1.
Open a console to the ESXi/ESX
host.
2.
Use the esxcfg-mpath command to obtain a list
of all device paths, and filter by their State:
# esxcfg-mpath --list-paths --device <device mpx/naa name> | grep state
If you do not know the problem device ID or you have many devices it may be more efficient to use this command to identify the dead paths:
# esxcfg-mpath -b |grep -C 1 dead
# esxcfg-mpath --list-paths --device <device mpx/naa name> | grep state
If you do not know the problem device ID or you have many devices it may be more efficient to use this command to identify the dead paths:
# esxcfg-mpath -b |grep -C 1 dead
3.
If any path reports the
State dead, but other paths to the same device report
the state Up, perform a rescan to remove the stale device
entries.
4.
If every path to a LUN reports
a State of dead, then the LUN is in an All-Paths-Down state.
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