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# vgdisplay -v /dev/vgscp
--- Volume groups ---
VG Name /dev/vgscp
VG Write Access read/write
VG Status available, exclusive
Max LV 255
Cur LV 3
Open LV 3
Max PV 16
Cur PV 4
Act PV 4
Max PE per PV 8683
VGDA 8
PE Size (Mbytes) 4
Total PE 34724
Alloc PE 13312
Free PE 21412
Total PVG 2
Total Spare PVs 0
Total Spare PVs in use 0
--- Logical volumes ---
LV Name /dev/vgscp/lvscu
LV Status available/stale
LV Size (Mbytes) 4096
Current LE 1024
Allocated PE 2048
Used PV 4
LV Name /dev/vgscp/lvsms
LV Status available/stale
LV Size (Mbytes) 20480
Current LE 5120
Allocated PE 10240
Used PV 4
LV Name /dev/vgscp/lvdatasync
LV Status available/syncd
LV Size (Mbytes) 2048
Current LE 512
Allocated PE 1024
Used PV 4
--- Physical volumes ---
PV Name /dev/dsk/c4t1d0
PV Status unavailable
Total PE 8681
Free PE 5353
Autoswitch On
PV Name /dev/dsk/c4t2d0
PV Status unavailable
Total PE 8681
Free PE 5353
Autoswitch On
PV Name /dev/dsk/c5t1d0
PV Status available
Total PE 8681
Free PE 5353
Autoswitch On
PV Name /dev/dsk/c5t2d0
PV Status available
Total PE 8681
Free PE 5353
Autoswitch On
--- Physical volume groups ---
PVG Name pvg0
PV Name /dev/dsk/c4t1d0
PV Name /dev/dsk/c4t2d0
PVG Name pvg1
PV Name /dev/dsk/c5t1d0
PV Name /dev/dsk/c5t2d0
# ioscan -fnClan
Class I H/W Path Driver S/W State H/W Type Description
========================================================================
lan 0 0/1/2/0 igelan CLAIMED INTERFACE HP PCI 1000Base-T Core
lan 2 0/3/1/0/6/0 igelan CLAIMED INTERFACE HP A9784-60002 PCI/PCI-X 1000Base-T FC/GigE Combo Adapter
lan 1 0/4/1/0/6/0 igelan CLAIMED INTERFACE HP A9784-60002 PCI/PCI-X 1000Base-T FC/GigE Combo Adapter
# ioscan -fnCfc
Class I H/W Path Driver S/W State H/W Type Description
========================================================================
fc 1 0/3/1/0/4/0 fcd CLAIMED INTERFACE HP 2Gb PCI/PCI-X Fibre Channel FC/GigE Dual Port Combo Adapter
/dev/fcd1
fc 0 0/4/1/0/4/0 fcd CLAIMED INTERFACE HP 2Gb PCI/PCI-X Fibre Channel FC/GigE Dual Port Combo Adapter
/dev/fcd0
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c4t1d0 、c4t2d0 在VG里面是狀態(tài)為unavailable ,ioscan -fnCdisk狀態(tài)為CLAIMED需要更換,下面為自己寫的更換步驟
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操作前必須做好備份
1、確認(rèn)故障VG
# vgdisplay -v
2、vgcfgbackup vgscp
3、備份/etc/lvmtab、/etc/lvmpvg、/etc/lvmconf/vgscp.conf
4、確定更換盤的nport_id 和 loop_id
# fcmsutil /dev/fcd1 get remote all
# fcmsutil /dev/fcd0 get remote all
5、確認(rèn)故障盤的位置及屬性
dd if=/dev/rdsk/c4t1d0 of=/dev/null bs=10240k
dd if=/dev/rdsk/c4t3d0 of=/dev/null bs=10240k
diskinfo /dev/rdsk/c4t1d0
diskinfo /dev/rdsk/c4t3d0
6、通知系統(tǒng)要換盤
根據(jù)命令確認(rèn)故障硬盤在哪條鏈路
# ioscan -fnCfc
Class I H/W Path Driver S/W State H/W Type Description
========================================================================
fc 1 0/3/1/0/4/0 fcd CLAIMED INTERFACE HP 2Gb PCI/PCI-X Fibre Channel FC/GigE Dual Port Combo Adapter
/dev/fcd1
fc 0 0/4/1/0/4/0 fcd CLAIMED INTERFACE HP 2Gb PCI/PCI-X Fibre Channel FC/GigE Dual Port Combo Adapter
/dev/fcd0
# fcmsutil /dev/fcd1 replace_dsk nport_id
注:在另一臺(tái)主機(jī)也執(zhí)行第六步驟
7、更換硬盤。 注意在拔下硬盤后不能ioscan,更換硬盤后再ioscan
#ioscan -fnCdisk
8、pvcreate -f /dev/rdsk/c4t2d0 如果pvcreate不成功,報(bào)已經(jīng)在/etc/lvmtab中存在,那么可以將/etc/lvmtab備份后刪除,再做pvcreate pvcreate完成后,將備份的lvmtab恢復(fù)后,再繼
續(xù)
9、vgcfgrestore -n /dev/vgscp /dev/rdsk/c4t2d0,恢復(fù)vg信息到新硬盤
10、如果沒有同步,可以使用vgsync、lvsync手工同步 不用以上命令可能會(huì)在換盤后無法IOSCAN 到DISK,因?yàn)橹鳈C(jī)記錄的是原來壞盤的 World- Wide Name (WWN), 不接受新盤的WWN。
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在更換過程中到第八步驟做pvcreate時(shí)報(bào)錯(cuò):pvcreate:writing LVM record:I/O error
在盤c4t2d0做DD時(shí)也報(bào)I/O錯(cuò)誤,更換了兩塊硬盤還是一個(gè)樣。麻煩各位兄弟看一下更換步驟是否有問題還是備件本身就是DOA的。謝謝
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