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linux:multipath [2016/09/02 11:05] vondra [Vzorova konfigurace] |
linux:multipath [2017/03/13 17:24] (current) tomsa [Manual failover] |
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</code> | </code> | ||
+ | * nacteme konfiguraci:<code> | ||
+ | multipath -v2 | ||
+ | create: mach3 (2317936357870636c) undef SCST_FIO,raid-disk | ||
+ | size=9.1T features='0' hwhandler='0' wp=undef | ||
+ | |-+- policy='service-time 0' prio=1 status=undef | ||
+ | | `- 1:0:2:1 sdh 8:112 undef ready running | ||
+ | `-+- policy='service-time 0' prio=1 status=undef | ||
+ | `- 15:0:0:1 sdj 8:144 undef ready running | ||
+ | </code> | ||
+ | * overime, ze multipath funguje:<code> | ||
+ | multipath -ll | ||
+ | backup (26261353635663533) dm-0 SCST_FIO,raid-disk | ||
+ | size=11T features='0' hwhandler='0' wp=rw | ||
+ | |-+- policy='service-time 0' prio=1 status=active | ||
+ | | `- 1:0:1:1 sddf 70:208 active ready running | ||
+ | `-+- policy='service-time 0' prio=1 status=enabled | ||
+ | `- 14:0:0:1 sdm 8:192 active ready running | ||
+ | mach3 (2317936357870636c) dm-80 SCST_FIO,raid-disk | ||
+ | size=9.1T features='0' hwhandler='0' wp=rw | ||
+ | |-+- policy='service-time 0' prio=1 status=active | ||
+ | | `- 1:0:2:1 sdh 8:112 active ready running | ||
+ | `-+- policy='service-time 0' prio=1 status=enabled | ||
+ | `- 15:0:0:1 sdj 8:144 active ready running</code> | ||
+ | * vzniklo nam zarizeni /dev/mapper/mach3, ktere pouzivame stejne jako jakekoli jine blokove zarizeni | ||
+ | |||
+ | ====Manual failover==== | ||
+ | 1) vyradit jednu z cest | ||
+ | <code bash> | ||
+ | echo offline > /sys/block/ [device name] /device/state | ||
+ | </code> | ||
+ | 2) cestu vratit zpet | ||
+ | <code bash> | ||
+ | echo running > /sys/block/ [device name] /device/state | ||
+ | </code> | ||
+ | |||
+ | Je to vhodne udelat po automatickem failover v pripade, ze se prepne cesta z fc na iscsi. Je nastaveno nevracet se zpet, takze zabitim aktivniho ISCSI donutime multipath zase zacit pouzivat FC | ||
+ |
linux/multipath.1472807108.txt.gz · Last modified: 2016/09/02 11:05 by vondra