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Configurazione dell'host

08/01/2025 Collaboratori

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Prima di configurare l'host, è necessario scaricare le utility host NETAPP SAN da "Supporto NetApp" E installato sui server HANA. La documentazione dell'utility host include informazioni sul software aggiuntivo che deve essere installato in base all'HBA FCP utilizzato.

La documentazione contiene anche informazioni sulle configurazioni multipath specifiche per la versione di Linux utilizzata. Questo documento illustra le procedure di configurazione richieste per SLES 12 SP1 o versione successiva e RHEL 7. 2 o successiva, come descritto nella "Guida all'installazione e all'installazione di Linux host Utilities 7.1".

Configurare il multipathing

I passaggi da 1 a 6 devono essere eseguiti su tutti gli host worker e standby in una configurazione multi-host SAP HANA.

Per configurare il multipathing, attenersi alla seguente procedura:

Eseguire Linux rescan-scsi-bus.sh -a Su ciascun server per rilevare nuove LUN.

Esegui il sanlun lun show comando e verificare che tutti i LUN richiesti siano visibili. L'esempio seguente mostra il sanlun lun show Output del comando per un sistema HANA multi-host 2+1 con due LUN di dati e due LUN di log. L'output mostra le LUN e i file di dispositivo corrispondenti, come LUN FC5_data_mnt00001 e il file del dispositivo /dev/sdag Ogni LUN ha otto percorsi FC dall'host ai controller di archiviazione.

sapcc-hana-tst:~ # sanlun lun show
controller(7mode/E-Series)/                                  device          host                  lun
vserver(cDOT/FlashRay)        lun-pathname                   filename        adapter    protocol   size    product
---------------------------------------------------------------------------------------------------------------
svm1                          FC5_log_mnt00002_2             /dev/sdbb       host21     FCP        500g    cDOT
svm1                          FC5_log_mnt00002_1             /dev/sdba       host21     FCP        500g    cDOT
svm1                          FC5_log_mnt00001_2             /dev/sdaz       host21     FCP        500g    cDOT
svm1                          FC5_log_mnt00001_1             /dev/sday       host21     FCP        500g    cDOT
svm1                          FC5_data_mnt00002_2            /dev/sdax       host21     FCP        1t      cDOT
svm1                          FC5_data_mnt00002_1            /dev/sdaw       host21     FCP        1t      cDOT
svm1                          FC5_data_mnt00001_2            /dev/sdav       host21     FCP        1t      cDOT
svm1                          FC5_data_mnt00001_1            /dev/sdau       host21     FCP        1t      cDOT
svm1                          FC5_log_mnt00002_2             /dev/sdat       host21     FCP        500g    cDOT
svm1                          FC5_log_mnt00002_1             /dev/sdas       host21     FCP        500g    cDOT
svm1                          FC5_log_mnt00001_2             /dev/sdar       host21     FCP        500g    cDOT
svm1                          FC5_log_mnt00001_1             /dev/sdaq       host21     FCP        500g    cDOT
svm1                          FC5_data_mnt00002_2            /dev/sdap       host21     FCP        1t      cDOT
svm1                          FC5_data_mnt00002_1            /dev/sdao       host21     FCP        1t      cDOT
svm1                          FC5_data_mnt00001_2            /dev/sdan       host21     FCP        1t      cDOT
svm1                          FC5_data_mnt00001_1            /dev/sdam       host21     FCP        1t      cDOT
svm1                          FC5_log_mnt00002_2             /dev/sdal       host20     FCP        500g    cDOT
svm1                          FC5_log_mnt00002_1             /dev/sdak       host20     FCP        500g    cDOT
svm1                          FC5_log_mnt00001_2             /dev/sdaj       host20     FCP        500g    cDOT
svm1                          FC5_log_mnt00001_1             /dev/sdai       host20     FCP        500g    cDOT
svm1                          FC5_data_mnt00002_2            /dev/sdah       host20     FCP        1t      cDOT
svm1                          FC5_data_mnt00002_1            /dev/sdag       host20     FCP        1t      cDOT
svm1                          FC5_data_mnt00001_2            /dev/sdaf       host20     FCP        1t      cDOT
svm1                          FC5_data_mnt00001_1            /dev/sdae       host20     FCP        1t      cDOT
svm1                          FC5_log_mnt00002_2             /dev/sdad       host20     FCP        500g    cDOT
svm1                          FC5_log_mnt00002_1             /dev/sdac       host20     FCP        500g    cDOT
svm1                          FC5_log_mnt00001_2             /dev/sdab       host20     FCP        500g    cDOT
svm1                          FC5_log_mnt00001_1             /dev/sdaa       host20     FCP        500g    cDOT
svm1                          FC5_data_mnt00002_2            /dev/sdz        host20     FCP        1t      cDOT
svm1                          FC5_data_mnt00002_1            /dev/sdy        host20     FCP        1t      cDOT
svm1                          FC5_data_mnt00001_2            /dev/sdx        host20     FCP        1t      cDOT
svm1                          FC5_data_mnt00001_1            /dev/sdw        host20     FCP        1t      cDOT

