IWSVA has a log storage limit. If you do not want to purge old logs, you can offload the logs to an external device for permanent storage and if you want to analyze them in the future, you can retrieve these logs from the storage device and restore them in IWSVA.
IWSVA enables you to offload logs to the following:
- External hard drive or USB flash drive
- Unix NFS share folder
- Windows share folder
- A folder on local hard drive
For more details, refer to the IWSVA online help topic about Mounting Devices for Log Offload.
However, if you want to add a new hard drive to the IWSVA virtual machine and mount it for Log Offload, follow the steps below.
If the new hard disk is already recognized by IWSVA, skip the first step and go to step 2. You can confirm it using the following command:
# ls /dev/sd*
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Add a new hard disk on IWSVA VM. If it is the second disk, its name would be /dev/sdb. For the third disk, it would be /dev/sdc.
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Use the command to list all available partitions:
# ls /dev/sd*
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Determine which SCSI host is in use:
# grep mpt /sys/class/scsi_host/host?/proc_name
The command will return a line such as "/sys/class/scsi_host/host0/proc_name:mptspi". In this example, the SCSI host is "host0".
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Then rescan the bus by informing the SCSI host that has been determined in the previous step. The 3 “-” are acting as wildcards to represent the “Channel, SCSI ID and LUN” that are available on a SCSI host.
# echo "- - -" > /sys/class/scsi_host/host0/scan
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Repeat the command to list all available partitions and note that the new disc is now listed. In this example, the new disk is /dev/sdb.
# ls /dev/sd*
-
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Create a partition and change its type to Linux Logical Volume Manager (LVM):
# fdisk /dev/sdb
• Type n = add new partition
• Type p = primary
• Type 1 = only one partition
• Press Enter to use the Default First cylinder
• Press Enter to use the Default Last cylinder
• Type w = Save the changes
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List all available partitions and note that the new partition is now listed. In this case the new partition is /dev/sdb1:
# ls /dev/sd*
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Run the command "mke2fs -j /dev/sdb1" to format /dev/sdb1.
# mke2fs -j /dev/sdb1
Make sure to type the right partition. Otherwise, this command will format the incorrect partition and damage the IWSVA installation.
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On the IWSVA WebUI, go to Logs > Log Settings. On the Mount device field, enter the new "/var/offload" device /dev/sdb1 then click Mount.
The purge days must be more than 45.On the Store logs for field, enter "45". Select the Log Offload checkbox then click Save.
