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將Linux iSCSI主機從MetroCluster 支援功能的FC移至MetroCluster 支援功能的IP節點

將支援節點從MetroCluster FC移轉至IP之後、您可能需要將iSCSI主機連線移至新節點。

在此程序中會建立IPV4介面。

這些程序中所提供的主機命令和範例、是專屬於Linux作業系統的。

設定新的iSCSI連線

若要移動iSCSI連線、您必須設定新的iSCSI連線至MetroCluster 整套IP節點。

  1. 在MetroCluster 支援的IP節點上建立iSCSI介面、並檢查從iSCSI用戶端到MetroCluster 支援的IP節點上新IP介面的ping連線能力。

    來自SVM的所有iSCSI介面均應可由iSCSI用戶端存取。

  2. 在iSCSI主機或用戶端上、識別從主機到MetroCluster SFC節點的現有iSCSI連線:「iscsiadm -m工作階段」

    [root@scspr1789621001 ~]# iscsiadm -m session
    
    tcp: [1] 10.230.68.236:3260,1156 iqn.1992-08.com.netapp:sn.58d7f6df2cc611eaa9c500a098a71638:vs.6 (non-flash)
    
    tcp: [2] 10.230.68.237:3260,1158 iqn.1992-08.com.netapp:sn.58d7f6df2cc611eaa9c500a098a71638:vs.6 (non-flash)
  3. 驗證MetroCluster 從「ISCSI工作階段show -vserver Svm-name」節點建立的連線

    node_A_1-IP::*> iscsi session show -vserver vsa_1
    
     Tpgroup Initiator Initiator
    
    Vserver Name TSIH Name ISID Alias
    --------- ------- ---- ------------------------ --------- ---------------------
    vsa_1 iscsi_lf__n1_p1_ 4 iqn.2020-01.com.netapp.englab.gdl:scspr1789621001 00:02:3d:00:00:01 scspr1789621001.gdl.englab.netapp.com
    vsa_1 iscsi_lf__n2_p1_ 4 iqn.2020-01.com.netapp.englab.gdl:scspr1789621001 00:02:3d:00:00:02 scspr1789621001.gdl.englab.netapp.com
    
    2 entries were displayed.
  4. 列出ONTAP SVM的iSCSI介面、其中包含「iSCSI介面show -vserver Svm-name」介面

    sti8200mcchtp001htp_siteA::*> iscsi interface show -vserver vsa_1
    
     Logical Status Curr Curr
    
    Vserver    Interface  TPGT Admin/Oper IP Address Node Port Enabled
    ---------- ---------- ---- ---------- --------------- ----------- ---- -------
    
    vsa_1 iscsi_lf__n1_p1_ 1156 up/up 10.230.68.236 sti8200mcc-htp-001 e0g true
    vsa_1 iscsi_lf__n1_p2_ 1157 up/up fd20:8b1e:b255:805e::78c9 sti8200mcc-htp-001 e0h true
    vsa_1 iscsi_lf__n2_p1_ 1158 up/up 10.230.68.237 sti8200mcc-htp-002 e0g true
    vsa_1 iscsi_lf__n2_p2_ 1159 up/up fd20:8b1e:b255:805e::78ca sti8200mcc-htp-002 e0h true
    vsa_1 iscsi_lf__n3_p1_ 1183 up/up 10.226.43.134 sti8200mccip-htp-005 e0c true
    vsa_1 iscsi_lf__n4_p1_ 1188 up/up 10.226.43.142 sti8200mccip-htp-006 e0c true
    
    6 entries were displayed.
  5. 在iSCSI用戶端上、在SVM上的任何一個iSCSI IP位址上執行探索、以探索新的目標:「iscsiadm -m dDiscovery -t sendtimes -p iscsi-ip-address'

    探索可在SVM的任何IP位址上執行、包括非iSCSI介面。

    [root@scspr1789621001 ~]# iscsiadm -m discovery -t sendtargets -p 10.230.68.236:3260
    
    10.230.68.236:3260,1156 iqn.1992-08.com.netapp:sn.58d7f6df2cc611eaa9c500a098a71638:vs.6
    10.226.43.142:3260,1188 iqn.1992-08.com.netapp:sn.58d7f6df2cc611eaa9c500a098a71638:vs.6
    10.226.43.134:3260,1183 iqn.1992-08.com.netapp:sn.58d7f6df2cc611eaa9c500a098a71638:vs.6
    10.230.68.237:3260,1158 iqn.1992-08.com.netapp:sn.58d7f6df2cc611eaa9c500a098a71638:vs.6
  6. 在iSCSI用戶端上、登入所有探索到的位址:「iscsiadm -m node-L all -T node-address -p Portal-address -l」

