There are two errors which appear.
First Error:
May 31 06:20:03 ukvirt07 vmkernel: 1:20:06:07.459 cpu8:1049)WARNING: NFS: 1736: Failed to get attributes (I/O error)
May 31 06:20:03 ukvirt07 vmkernel: 1:20:06:07.459 cpu11:1047)WARNING: NFS: 1736: Failed to get attributes (I/O error)
Second Error:
May 31 14:24:56 esxdmz vmkernel: 1:03:09:05.312 cpu4:1032)WARNING: NFS: 257: Mount: (ESX_CIFS_01) Server (10.119.204.10) 10.119.204.10 Volume: (/vol/ESX_CIFS_01/Q_ESX_CIFS_01) not responding
May 31 14:25:43 esxdmz vmkernel: 1:03:09:52.776 cpu7:1077)WARNING: NFS: 281: Mount: (ESX_CIFS_01) Server (10.119.204.10) 10.119.204.10 Volume: (/vol/ESX_CIFS_01/Q_ESX_CIFS_01) OK
May 31 21:35:06 esxdmz vmkernel: 1:10:19:14.563 cpu6:1040)WARNING: NFS: 1736: Failed to get attributes (I/O error)
May 31 21:35:36 esxdmz vmkernel: 1:10:19:44.606 cpu7:1039)WARNING: NFS: 1736: Failed to get attributes (I/O error)
May 31 21:35:56 esxdmz vmkernel: 1:10:20:04.629 cpu5:1032)WARNING: NFS: 257: Mount: (VM_NFS_DMZ01) Server (10.119.204.10) 10.119.204.10 Volume: (/vol/VMS_NFS_DMZ01/Q_VMS_NFS_DMZ01) not responding
May 31 21:36:06 esxdmz vmkernel: 1:10:20:14.643 cpu5:1041)WARNING: NFS: 1736: Failed to get attributes (I/O error)
May 31 21:36:06 esxdmz vmkernel: 1:10:20:14.643 cpu6:1040)WARNING: NFS: 1736: Failed to get attributes (No connection)
May 31 21:36:06 esxdmz vmkernel: 1:10:20:14.659 cpu6:1040)WARNING: NFS: 1736: Failed to get attributes (No connection)
May 31 21:36:06 esxdmz vmkernel: 1:10:20:14.659 cpu6:1040)WARNING: NFS: 1736: Failed to get attributes (No connection)
May 31 21:36:06 esxdmz vmkernel: 1:10:20:14.659 cpu5:1041)WARNING: NFS: 1736: Failed to get attributes (No connection)
May 31 21:36:06 esxdmz vmkernel: 1:10:20:14.704 cpu5:1041)WARNING: NFS: 1736: Failed to get attributes (No connection)
May 31 21:36:06 esxdmz vmkernel: 1:10:20:14.721 cpu5:1041)WARNING: NFS: 1736: Failed to get attributes (No connection)
May 31 21:36:06 esxdmz vmkernel: 1:10:20:14.723 cpu6:1040)WARNING: NFS: 1736: Failed to get attributes (No connection)
May 31 21:36:06 esxdmz vmkernel: 1:10:20:14.723 cpu5:1041)WARNING: NFS: 1736: Failed to get attributes (No connection)
May 31 21:36:06 esxdmz vmkernel: 1:10:20:14.745 cpu6:1040)WARNING: NFS: 1736: Failed to get attributes (No connection)
May 31 21:36:06 esxdmz vmkernel: 1:10:20:14.745 cpu5:1039)WARNING: NFS: 1736: Failed to get attributes (No connection)
May 31 21:36:06 esxdmz vmkernel: 1:10:20:14.748 cpu6:1040)WARNING: NFS: 1736: Failed to get attributes (No connection)
May 31 21:36:06 esxdmz vmkernel: 1:10:20:14.773 cpu5:1041)WARNING: NFS: 1736: Failed to get attributes (No connection)
May 31 21:36:06 esxdmz vmkernel: 1:10:20:14.806 cpu5:1041)WARNING: NFS: 1736: Failed to get attributes (No connection)
May 31 21:37:10 esxdmz vmkernel: 1:10:21:18.340 cpu6:1041)WARNING: NFS: 1736: Failed to get attributes (No connection)
