|
Yes, this could happen during the boot
where the scsi_dh_rdac handler is not yet loaded. You
might want to try adding scsi_dh_rdac in the initrd. This will Thanks Babu Moger From:
dm-devel-bounces@xxxxxxxxxx [mailto:dm-devel-bounces@xxxxxxxxxx] On Behalf Of Kurt Bechstein Greetings
everyone, I have a RHEL 5.3 host attached to two Dell MD3000i storage arrays
via iscsi. I’m having some interesting issues upon bootup in this
setup. Between the two arrays I’m accessing 24 luns so after my iscsi
service kicks in I get tons and tons of I/O error messages going across the
screen. This can go on for 15-20 minutes or longer. It would appear
that some I/O is being sent to the passive paths and they are returning
errors. It would seem the scsi layer is doing its thing to scan for partitions
and probably causing the I/O that is being seen. Is there any way to
suppress/avoid this scenario? Also, I thought I would post my
multipath.conf file just to have some other eyes have a look at it and make
sure I’m not missing something obvious so that is below. Thanks in
advance! devices
{
device {
vendor
"DELL"
product
"MD3000i"
features
"0"
getuid_callout
"/sbin/scsi_id -g -u -s /block/%n"
prio_callout
"/sbin/mpath_prio_rdac /dev/%n"
hardware_handler "1 rdac"
path_grouping_policy group_by_prio
failback
immediate
path_checker
rdac
prio
"rdac"
} } multipaths
{
mulitpath {
device {
vendor DELL
product MD3000i
}
} } |
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