Esegui il multipath -r E multipath -ll comando per ottenere gli identificatori mondiali (WWID) per i nomi dei file del dispositivo.

In questo esempio ci sono otto LUN.

sapcc-hana-tst:~ # multipath -r
sapcc-hana-tst:~ # multipath -ll
3600a098038314e63492b59326b4b786d dm-7 NETAPP,LUN C-Mode
size=1.0T features='3 queue_if_no_path pg_init_retries 50' hwhandler='1 alua' wp=rw
`-+- policy='service-time 0' prio=50 status=active
  |- 20:0:4:2 sdaf 65:240 active ready running
  |- 20:0:5:2 sdx  65:112 active ready running
  |- 21:0:4:2 sdav 66:240 active ready running
  `- 21:0:6:2 sdan 66:112 active ready running
3600a098038314e63492b59326b4b786e dm-9 NETAPP,LUN C-Mode
size=1.0T features='3 queue_if_no_path pg_init_retries 50' hwhandler='1 alua' wp=rw
`-+- policy='service-time 0' prio=50 status=active
  |- 20:0:4:4 sdah 66:16  active ready running
  |- 20:0:5:4 sdz  65:144 active ready running
  |- 21:0:4:4 sdax 67:16  active ready running
  `- 21:0:6:4 sdap 66:144 active ready running
3600a098038314e63492b59326b4b786f dm-11 NETAPP,LUN C-Mode
size=500G features='3 queue_if_no_path pg_init_retries 50' hwhandler='1 alua' wp=rw
`-+- policy='service-time 0' prio=50 status=active
  |- 20:0:4:6 sdaj 66:48  active ready running
  |- 20:0:5:6 sdab 65:176 active ready running
  |- 21:0:4:6 sdaz 67:48  active ready running
  `- 21:0:6:6 sdar 66:176 active ready running
3600a098038314e63492b59326b4b7870 dm-13 NETAPP,LUN C-Mode
size=500G features='3 queue_if_no_path pg_init_retries 50' hwhandler='1 alua' wp=rw
`-+- policy='service-time 0' prio=50 status=active
  |- 20:0:4:8 sdal 66:80  active ready running
  |- 20:0:5:8 sdad 65:208 active ready running
  |- 21:0:4:8 sdbb 67:80  active ready running
  `- 21:0:6:8 sdat 66:208 active ready running
3600a098038314e63532459326d495a64 dm-6 NETAPP,LUN C-Mode
size=1.0T features='3 queue_if_no_path pg_init_retries 50' hwhandler='1 alua' wp=rw
`-+- policy='service-time 0' prio=50 status=active
  |- 20:0:4:1 sdae 65:224 active ready running
  |- 20:0:5:1 sdw  65:96  active ready running
  |- 21:0:4:1 sdau 66:224 active ready running
  `- 21:0:6:1 sdam 66:96  active ready running
3600a098038314e63532459326d495a65 dm-8 NETAPP,LUN C-Mode
size=1.0T features='3 queue_if_no_path pg_init_retries 50' hwhandler='1 alua' wp=rw
`-+- policy='service-time 0' prio=50 status=active
  |- 20:0:4:3 sdag 66:0   active ready running
  |- 20:0:5:3 sdy  65:128 active ready running
  |- 21:0:4:3 sdaw 67:0   active ready running
  `- 21:0:6:3 sdao 66:128 active ready running
3600a098038314e63532459326d495a66 dm-10 NETAPP,LUN C-Mode
size=500G features='3 queue_if_no_path pg_init_retries 50' hwhandler='1 alua' wp=rw
`-+- policy='service-time 0' prio=50 status=active
  |- 20:0:4:5 sdai 66:32  active ready running
  |- 20:0:5:5 sdaa 65:160 active ready running
  |- 21:0:4:5 sday 67:32  active ready running
  `- 21:0:6:5 sdaq 66:160 active ready running
3600a098038314e63532459326d495a67 dm-12 NETAPP,LUN C-Mode
size=500G features='3 queue_if_no_path pg_init_retries 50' hwhandler='1 alua' wp=rw
`-+- policy='service-time 0' prio=50 status=active
  |- 20:0:4:7 sdak 66:64  active ready running
  |- 20:0:5:7 sdac 65:192 active ready running
  |- 21:0:4:7 sdba 67:64  active ready running
  `- 21:0:6:7 sdas 66:192 active ready running

