Host does not see some data warehouses

I add a new host in a cluster of ESX 4.  ISCSI Storage Adapter on all hosts (old and new) detects all available Lun, 10 in total.  However, 2 of the LUNS appear not in the list of data stores in the new host.  Thus, guests see 10 stores of data.  Guests are running live virtual machines that reside on the 2 "missing" data warehouses.  The new host sees only 8 of the 10 stores of data.

I see the text "detected can be a snapshot" and "not open device"4c19dd2e-f64dfcc4-f94f-a4badb4fcdb6"to probe: no such target on the map.

"in/var/log/vmkernel.  What to do with these averages of message?

4126) LVM: 7165: found device naa.60a98000572d4374433450444335486d:1 can get to be a snapshot:

18 June-15:47:28 corpesx2 vmkernel: 0:00:03:39.125 cpu16:4126) LVM: 7172: questioned disk ID:

18 June-15:47:28 corpesx2 vmkernel: 0:00:03:39.226 cpu16:4126) Vol3: 1488: could not open device "4c19dd2e-f64dfcc4-f94f-a4badb4fcdb6" to probe: no such target on the map

18 June-15:47:28 corpesx2 vmkernel: 0:00:03:39.226 cpu16:4126) Vol3: 608: could not open device "4c19dd2e-f64dfcc4-f94f-a4badb4fcdb6" open volume: no such target on the map

18 June-15:47:28 corpesx2 vmkernel: 0:00:03:39.226 cpu16:4126) SFS: 3702: pilot no. FS claimed device '4c19dd2e-f64dfcc4-f94f-a4badb4fcdb6': unsupported

June 18 at 15:47:30 corpesx2 vmkernel: 0:00:03:40.594 cpu2:4098) NMP: nmp_CompleteCommandForPath: command 0 x 12 (0x410007114b80) for device NMP 'mpx.vmhba1:C0:T0:L0' failed on the physical path 'vmhba1:C0:T0:L0' H:0 x 0 D:0 x 2 P:0 x 0 valid sense data: 0 x 5 0 x 24 0 x 0.

June 18 at 15:47:30 corpesx2 vmkernel: 0:00:03:40.594 cpu2:4098) ScsiDeviceIO: 747: command 0 x 12 for the device "mpx.vmhba1:C0:T0:L0" has no sense H:0 x 0 D:0 x 2 P:0 0 valid x-data: 0 x 5 0 24 x 0 x 0.

I see the text "detected to be a snapshot" and "Could not open device.

"4c19dd2e-f64dfcc4-f94f-a4badb4fcdb6" to probe: no such target on

adapter

"in/var/log/vmkernel.  What to do with these averages of message?

It could be due to various reasons:

1. lost on the host partition table.  Check with fdisk-lu < devname >

2 LUNS can be detected as snapshot.  -> esxcfg-volumes - l should show snapshot volumes.

esxcfg-volumes - M < Datastore UUID >

This will force up the volume.

vmkfstools v

to refresh the storage.

then if all goes well, you should be good to go.

3. corruption of LUN. -> Please contact VMware support or support from the SAN vendor to fix it.

Please consider awarding point if this information is useful.

Tags: VMware

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