[linux-lvm] Re: alternate link / multi-pathing

[C'est Pierre]

Again, this time I am looking for some clues. I was trying to make a
test, so I created a logical volume called 'lv01', mounted it under a
directory and created a file on it, but somehow, when I am trying to
unmount it, the umount command stops responding and all I get is these
messages when I run dmesg:

multipath: sdb: redirecting sector 4480 to another IO path
multipath: only one IO path left and IO error.
multipath: sdb1: rescheduling sector 4489
multipath: sdb: redirecting sector 4480 to another IO path
multipath: only one IO path left and IO error.
multipath: sdb1: rescheduling sector 4489
multipath: sdb: redirecting sector 4480 to another IO path
multipath: only one IO path left and IO error.
multipath: sdb1: rescheduling sector 4489
multipath: sdb: redirecting sector 4480 to another IO path
multipath: only one IO path left and IO error.


Any hints? the load average is going pretty crazy too: load average:
7.22, 5.00, 2.24

Thanks,
Pierre


On 5/28/06, C'est Pierre <cestpierre at gmail.com> wrote:
> Hello,
>
> How can I setup multi-pathing so that I can create a vg with a
> physical device over two different fibre-channel links, so if one link
> fails, LVM uses the other?
>
> I am using the term alternate link but its origins are in hp-ux.
>
> If you could point me to some documentation on it, I would appreciate it!
>
> Thanks,
> Pierre
>