Modificare il /etc/multipath.conf File e aggiungere i WWID e i nomi degli alias.

L'output di esempio mostra il contenuto di /etc/multipath.conf File, che include nomi alias per le quattro LUN di un sistema a più host 2+1. Se non è disponibile alcun file multipath.conf, è possibile crearne uno eseguendo il seguente comando: multipath -T > /etc/multipath.conf.

sapcc-hana-tst:/ # cat /etc/multipath.conf
multipaths {
                multipath {
                wwid    3600a098038314e63492b59326b4b786d
                alias   svm1-FC5_data_mnt00001_2
        }
        multipath {
                wwid    3600a098038314e63492b59326b4b786e
                alias   svm1-FC5_data_mnt00002_2
        }
        multipath {
                wwid    3600a098038314e63532459326d495a64
                alias   svm1-FC5_data_mnt00001_1
        }
        multipath {
                wwid    3600a098038314e63532459326d495a65
                alias   svm1-FC5_data_mnt00002_1
        }
        multipath {
                wwid    3600a098038314e63492b59326b4b786f
                alias   svm1-FC5_log_mnt00001_2
        }
        multipath {
                wwid    3600a098038314e63492b59326b4b7870
                alias   svm1-FC5_log_mnt00002_2
        }
        multipath {
                wwid    3600a098038314e63532459326d495a66
                alias   svm1-FC5_log_mnt00001_1
        }
        multipath {
                wwid    3600a098038314e63532459326d495a67
                alias   svm1-FC5_log_mnt00002_1
        }


}

Eseguire multipath -r comando per ricaricare la mappa del dispositivo.

Verificare la configurazione eseguendo multipath -ll Per elencare tutti i LUN, i nomi degli alias e i percorsi attivi e di standby.

Il seguente esempio di output mostra l'output di un sistema HANA 2+1 multihost con due LUN di dati e due di log.

