[CA API Gateway layer7 VM] How to increase the /tmp for patching WITHOUT downtime

Discussion created by GARMA26 Employee on Dec 11, 2018
Latest reply on Dec 13, 2018 by Ronko

9.4 patches are substantially big and the normal 2GB size of the /tmp of the gateway is insufficient for dealing with it.


here is a way to increase the space on the /tmp:


1) in your VMWare, create a new 10-15GB HDD  for that VM

2) log in the gateway in ssh and log in as super user

3) run fdisk -l

the new drive should show as /dev/sdX (where X is the next available letter of the alphabet, for the next steps we will assume that it is /dev/sdb)

N.B.: there is a possibility that the drive will not show, in which case you have to trigger the scanning manually with the

following command for each:


               echo "scsi add-single-device" 0 0 1 0 > /proc/scsi/scsi*


               echo "- - -" > /sys/class/scsi_host/host#/scan
to know what # to use in host# issue an 
               ls /sys/class/scsi_host
and for each entry just run the 'echo' command above 


Do perform an fdisk -l after that to determine the /dev/sdX that was added.

(sometimes even fdisk -l will not see it, check with lsblk if you can see the disk, if that fails too, then ask Infrastructure to check that they added the disk correctly.)

IF you see the disk via lsblk , you can continue with the steps herebelow


After which, here is the list of commands:

      fdisk /dev/sdb

        in here issue the following combo in that order:

         n    (← to create a new partition)

            p   (← to mention that it is a primary partition)

            1   (← to mention that it is the first one)

            <Enter>   (← to accept the default first byte of the disk)

            <Enter>   (← to accept the default last byte of the disk)

         t   (← to change the type of the partition)

            8e   (← to specify LVM format for that partition)

         w    (← to write the changes to disk)

      pvcreate /dev/sdb1
   vgextend vg00 /dev/sdb1
   lvextend -l +100%FREE /dev/vg00/lv_tmp
   resize2fs /dev/vg00/lv_tmp


Now you can resume the patching.


Happy patching!