    [root@scspr1789621001 ~]# iscsiadm -m node -L all -T iqn.1992-08.com.netapp:sn.58d7f6df2cc611eaa9c500a098a71638:vs.6 -p 10.230.68.236:3260 -l
    
    Logging in to [iface: default, target: iqn.1992-08.com.netapp:sn.58d7f6df2cc611eaa9c500a098a71638:vs.6, portal: 10.226.43.142,3260] (multiple)
    Logging in to [iface: default, target: iqn.1992-08.com.netapp:sn.58d7f6df2cc611eaa9c500a098a71638:vs.6, portal: 10.226.43.134,3260] (multiple)
    Login to [iface: default, target: iqn.1992-08.com.netapp:sn.58d7f6df2cc611eaa9c500a098a71638:vs.6, portal: 10.226.43.142,3260] successful.
    Login to [iface: default, target: iqn.1992-08.com.netapp:sn.58d7f6df2cc611eaa9c500a098a71638:vs.6, portal: 10.226.43.134,3260] successful.
  7. 在iSCSI用戶端上、驗證登入和連線:「iscsiadm -m工作階段」

    [root@scspr1789621001 ~]# iscsiadm -m session
    
    tcp: [1] 10.230.68.236:3260,1156 iqn.1992-08.com.netapp:sn.58d7f6df2cc611eaa9c500a098a71638:vs.6 (non-flash)
    tcp: [2] 10.230.68.237:3260,1158 iqn.1992-08.com.netapp:sn.58d7f6df2cc611eaa9c500a098a71638:vs.6 (non-flash)
    tcp: [3] 10.226.43.142:3260,1188 iqn.1992-08.com.netapp:sn.58d7f6df2cc611eaa9c500a098a71638:vs.6 (non-flash)
  8. 從「支援節點」中、確認登入及與用戶端的連線:「iSCSI啟動器show -vserver VSA_1」(iSCSI啟動器show -vserver VSA_1)MetroCluster

    sti8200mcchtp001htp_siteA::*> iscsi initiator show -vserver vsa_1
    
     Tpgroup Initiator
    
    Vserver Name             TSIH Name                  ISID              Igroup Name
    ------- --------         ---- --------------------- ----------------- -----------------
    vsa_1 iscsi_lf__n1_p1_ 4 iqn.2020-01.com.netapp.englab.gdl:scspr1789621001 00:02:3d:00:00:01 igroup_linux
    vsa_1 iscsi_lf__n2_p1_ 4 iqn.2020-01.com.netapp.englab.gdl:scspr1789621001 00:02:3d:00:00:02 igroup_linux
    vsa_1 iscsi_lf__n3_p1_ 1 iqn.2020-01.com.netapp.englab.gdl:scspr1789621001 00:02:3d:00:00:04 igroup_linux
    vsa_1 iscsi_lf__n4_p1_ 1 iqn.2020-01.com.netapp.englab.gdl:scspr1789621001 00:02:3d:00:00:03 igroup_linux
    
    4 entries were displayed.

在此工作結束時、用戶端可以看到所有iSCSI介面(MetroCluster 在靜態FC和MetroCluster 靜態IP節點上)、並登入所有這些介面。

LUN和磁碟區仍實體裝載於FC節點上。由於LUN只會在MetroCluster 不含資源的FC節點介面上報告、因此用戶端只會顯示MetroCluster 在不含資源的FC節點上的路徑。這可在sanlun LUN show -p和多重路徑-ll -d命令輸出中看到。下一步是將IP節點新增為報告節點。

[root@scspr1789621001 ~]# sanlun lun show -p
ONTAP Path: vsa_1:/vol/vsa_1_vol6/lun_linux_12
 LUN: 4
 LUN Size: 2g
 Product: cDOT
 Host Device: 3600a098038304646513f4f674e52774b
 Multipath Policy: service-time 0
 Multipath Provider: Native
--------- ---------- ------- ------------ ----------------------------------------------
host vserver
path path /dev/ host vserver
state     type       node     adapter     LIF
--------- ---------- ------- ------------ ----------------------------------------------
up        primary    sdk     host3        iscsi_lf__n2_p1_
up        secondary  sdh     host2        iscsi_lf__n1_p1_

[root@scspr1789621001 ~]# multipath -ll -d
3600a098038304646513f4f674e52774b dm-5 NETAPP ,LUN C-Mode
size=2.0G 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
| `- 3:0:0:4 sdk 8:160 active ready running
`-+- policy='service-time 0' prio=10 status=enabled
 `- 2:0:0:4 sdh 8:112 active ready running