May 31 21:37:10 esxdmz vmkernel: 1:10:21:18.341 cpu6:1041)WARNING: NFS: 1736: Failed to get attributes (No connection)
May 31 21:37:10 esxdmz vmkernel: 1:10:21:18.357 cpu6:1040)WARNING: NFS: 1736: Failed to get attributes (No connection)
May 31 21:37:10 esxdmz vmkernel: 1:10:21:18.357 cpu6:1040)WARNING: NFS: 1736: Failed to get attributes (No connection)
May 31 21:37:41 esxdmz vmkernel: 1:10:21:49.224 cpu6:1101)WARNING: VSCSI: 5236: READ_CAPACITY : Could not get capacity for virtual device
May 31 21:37:41 esxdmz vmkernel: 1:10:21:49.231 cpu6:1101)WARNING: VSCSI: 5236: READ_CAPACITY : Could not get capacity for virtual device
May 31 21:37:41 esxdmz vmkernel: 1:10:21:49.231 cpu6:1101)WARNING: VSCSI: 5236: READ_CAPACITY : Could not get capacity for virtual device
May 31 21:37:42 esxdmz vmkernel: 1:10:21:50.864 cpu7:1101)WARNING: VSCSIFs: 426: scatter-gather says length 0, op says 4096
May 31 21:37:44 esxdmz vmkernel: 1:10:21:52.581 cpu5:1101)WARNING: VSCSIFs: 426: scatter-gather says length 0, op says 4096
May 31 21:37:45 esxdmz vmkernel: 1:10:21:53.852 cpu5:1101)WARNING: VSCSIFs: 426: scatter-gather says length 0, op says 4096
May 31 21:37:45 esxdmz vmkernel: 1:10:21:53.894 cpu5:1041)WARNING: NFS: 1736: Failed to get attributes (No connection)
May 31 21:37:45 esxdmz vmkernel: 1:10:21:53.894 cpu5:1039)WARNING: NFS: 1736: Failed to get attributes (No connection)
May 31 21:39:15 esxdmz vmkernel: 1:10:23:23.384 cpu3:1122)WARNING: NFS: 281: Mount: (VM_NFS_DMZ01) Server (10.119.204.10) 10.119.204.10 Volume: (/vol/VMS_NFS_DMZ01/Q_VMS_NFS_DMZ01) OK
Jun 1 17:01:27 esxdmz vmkernel: 2:05:45:32.258 cpu3:1039)WARNING: NFS: 1736: Failed to get attributes (I/O error)
Jun 1 17:01:57 esxdmz vmkernel: 2:05:46:02.282 cpu0:1041)WARNING: NFS: 1736: Failed to get attributes (I/O error)
Jun 1 17:02:27 esxdmz vmkernel: 2:05:46:32.300 cpu3:1039)WARNING: NFS: 1736: Failed to get attributes (I/O error)
Jun 1 23:53:26 esxdmz vmkernel: 2:12:37:29.706 cpu3:1041)WARNING: NFS: 1736: Failed to get attributes (I/O error)
Jun 1 23:53:56 esxdmz vmkernel: 2:12:37:59.725 cpu2:1039)WARNING: NFS: 1736: Failed to get attributes (I/O error)
Jun 1 23:54:13 esxdmz vmkernel: 2:12:38:16.735 cpu1:1032)WARNING: NFS: 257: Mount: (VM_NFS_DMZ01) Server (10.119.204.10) 10.119.204.10 Volume: (/vol/VMS_NFS_DMZ01/Q_VMS_NFS_DMZ01) not responding
Jun 1 23:54:26 esxdmz vmkernel: 2:12:38:29.747 cpu0:1040)WARNING: NFS: 1736: Failed to get attributes (I/O error)
Jun 1 23:54:26 esxdmz vmkernel: 2:12:38:29.761 cpu0:1039)WARNING: NFS: 1736: Failed to get attributes (No connection)
Jun 1 23:54:26 esxdmz vmkernel: 2:12:38:29.778 cpu3:1040)WARNING: NFS: 1736: Failed to get attributes (No connection)
Jun 1 23:54:26 esxdmz vmkernel: 2:12:38:29.792 cpu3:1041)WARNING: NFS: 1736: Failed to get attributes (No connection)
Jun 1 23:54:26 esxdmz vmkernel: 2:12:38:29.793 cpu3:1039)WARNING: NFS: 1736: Failed to get attributes (No connection)
