将 FC SAN 工作负载从 MetroCluster FC 移动到 MetroCluster IP 节点
提供者
在从 MetroCluster FC 无中断过渡到 IP 节点时,您必须无中断地将 FC SAN 主机对象从 MetroCluster FC 移动到 IP 节点。
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在 MetroCluster IP 节点上设置新的 FC 接口( LIF ):
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如果需要,请在 MetroCluster IP 节点上修改 FC 端口,以便客户端连接到 FC 目标特性。
这可能需要重新启动节点。
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在IP节点上为所有SAN SVM创建FC IF/接口。(可选)验证新创建的FC SIFs中的WWPN是否已登录到FC SAN交换机
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更新 MetroCluster IP 节点上新添加的 FC LIF 的 SAN 分区配置。
为了便于移动包含主动为 FC SAN 客户端提供数据的 LUN 的卷,请更新现有 FC 交换机分区,以允许 FC SAN 客户端访问 MetroCluster IP 节点上的 LUN 。
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在 FC SAN 交换机( Cisco 或 Brocade )上,将新添加的 FC SAN LIF 的 WWPN 添加到分区中。
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更新,保存并提交分区更改。
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在客户端中,检查 FC 启动程序是否登录到 MetroCluster IP 节点上的新 SAN LIF :
sanlun lun show -p
此时,客户端应看到并登录到 MetroCluster FC 和 MetroCluster IP 节点上的 FC 接口。LUN 和卷仍以物理方式托管在 MetroCluster FC 节点上。
由于 LUN 仅在 MetroCluster FC 节点接口上报告,因此客户端仅显示 FC 节点上的路径。可从的输出中看到此问题
sanlun lun show -p
和multipath -ll -d
命令
[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_ [root@stemgr]# 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
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修改报告节点以添加 MetroCluster IP 节点
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列出 SVM 上 LUN 的报告节点:
lun mapping show -vserver svm-name -fields reporting-nodes -ostype linux
显示的报告节点是本地节点,因为 LUN 实际位于 FC 节点 A_1 和 A_2 上。
cluster_A::> 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 A_1,A_2 vsa_1 /vol/vsa_1_vol1/lun_linux_3 igroup_linux A_1,A_2 vsa_1 /vol/vsa_1_vol2/lun_linux_4 igroup_linux A_1,A_2 vsa_1 /vol/vsa_1_vol3/lun_linux_7 igroup_linux A_1,A_2 vsa_1 /vol/vsa_1_vol4/lun_linux_8 igroup_linux A_1,A_2 vsa_1 /vol/vsa_1_vol4/lun_linux_9 igroup_linux A_1,A_2 vsa_1 /vol/vsa_1_vol6/lun_linux_12 igroup_linux A_1,A_2 vsa_1 /vol/vsa_1_vol6/lun_linux_13 igroup_linux A_1,A_2 vsa_1 /vol/vsa_1_vol7/lun_linux_14 igroup_linux A_1,A_2 vsa_1 /vol/vsa_1_vol8/lun_linux_17 igroup_linux A_1,A_2 vsa_1 /vol/vsa_1_vol9/lun_linux_18 igroup_linux A_1,A_2 vsa_1 /vol/vsa_1_vol9/lun_linux_19 igroup_linux A_1,A_2 12 entries were displayed.
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添加报告节点以包括 MetroCluster IP 节点。
cluster_A::> lun mapping add-reporting-nodes -vserver vsa_1 -path /vol/vsa_1_vol*/lun_linux_* -nodes B_1,B_2 -igroup igroup_linux 12 entries were acted on.
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列出报告节点并验证是否存在新节点:
cluster_A::> 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 A_1,A_2,B_1,B_2 vsa_1 /vol/vsa_1_vol1/lun_linux_3 igroup_linux A_1,A_2,B_1,B_2 vsa_1 /vol/vsa_1_vol2/lun_linux_4 igroup_linux A_1,A_2,B_1,B_2 vsa_1 /vol/vsa_1_vol3/lun_linux_7 igroup_linux A_1,A_2,B_1,B_2 ... 12 entries were displayed.