將MetroCluster 靜態IP節點新增為報告節點

在設定新MetroCluster 的連接到新的「靜態IP」節點之後、您必須新增報告節點。

  1. 在支援節點上MetroCluster 、列出SVM上LUN的報告節點:「LUN對應show -vserver VSA_1 -Fields reporting_nodes -osttype Linux」

    下列報告節點是本機節點、因為LUN實體位於FC節點node_a_1-FC和node_a_2-FC上。

    node_A_1-IP::*> lun mapping show -vserver vsa_1 -fields reporting-nodes -ostype linux
    
    vserver path igroup reporting-nodes
    ------- --------------------------- ------------ -------------------------------------
    vsa_1 /vol/vsa_1_vol1/lun_linux_2 igroup_linux node_A_1-FC,node_A_2-FC
    .
    .
    .
    vsa_1 /vol/vsa_1_vol9/lun_linux_19 igroup_linux node_A_1-FC,node_A_2-FC
    12 entries were displayed.
  2. 在支援節點上MetroCluster 、新增報告節點:「LUN對應附加報告節點-vserver Svm-name -path /vol/VSA_1_vol*/LUN_Linux/*節點node1、node2 -igroup igroup_Linux」

    node_A_1-IP::*> lun mapping add-reporting-nodes -vserver vsa_1 -path /vol/vsa_1_vol*/lun_linux_* -nodes node_A_1-IP,node_A_2-IP
    -igroup igroup_linux
    
    12 entries were acted on.
  3. 在這個節點上、請確認新增的節點是否存在:「LUN對應show -vserver Svm-name -Fields reports-nodes -osttype Linux vserver path igroup reports-nodes」MetroCluster

    node_A_1-IP::*> lun mapping show -vserver vsa_1 -fields reporting-nodes -ostype linux vserver path igroup reporting-nodes
    ------- --------------------------- ------------ -------------------------------------------------------------------------------
    
    vsa_1 /vol/vsa_1_vol1/lun_linux_2 igroup_linux node_A_1-FC,node_A_2-FC,node_A_1-IP,node_A_2-IP
    vsa_1 /vol/vsa_1_vol1/lun_linux_3 igroup_linux node_A_1-FC,node_A_2-FC,node_A_1-IP,node_A_2-IP.
    .
    .
    .
    
    12 entries were displayed.
  4. 在主機上、發出下列命令以重新掃描主機上的SCSI匯流排、並探索新增的路徑:()rescan-scsi-bus.sh

    [root@stemgr]# /usr/bin/rescan-scsi-bus.sh -a
    Scanning SCSI subsystem for new devices
    Scanning host 0 for SCSI target IDs 0 1 2 3 4 5 6 7, all LUNs
    Scanning host 1 for SCSI target IDs 0 1 2 3 4 5 6 7, all LUNs
    Scanning host 2 for SCSI target IDs 0 1 2 3 4 5 6 7, all LUNs
     Scanning for device 2 0 0 0 ...
    .
    .
    .
    OLD: Host: scsi5 Channel: 00 Id: 00 Lun: 09
     Vendor: NETAPP Model: LUN C-Mode Rev: 9800
     Type: Direct-Access ANSI SCSI revision: 05
    0 new or changed device(s) found.
    0 remapped or resized device(s) found.
    0 device(s) removed.
  5. 在主機上、發出下列命令以列出新增的路徑:「anlun LUN show -p」

    每個LUN顯示四個路徑。

    [root@stemgr]# sanlun lun show -p
    ONTAP Path: vsa_1:/vol/vsa_1_vol6/lun_linux_12
     LUN: 4
     LUN Size: 2g
     Product: cDOT
     Host Device: 3600a098038304646513f4f674e52774b
     Multipath Policy: service-time 0
     Multipath Provider: Native
    --------- ---------- ------- ------------ ----------------------------------------------
    host vserver
    path path /dev/ host vserver
    state type node adapter LIF
    --------- ---------- ------- ------------ ----------------------------------------------
    up primary sdk host3 iscsi_lf__n2_p1_
    up secondary sdh host2 iscsi_lf__n1_p1_
    up secondary sdag host4 iscsi_lf__n4_p1_
    up secondary sdah host5 iscsi_lf__n3_p1_
  6. 在這個功能區上、將包含LUN的磁碟區/磁碟區從FC移至IP節點。MetroCluster

    node_A_1-IP::*> vol move start -vserver vsa_1 -volume vsa_1_vol1 -destination-aggregate sti8200mccip_htp_005_aggr1
    [Job 1877] Job is queued: Move "vsa_1_vol1" in Vserver "vsa_1" to aggregate "sti8200mccip_htp_005_aggr1". Use the "volume move show -vserver
    vsa_1 -volume vsa_1_vol1" command to view the status of this operation.
    node_A_1-IP::*> vol move show
    Vserver    Volume     State       Move       Phase            Percent-Complete  Time-To-Complete
    ---------  ---------- --------    ---------- ---------------- ----------------  ----------------
    vsa_1     vsa_1_vol1  healthy                initializing     -                 -
  7. 完成Volume搬移後、MetroCluster 請使用volume show命令確認Volume或LUN已上線。

