Solution to multi-path linux errors "FoundduplicatePVxxx"

Solution to multi-path linux errors & quot; FoundduplicatePVxxx & quot; dcoadbpro :~ # Usage: using/dev/sdbnot/dev/sdaFounddupl multi-path related error solution for linux "Found duplicate PV xxx" dcoadbpro :~ # Vgs Found duplicate PV usage: using/dev/sdb not/dev/sda Found duplicate PV usage: using/dev/sdc not/dev/sdb Found duplicate PV usage: using/dev/sdd not/dev/sdc VG # PV # LV # SN Attr VSize VFree dcoadbpro_lv 1 1 0 wz -- n-1000.00g 10.00gvg can be displayed, but an error is reported, duplicate means repetition. good English students should have come to the point. that's right. I suspect there is a problem with the multi-path service. Generally, the storage and host connection links are at least dual links. I have four links here. when the multi-path service is not started or abnormal, we will see four identical PVS. The solution is as follows: dcoadbpro :~ # Lvs Found duplicate PV usage: using/dev/sdb not/dev/sda Found duplicate PV usage: using/dev/sdc not/dev/sdb Found duplicate PV usage: using/dev/sdd not/dev/sdc lv vg Attr LSize Origin Snap % Move Log Copy % Convert lvol0 dcoadbpro_lv-wi-a-990.00 gdcoadbpro :~ # Pvs Found duplicate PV usage: using/dev/sdb not/dev/sda Found duplicate PV usage: using/dev/sdc not/dev/sdb Found duplicate PV usage: using/dev/sdd not/dev/sdc pv vg Fmt Attr PSize PFree/dev/sdd dcoadbpro_lv lvm2 a-1000.00g 10.00 gdcoadbpro :~ # Dcoadbpro :~ # Dcoadbpro :~ # Service multipathd startStarting multipathd donedcoadbpro :~ # Dcoadbpro :~ # Dcoadbpro :~ # Dcoadbpro :~ # Pvs pv vg Fmt Attr PSize PFree/dev/mapper/36001438007f2ed80000300000d00000 dcoadbpro_lv lvm2 a-1000.00g 10.00 gdcoadbpro :~ # Lvs lv vg Attr LSize Origin Snap % Move Log Copy % Convert lvol0 dcoadbpro_lv-wi-a-990.00 gdcoadbpro :~ # Vgs VG # PV # LV # SN Attr VSize VFree dcoadbpro_lv 1 1 0 wz -- n-1000.00g 10.00 gdcoadbpro :~ # Dcoadbpro :~ # Dcoadbpro :~ # Dcoadbpro :~ # Dcoadbpro :~ # Chkconfig multipathd ondcoadbpro :~ # Chkconfig -- list | grep mulmultipathd 0: off 1: off 2: off 3: on 4: off 5: on 6: off is a common error, as a DBA, I don't need to know these things. this is what storage engineers or system engineers should know. However, if one day I was unlucky, the system engineers or storage engineers who worked with me were very careless and did not configure many paths, just like the problem I encountered now, then I found that my blog recorded such a record, so I should be very happy. Although Haha is very simple, it is still recorded.