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|---|---|---|---|
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hu_sles_12SP2.html |
host utilities, suse linux enterprise server 12 SP2, suse, linux, 12 SP2, netapp, ontap |
Describes how to use SUSE Linux Enterprise Server 12 SP2 with ONTAP |
You can use the ONTAP SAN host configuration settings to configure SUSE Linux Enterprise Server 12 SP2 with ONTAP as the target.
If you decide to use SAN booting, it must be supported by your configuration. You can use the NetApp Interoperability Matrix Tool to verify that your OS, HBA, HBA firmware and the HBA boot BIOS, and ONTAP version are supported.
For SUSE Linux Enterprise Server 12 SP2 the /etc/multipath.conf file must exist, but you do not need to make specific changes to the file. SUSE Linux Enterprise Server 12 SP2 is compiled with all settings required to recognize and correctly manage ONTAP LUNs.
# multipath -ll 3600a0980383034466b2b4a3775474859 dm-3 NETAPP,LUN C-Mode size=20G features='4 queue_if_no_path pg_init_retries 50 retain_attached_hw_handle' hwhandler='1 alua' wp=rw |-+- policy='round-robin 0' prio=50 status=active | |- 1:0:8:1 sdb 8:16 active ready running | `- 2:0:8:1 sdd 8:48 active ready running `-+- policy='round-robin 0' prio=10 status=enabled |- 1:0:9:1 sdc 8:32 active ready running `- 2:0:9:1 sde 8:64 active ready running
# multipath -ll 3600a09803831347657244e527766394e dm-5 NETAPP,LUN C-Mode size=80G features='4 queue_if_no_path pg_init_retries 50 retain_attached_hw_handle' hwhandler='1 alua' wp=rw |-+- policy='service-time 0' prio=50 status=active | |- 11:0:1:0 sdj 8:144 active ready running | |- 11:0:2:0 sdr 65:16 active ready running `-+- policy='service-time 0' prio=10 status=enabled |- 11:0:0:0 sdb 8:i6 active ready running |- 12:0:0:0 sdz 65:144 active ready running
SUSE Linux Enterprise Server 12 SP2 OS is compiled to recognize ONTAP LUNs and automatically set all configuration parameters correctly.
_include/hu/reuse_hu_recommended_settings.adoc
| Parameter | Setting |
|---|---|
detect_prio |
yes |
dev_loss_tmo |
"infinity" |
failback |
immediate |
fast_io_fail_tmo |
5 |
features |
"3 queue_if_no_path pg_init_retries 50" |
flush_on_last_del |
"yes" |
hardware_handler |
"0" |
path_checker |
"tur" |
path_grouping_policy |
"group_by_prio" |
path_selector |
"service-time 0" |
polling_interval |
5 |
prio |
"ontap" |
product |
LUN.* |
retain_attached_hw_handler |
yes |
rr_weight |
"uniform" |
user_friendly_names |
no |
vendor |
NETAPP |
The following example shows how to correct an overridden default. In this case, the multipath.conf file defines values for path_checker and detect_prio that are not compatible with ONTAP LUNs. If they cannot be removed because of other SAN arrays still attached to the host, these parameters can be corrected specifically for ONTAP LUNs with a device stanza.
defaults {
path_checker readsector0
detect_prio no
}
devices {
device {
vendor "NETAPP "
product "LUN.*"
path_checker tur
detect_prio yes
}
}