  8. 目前LUN所在的站台上的iSCSI介面MetroCluster 會更新為主要路徑。如果主路徑在磁碟區移動後未更新、請執行/usr/bin/rescan-scsi-bus.sh -A和多重路徑-v3、或只是等待重新執行多重路徑。

    在下列範例中、主要路徑是MetroCluster 指在SIP節點上的LIF。

    [root@stemgr]# sanlun lun show -p
    ONTAP Path: vsa_1:/vol/vsa_1_vol6/lun_linux_12
     LUN: 4
     LUN Size: 2g
     Product: cDOT
     Host Device: 3600a098038304646513f4f674e52774b
     Multipath Policy: service-time 0
     Multipath Provider: Native
    --------- ---------- ------- ------------ -----------------------
    host vserver
    path path /dev/ host vserver
    state     type       node    adapter      LIF
    --------- ---------- ------- ------------ ------------------------
    up        primary    sdag    host4        iscsi_lf__n4_p1_
    up        secondary  sdk     host3        iscsi_lf__n2_p1_
    up        secondary  sdh     host2        iscsi_lf__n1_p1_
    up        secondary  sdah    host5        iscsi_lf__n3_p1_

移除報告節點並重新掃描路徑

您必須移除報告節點、然後重新掃描路徑。

  1. 從「支援IP」節點移除Linux LUN的遠端報告節點(「支援IP節點」):「LUN對應移除報告節點-vserver VSA_1 -path *-igroup igroup_Linux -reme-nodes true」MetroCluster MetroCluster

    在此情況下、遠端節點是FC節點。

    node_A_1-IP::*> lun mapping remove-reporting-nodes -vserver vsa_1 -path * -igroup igroup_linux -remote-nodes true
    
    12 entries were acted on.
  2. 從「支援IP」節點、檢查LUN的報告節點:「LUN對應show -vserver VSA_1 -Fields reporting_nodes -osttype Linux」MetroCluster

    node_A_1-IP::*> lun mapping show -vserver vsa_1 -fields reporting-nodes -ostype linux
    
    vserver  path                        igroup      reporting-nodes
    ------- --------------------------- ------------ -----------------------------------------
    
    vsa_1 /vol/vsa_1_vol1/lun_linux_2   igroup_linux  node_A_1-IP,node_A_2-IP
    vsa_1 /vol/vsa_1_vol1/lun_linux_3   igroup_linux  node_A_1-IP,node_A_2-IP
    vsa_1 /vol/vsa_1_vol2/lun_linux_4   group_linux   node_A_1-IP,node_A_2-IP
    .
    .
    .
    
    12 entries were displayed.
  3. 在iSCSI主機上、重新掃描SCSI匯流排:「/r/bin/rescan-scsi-bus.sh -r'

    移除的路徑是FC節點的路徑。

    [root@scspr1789621001 ~]# /usr/bin/rescan-scsi-bus.sh -r
    Syncing file systems
    Scanning SCSI subsystem for new devices and remove devices that have disappeared
    Scanning host 0 for SCSI target IDs 0 1 2 3 4 5 6 7, all LUNs
    Scanning host 1 for SCSI target IDs 0 1 2 3 4 5 6 7, all LUNs
    Scanning host 2 for SCSI target IDs 0 1 2 3 4 5 6 7, all LUNs
    sg0 changed: LU not available (PQual 1)
    REM: Host: scsi2 Channel: 00 Id: 00 Lun: 00
    DEL: Vendor: NETAPP Model: LUN C-Mode Rev: 9800
     Type: Direct-Access ANSI SCSI revision: 05
    sg2 changed: LU not available (PQual 1)
    .
    .
    .
    OLD: Host: scsi5 Channel: 00 Id: 00 Lun: 09
     Vendor: NETAPP Model: LUN C-Mode Rev: 9800
     Type: Direct-Access ANSI SCSI revision: 05
    0 new or changed device(s) found.
    0 remapped or resized device(s) found.
    24 device(s) removed.
     [2:0:0:0]
     [2:0:0:1]
     .
    .
    .
  4. 在iSCSI主機上、確認只MetroCluster 能看到來自於該支援中心IP節點的路徑:「anlun LUN show -p’multippath -ll -d'