Jun 1 23:54:26 esxdmz vmkernel: 2:12:38:29.823 cpu1:1041)WARNING: NFS: 1736: Failed to get attributes (No connection)
Jun 1 23:54:26 esxdmz vmkernel: 2:12:38:29.839 cpu1:1040)WARNING: NFS: 1736: Failed to get attributes (No connection)
Jun 1 23:54:26 esxdmz vmkernel: 2:12:38:29.842 cpu3:1039)WARNING: NFS: 1736: Failed to get attributes (No connection)
Jun 1 23:54:26 esxdmz vmkernel: 2:12:38:29.843 cpu1:1040)WARNING: NFS: 1736: Failed to get attributes (No connection)
Jun 1 23:54:26 esxdmz vmkernel: 2:12:38:29.871 cpu3:1039)WARNING: NFS: 1736: Failed to get attributes (No connection)
Jun 1 23:54:26 esxdmz vmkernel: 2:12:38:29.887 cpu1:1040)WARNING: NFS: 1736: Failed to get attributes (No connection)
Jun 1 23:54:26 esxdmz vmkernel: 2:12:38:29.919 cpu1:1040)WARNING: NFS: 1736: Failed to get attributes (No connection)
Jun 1 23:54:26 esxdmz vmkernel: 2:12:38:29.919 cpu2:1041)WARNING: NFS: 1736: Failed to get attributes (No connection)
Jun 1 23:55:31 esxdmz vmkernel: 2:12:39:35.385 cpu3:1027)WARNING: NFS: 281: Mount: (VM_NFS_DMZ01) Server (10.119.204.10) 10.119.204.10 Volume: (/vol/VMS_NFS_DMZ01/Q_VMS_NFS_DMZ01) OK
Jun 2 00:06:29 esxdmz vmkernel: 2:12:50:33.346 cpu2:1041)WARNING: NFS: 1736: Failed to get attributes (I/O error)
Jun 2 00:06:59 esxdmz vmkernel: 2:12:51:03.372 cpu1:1039)WARNING: NFS: 1736: Failed to get attributes (I/O error)
Jun 2 00:07:24 esxdmz vmkernel: 2:12:51:28.404 cpu1:1032)WARNING: NFS: 257: Mount: (VM_NFS_DMZ01) Server (10.119.204.10) 10.119.204.10 Volume: (/vol/VMS_NFS_DMZ01/Q_VMS_NFS_DMZ01) not responding
Jun 2 00:07:29 esxdmz vmkernel: 2:12:51:33.411 cpu0:1040)WARNING: NFS: 1736: Failed to get attributes (I/O error)
Jun 2 00:07:29 esxdmz vmkernel: 2:12:51:33.445 cpu2:1041)WARNING: NFS: 1736: Failed to get attributes (No connection)
Jun 2 00:07:29 esxdmz vmkernel: 2:12:51:33.445 cpu1:1040)WARNING: NFS: 1736: Failed to get attributes (No connection)
Jun 2 00:07:29 esxdmz vmkernel: 2:12:51:33.445 cpu2:1039)WARNING: NFS: 1736: Failed to get attributes (No connection)
Jun 2 00:07:30 esxdmz vmkernel: 2:12:51:33.475 cpu2:1041)WARNING: NFS: 1736: Failed to get attributes (No connection)
Jun 2 00:07:30 esxdmz vmkernel: 2:12:51:33.520 cpu1:1040)WARNING: NFS: 1736: Failed to get attributes (No connection)
Jun 2 00:07:30 esxdmz vmkernel: 2:12:51:33.530 cpu1:1039)WARNING: NFS: 1736: Failed to get attributes (No connection)
Jun 2 00:07:30 esxdmz vmkernel: 2:12:51:33.544 cpu1:1039)WARNING: NFS: 1736: Failed to get attributes (No connection)
Jun 2 00:07:55 esxdmz vmkernel: 2:12:51:59.386 cpu5:1123)WARNING: NFS: 281: Mount: (VM_NFS_DMZ01) Server (10.119.204.10) 10.119.204.10 Volume: (/vol/VMS_NFS_DMZ01/Q_VMS_NFS_DMZ01) OK
We have 27 volumes to host the different types of systems & services we offer our end users, these volumes also have different snapshot schedules.