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Old 09-17-2010, 06:19 PM
Paras pradhan
 
Default multipath troubleshoot

Hi,
My storage admin just assigned a Lun (fibre) to my server. Then re scanned using

echo "1" > /sys/class/fc_host/host5/issue_lip

echo "1" > /sys/class/fc_host/host6/issue_lip

I can see the scsi device using dmesg

But mpath device are not created for this LUN


Pleas see below. The last 4 should be active and I think this is the problem

Kernel: 2.6.18-164.11.1.el5xen , EL 5.5
--

[root@cvprd3 lvm]# multipathd -k
multipathd> show paths
hcil dev dev_t pri dm_st chk_st next_check
5:0:0:0 sdb 8:16 1 [active][ready] XXX....... 7/20
5:0:0:1 sdc 8:32 1 [active][ready] XXX....... 7/20
5:0:0:16384 sdd 8:48 1 [active][ready] XXX....... 7/20
5:0:0:16385 sde 8:64 1 [active][ready] XXX....... 7/20
5:0:0:32768 sdf 8:80 1 [active][ready] XXX....... 7/20
5:0:0:32769 sdg 8:96 1 [active][ready] XXX....... 7/20
5:0:0:49152 sdh 8:112 1 [active][ready] XXX....... 7/20
5:0:0:49153 sdi 8:128 1 [active][ready] XXX....... 7/20
5:0:0:2 sdj 8:144 1 [active][ready] XXX....... 7/20
5:0:0:16386 sdk 8:160 1 [active][ready] XXX....... 7/20
5:0:0:32770 sdl 8:176 1 [active][ready] XXX....... 7/20
5:0:0:49154 sdm 8:192 1 [active][ready] XXX....... 7/20
5:0:0:3 sdn 8:208 1 [active][ready] XXX....... 7/20
5:0:0:16387 sdo 8:224 1 [active][ready] XXX....... 7/20
5:0:0:32771 sdp 8:240 1 [active][ready] XXX....... 7/20
5:0:0:49155 sdq 65:0 1 [active][ready] XXX....... 7/20
5:0:0:4 sdr 65:16 1 [active][ready] XXX....... 7/20
5:0:0:16388 sds 65:32 1 [active][ready] XXX....... 7/20
5:0:0:32772 sdt 65:48 1 [active][ready] XXX....... 7/20
5:0:0:49156 sdu 65:64 1 [active][ready] XXX....... 7/20
5:0:0:5 sdv 65:80 0 [undef] [faulty] [orphan]
5:0:0:16389 sdw 65:96 0 [undef] [faulty] [orphan]
5:0:0:32773 sdx 65:112 0 [undef] [faulty] [orphan]
5:0:0:49157 sdy 65:128 0 [undef] [faulty] [orphan]
multipathd>

Thanks in Adv
Paras.
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Old 09-21-2010, 05:23 PM
Paras pradhan
 
Default multipath troubleshoot

Reboot in to the latest kernel fixed this issue.

Paras.

On Fri, Sep 17, 2010 at 1:19 PM, Paras pradhan <pradhanparas@gmail.com> wrote:
> Hi,
> My storage admin just assigned a Lun (fibre) to my server. Then re scanned using
>
> echo "1" > /sys/class/fc_host/host5/issue_lip
>
> echo "1" > /sys/class/fc_host/host6/issue_lip
>
> I can see the scsi device using dmesg
>
> But mpath device are not created for this LUN
>
>
> Pleas see below. The last 4 should be active and I think this is the problem
>
> Kernel: 2.6.18-164.11.1.el5xen , EL 5.5
> --
>
> [root@cvprd3 lvm]# multipathd -k
> multipathd> show paths
> hcil * * * *dev dev_t *pri dm_st * chk_st * next_check
> 5:0:0:0 * * sdb 8:16 * 1 * [active][ready] *XXX....... 7/20
> 5:0:0:1 * * sdc 8:32 * 1 * [active][ready] *XXX....... 7/20
> 5:0:0:16384 sdd 8:48 * 1 * [active][ready] *XXX....... 7/20
> 5:0:0:16385 sde 8:64 * 1 * [active][ready] *XXX....... 7/20
> 5:0:0:32768 sdf 8:80 * 1 * [active][ready] *XXX....... 7/20
> 5:0:0:32769 sdg 8:96 * 1 * [active][ready] *XXX....... 7/20
> 5:0:0:49152 sdh 8:112 *1 * [active][ready] *XXX....... 7/20
> 5:0:0:49153 sdi 8:128 *1 * [active][ready] *XXX....... 7/20
> 5:0:0:2 * * sdj 8:144 *1 * [active][ready] *XXX....... 7/20
> 5:0:0:16386 sdk 8:160 *1 * [active][ready] *XXX....... 7/20
> 5:0:0:32770 sdl 8:176 *1 * [active][ready] *XXX....... 7/20
> 5:0:0:49154 sdm 8:192 *1 * [active][ready] *XXX....... 7/20
> 5:0:0:3 * * sdn 8:208 *1 * [active][ready] *XXX....... 7/20
> 5:0:0:16387 sdo 8:224 *1 * [active][ready] *XXX....... 7/20
> 5:0:0:32771 sdp 8:240 *1 * [active][ready] *XXX....... 7/20
> 5:0:0:49155 sdq 65:0 * 1 * [active][ready] *XXX....... 7/20
> 5:0:0:4 * * sdr 65:16 *1 * [active][ready] *XXX....... 7/20
> 5:0:0:16388 sds 65:32 *1 * [active][ready] *XXX....... 7/20
> 5:0:0:32772 sdt 65:48 *1 * [active][ready] *XXX....... 7/20
> 5:0:0:49156 sdu 65:64 *1 * [active][ready] *XXX....... 7/20
> 5:0:0:5 * * sdv 65:80 *0 * [undef] [faulty] [orphan]
> 5:0:0:16389 sdw 65:96 *0 * [undef] [faulty] [orphan]
> 5:0:0:32773 sdx 65:112 0 * [undef] [faulty] [orphan]
> 5:0:0:49157 sdy 65:128 0 * [undef] [faulty] [orphan]
> multipathd>
>
> Thanks in Adv
> Paras.
>
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