sapcc-hana-tst:~ # multipath -ll
svm1-FC5_data_mnt00001_2 (3600a098038314e63492b59326b4b786d) dm-7 NETAPP,LUN C-Mode
size=1.0T features='3 queue_if_no_path pg_init_retries 50' hwhandler='1 alua' wp=rw
`-+- policy='service-time 0' prio=50 status=active
  |- 20:0:4:2 sdaf 65:240 active ready running
  |- 20:0:5:2 sdx  65:112 active ready running
  |- 21:0:4:2 sdav 66:240 active ready running
  `- 21:0:6:2 sdan 66:112 active ready running
svm1-FC5_data_mnt00002_2 (3600a098038314e63492b59326b4b786e) dm-9 NETAPP,LUN C-Mode
size=1.0T features='3 queue_if_no_path pg_init_retries 50' hwhandler='1 alua' wp=rw
`-+- policy='service-time 0' prio=50 status=active
  |- 20:0:4:4 sdah 66:16  active ready running
  |- 20:0:5:4 sdz  65:144 active ready running
  |- 21:0:4:4 sdax 67:16  active ready running
  `- 21:0:6:4 sdap 66:144 active ready running
svm1-FC5_data_mnt00001_1 (3600a098038314e63532459326d495a64) dm-6 NETAPP,LUN C-Mode
size=1.0T features='3 queue_if_no_path pg_init_retries 50' hwhandler='1 alua' wp=rw
`-+- policy='service-time 0' prio=50 status=active
  |- 20:0:4:1 sdae 65:224 active ready running
  |- 20:0:5:1 sdw  65:96  active ready running
  |- 21:0:4:1 sdau 66:224 active ready running
  `- 21:0:6:1 sdam 66:96  active ready running
svm1-FC5_data_mnt00002_1 (3600a098038314e63532459326d495a65) dm-8 NETAPP,LUN C-Mode
size=1.0T features='3 queue_if_no_path pg_init_retries 50' hwhandler='1 alua' wp=rw
`-+- policy='service-time 0' prio=50 status=active
  |- 20:0:4:3 sdag 66:0   active ready running
  |- 20:0:5:3 sdy  65:128 active ready running
  |- 21:0:4:3 sdaw 67:0   active ready running
  `- 21:0:6:3 sdao 66:128 active ready running
svm1-FC5_log_mnt00001_2 (3600a098038314e63492b59326b4b786f) dm-11 NETAPP,LUN C-Mode
size=500G features='3 queue_if_no_path pg_init_retries 50' hwhandler='1 alua' wp=rw
`-+- policy='service-time 0' prio=50 status=active
  |- 20:0:4:6 sdaj 66:48  active ready running
  |- 20:0:5:6 sdab 65:176 active ready running
  |- 21:0:4:6 sdaz 67:48  active ready running
  `- 21:0:6:6 sdar 66:176 active ready running
svm1-FC5_log_mnt00002_2 (3600a098038314e63492b59326b4b7870) dm-13 NETAPP,LUN C-Mode
size=500G features='3 queue_if_no_path pg_init_retries 50' hwhandler='1 alua' wp=rw
`-+- policy='service-time 0' prio=50 status=active
  |- 20:0:4:8 sdal 66:80  active ready running
  |- 20:0:5:8 sdad 65:208 active ready running
  |- 21:0:4:8 sdbb 67:80  active ready running
  `- 21:0:6:8 sdat 66:208 active ready running
svm1-FC5_log_mnt00001_1 (3600a098038314e63532459326d495a66) dm-10 NETAPP,LUN C-Mode
size=500G features='3 queue_if_no_path pg_init_retries 50' hwhandler='1 alua' wp=rw
`-+- policy='service-time 0' prio=50 status=active
  |- 20:0:4:5 sdai 66:32  active ready running
  |- 20:0:5:5 sdaa 65:160 active ready running
  |- 21:0:4:5 sday 67:32  active ready running
  `- 21:0:6:5 sdaq 66:160 active ready running
svm1-FC5_log_mnt00002_1 (3600a098038314e63532459326d495a67) dm-12 NETAPP,LUN C-Mode
size=500G features='3 queue_if_no_path pg_init_retries 50' hwhandler='1 alua' wp=rw
`-+- policy='service-time 0' prio=50 status=active
  |- 20:0:4:7 sdak 66:64  active ready running
  |- 20:0:5:7 sdac 65:192 active ready running
  |- 21:0:4:7 sdba 67:64  active ready running
  `- 21:0:6:7 sdas 66:192 active ready running

Configurazione dell'host

Creating your file...

Configurare il multipathing