no_path_retry queue
Regards
Sunil Joshi
On 9/24/07, Nuno Fernandes
<npf-mlists@xxxxxxxxxxx> wrote:
Hi,
We've bought and IBM BladecenterH and IBM DS4700 storage.
We are using Redhat Enterprise Linux 5 and we are trying to put multipath
working.
RHEL5 we are using uses 2.6.18-8.1.3.el5xen. We've ported rdac patch
(http://kernel.org/pub/linux/kernel/people/agk/patches/2.6/2.6.21/dm-mpath-rdac.patch)
to RHEL5 kernel. We've also updated multipath-tools to support
mpath_prio_rdac.
Our multipath.conf is:
devnode_blacklist {
devnode "^(ram|raw|loop|fd|md|dm-|sr|scd|st)[0-9]*"
devnode "^hd[a-z]"
devnode "^cciss!c[0-9]d[0-9]*"
#USB 4G Flash drive inside HS21
devnode "sda"
}
defaults {
multipath_tool "/sbin/multipath -v0"
udev_dir /dev
polling_interval 5
default_selector "round-robin 0"
default_getuid_callout "/sbin/scsi_id -g -u -s /block/%n"
#default_prio_callout "/bin/true"
failback immediate
path_checker rdac
hardware_handler "1 rdac"
prio_callout "/sbin/mpath_prio_tpc /dev/%n"
path_grouping_policy group_by_prio
}
multipaths {
multipath {
wwid 3600a0b8000320bea0000048f46e52137
alias client_data
}
}
When we start multipath -v2 it creates multipath devices. I can see 2 active
paths (active controler) and 2 ghost paths (standby controler).
When i unplug 2 active fibre that connect the fabric to DS4700, multipath
reports I/O errors and doesn't failover the controler.
Any ideas?
Thanks for any help
Nuno Fernandes
--
dm-devel mailing list
dm-devel@xxxxxxxxxx
https://www.redhat.com/mailman/listinfo/dm-devel
-- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
