On Sun, Jul 17, 2016 at 5:48 PM, Momonth momonth@gmail.com wrote:
Hi,
Please see inline.
On Wed, Jul 13, 2016 at 2:24 PM, Natxo Asenjo natxo.asenjo@gmail.com wrote:
So I need to configure multipathd.
I have this /etc/multipath.conf
defaults { user_friendly_names yes }
I suggest you consult NetApp's documentation for "host utilities", it has specific per OS release setting recommendations, IMO, " user_friendly_names no" is recommended.
ok, thanks, will do.
# multipath -ll netapp_oracle_datafile (3600a098038303370562b4946426b6743) dm-3
NETAPP,LUN
C-Mode size=350G features='1 queue_if_no_path' hwhandler='0' wp=rw |-+- policy='round-robin 0' prio=4 status=active | |- 6:0:0:1 sdg 8:96 active ready running | `- 3:0:0:1 sdf 8:80 active ready running `-+- policy='round-robin 0' prio=1 status=enabled |- 4:0:0:1 sdj 8:144 active ready running `- 5:0:0:1 sdk 8:160 active ready running netapp_oracle_recovery (3600a098038303370562b4946426b6742) dm-2
NETAPP,LUN
C-Mode size=300G features='1 queue_if_no_path' hwhandler='0' wp=rw |-+- policy='round-robin 0' prio=4 status=active | |- 3:0:0:0 sdd 8:48 active ready running | `- 6:0:0:0 sde 8:64 active ready running `-+- policy='round-robin 0' prio=1 status=enabled |- 5:0:0:0 sdh 8:112 active ready running `- 4:0:0:0 sdi 8:128 active ready running
It looks OK .. but if you can provide me with output from "lsblk", then I can tell you more about it.
unfortunately this OS (oracle linux 5.6) does not have this command
It's important that multipathd kernel module + proper multipath.conf are properly installed into initrd file aka RAM disk. Otherwise the output above can be different after OS reboots.
aha, will take a look at that as well.
Is this ok? What do I have to use in /etc/fstab? /dev/mapper/netapp_oracle_datafile en
/dev/mapper/netapp_oracle_recovery? Or
am I doing something terribly wrong. I called with support but as this
is no
break or fix stuff, they recommend calling professional services ...
NetApp support rocks, right ? =)
mostly yes I must say, but this time this list rocks ;-)
Are you planning to employ Linux LVM on top of your multipath device? If yes, then you need to add those to /etc/fstab.
The best you could do is the following: once you think you've done everything correctly SAN wise, prior going "production" with it, do extensive testing, including target (filer) and initiator (your server) reboots. It will either reveil issues or you are going to see how awesome it is to have redundancy in place =)
Thanks for the tips!