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验证是否已
sg3-utils
软件包安装在Linux主机上。这样可以避免rescan-scsi-bus.sh utility not found
使用重新扫描Linux主机以查找新映射的LUN时出错rescan-scsi-bus
命令: -
重新扫描主机上的SCSI总线以发现新添加的路径:
/usr/bin/rescan-scsi-bus.sh -a
[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.
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显示新添加的路径:
sanlun lun show -p
每个 LUN 将有四个路径。
[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_
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在控制器上,将包含 LUN 的卷从 MetroCluster FC 移动到 MetroCluster IP 节点。
cluster_A::> vol move start -vserver vsa_1 -volume vsa_1_vol1 -destination-aggregate A_1_htp_005_aggr1 [Job 1877] Job is queued: Move "vsa_1_vol1" in Vserver "vsa_1" to aggregate "A_1_htp_005_aggr1". Use the "volume move show -vserver vsa_1 -volume vsa_1_vol1" command to view the status of this operation. cluster_A::> volume move show Vserver Volume State Move Phase Percent-Complete Time-To-Complete --------- ---------- -------- ---------- ---------------- ---------------- vsa_1 vsa_1_vol1 healthy initializing - -
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在 FC SAN 客户端上,显示 LUN 信息:
sanlun lun show -p
LUN 现在所在的 MetroCluster IP 节点上的 FC 接口将更新为主路径。如果在卷移动后未更新主路径,请运行 /usr/bin/rescan-scsi-bus.sh -a ,或者等待多路径重新扫描发生。
以下示例中的主路径是 MetroCluster IP 节点上的 LIF 。
[root@localhost ~]# sanlun lun show -p ONTAP Path: vsa_1:/vol/vsa_1_vol1/lun_linux_2 LUN: 22 LUN Size: 2g Product: cDOT Host Device: 3600a098038302d324e5d50305063546e Multipath Policy: service-time 0 Multipath Provider: Native --------- ---------- ------- ------------ ---------------------------------------------- host vserver path path /dev/ host vserver state type node adapter LIF --------- ---------- ------- ------------ ---------------------------------------------- up primary sddv host6 fc_5 up primary sdjx host7 fc_6 up secondary sdgv host6 fc_8 up secondary sdkr host7 fc_8
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对属于 FC SAN 主机的所有卷, LUN 和 FC 接口重复上述步骤。
完成后,给定 SVM 和 FC SAN 主机的所有 LUN 都应位于 MetroCluster IP 节点上。
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删除报告节点并从客户端重新扫描路径。
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删除 Linux LUN 的远程报告节点( MetroCluster FC 节点):
lun mapping remove-reporting-nodes -vserver vsa_1 -path * -igroup igroup_linux -remote-nodes true
cluster_A::> lun mapping remove-reporting-nodes -vserver vsa_1 -path * -igroup igroup_linux -remote-nodes true 12 entries were acted on.
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检查 LUN 的报告节点:
lun mapping show -vserver vsa_1 -fields reporting-nodes -ostype linux
cluster_A::> 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 B_1,B_2 vsa_1 /vol/vsa_1_vol1/lun_linux_3 igroup_linux B_1,B_2 vsa_1 /vol/vsa_1_vol2/lun_linux_4 igroup_linux B_1,B_2 ... 12 entries were displayed.
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重新扫描客户端上的SCSI总线:
/usr/bin/rescan-scsi-bus.sh -r
从 MetroCluster FC 节点删除路径:
[root@stemgr]# /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] ...
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验证是否仅可从主机中看到 MetroCluster IP 节点的路径:
sanlun lun show -p
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如果需要,请从 MetroCluster FC 节点中删除 iSCSI LIF 。
如果节点上没有映射到其他客户端的其他 LUN ,则应执行此操作。
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