda)[0-9]*"

This didn't work at all, it seems that multipath doesn't use the 
blacklist entries found in multipatch.conf.
I've patched the source code to hardcode that device and this works well.
I've tried to debug the config loading but my C knowledge is too poor 
and I haven't been able to find out whats wrong so far.
Any help for debugging would be greatly apreciated, I've tried to write 
some code which dumps all entries read from the config file but it 
didn't work so far.

Thanks for your time and great work,
Arsène

Re: Multipath blacklisted devices

[Christophe Varoqui]

URZ- AG a écrit :
> Hi,
>
> I'm using the latest git version of multipath-tools with a 2.6.16 kernel.
> Today I've tried to blacklist a scsi device in the multipath.conf file 
> using the following entry:
>        devnode "^(sda)[0-9]*"
>
> This didn't work at all, it seems that multipath doesn't use the 
> blacklist entries found in multipatch.conf.
> I've patched the source code to hardcode that device and this works well.
> I've tried to debug the config loading but my C knowledge is too poor 
> and I haven't been able to find out whats wrong so far.
> Any help for debugging would be greatly apreciated, I've tried to 
> write some code which dumps all entries read from the config file but 
> it didn't work so far.
>
> Thanks for your time and great work,
> Arsène
>
> -- 
> dm-devel mailing list
> dm-devel@redhat.com
> https://www.redhat.com/mailman/listinfo/dm-devel
>
It works here :(
Try to extract the live blacklist with :

# multipathd/multipathd -k"show conf"
...
blacklist {
        devnode ^(sda)[0-9]*
        devnode ^(ram|raw|loop|fd|md|dm-|sr|scd|st)[0-9]*
        devnode ^hd[a-z]
        devnode ^cciss!c[0-9]d[0-9]*
        wwid 26353900f02796769
        device {
                vendor IET
                product A.*A
        }
        device {
                vendor DGC
                product LUNZ
        }
}
...

Regards,
cvaroqui

Re: Multipath blacklisted devices

[Arsene Gschwind]

Hi Christophe,

I've found the problem, my entry in multipath.conf was devnode_blacklist 
{ } and it should be only blacklist{}.
You may have to correct multipath.conf.synthetic provided by the tarball 
( and the git version) because I've used that file to create my own and 
it includes this error.

Thanks a lot for your help and work
Arsène

Christophe Varoqui wrote:

> URZ- AG a écrit :
>
>> Hi,
>>
>> I'm using the latest git version of multipath-tools with a 2.6.16 
>> kernel.
>> Today I've tried to blacklist a scsi device in the multipath.conf 
>> file using the following entry:
>>        devnode "^(sda)[0-9]*"
>>
>> This didn't work at all, it seems that multipath doesn't use the 
>> blacklist entries found in multipatch.conf.
>> I've patched the source code to hardcode that device and this works 
>> well.
>> I've tried to debug the config loading but my C knowledge is too poor 
>> and I haven't been able to find out whats wrong so far.
>> Any help for debugging would be greatly apreciated, I've tried to 
>> write some code which dumps all entries read from the config file but 
>> it didn't work so far.
>>
>> Thanks for your time and great work,
>> Arsène
>>
>> -- 
>> dm-devel mailing list
>> dm-devel@redhat.com
>> https://www.redhat.com/mailman/listinfo/dm-devel
>>
> It works here :(
> Try to extract the live blacklist with :
>
> # multipathd/multipathd -k"show conf"
> ...
> blacklist {
>        devnode ^(sda)[0-9]*
>        devnode ^(ram|raw|loop|fd|md|dm-|sr|scd|st)[0-9]*
>        devnode ^hd[a-z]
>        devnode ^cciss!c[0-9]d[0-9]*
>        wwid 26353900f02796769
>        device {
>                vendor IET
>                product A.*A
>        }
>        device {
>                vendor DGC
>                product LUNZ
>        }
> }
> ...
>
> Regards,
> cvaroqui
>
> -- 
> dm-devel mailing list
> dm-devel@redhat.com
> https://www.redhat.com/mailman/listinfo/dm-devel


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