Month: March 2019

Just run this to reduce the write workload of your cluster… (this isn’t safe for critical data.. fine for logging ect.)

curl -XPUT 'http://127.0.0.1:9200/_all/_settings?preserve_existing=true' -d '{
 "index.number_of_replicas" : "0",
  "index.translog.durability" : "async",
 "index.refresh_interval" : "60s"
 }'

Default Password for EMC XtremIO:
XtremIO Management Server (XMS)

• Username: xmsadmin
  password: 123456 (prior to v2.4)
  password: Xtrem10 (v2.4+)

XtremIO Management Secure Upload

• Username: xmsupload
  Password: xmsupload

XtremIO Management Command Line Interface (XMCLI)

• Username: tech
  password: 123456 (prior to v2.4)
  password: X10Tech! (v2.4+)

XtremIO Management Command Line Interface (XMCLI)

• Username: admin
  password: 123456 (prior to v2.4)
  password: Xtrem10 (v2.4+)

XtremIO Graphical User Interface (XtremIO GUI)

• Username: tech
  password: 123456 (prior to v2.4)
  password: X10Tech! (v2.4+)

XtremIO Graphical User Interface (XtremIO GUI)

• Username: admin
  password: 123456 (prior to v2.4)
  password: Xtrem10 (v2.4+)

XtremIO Easy Installation Wizard (on storage controllers / nodes)

• Username: xinstall
  Password: xiofast1

XtremIO Easy Installation Wizard (on XMS)

• Username: xinstall
  Password: xiofast1

Basic Input/Output System (BIOS) for storage controllers / nodes

• Password: emcbios

Basic Input/Output System (BIOS) for XMS

• Password: emcbios

Objective

• You want to add 12 additional SSDs to an existing Starter X-Brick (10TB with only 5TB installed) in your environment (less than 12 is not supported, however it is technically possible).

Prerequisites

• Valid support contract with Dell-EMC, you will need to access documentation that requires a valid login to Dell-EMC support.
• X-Brick is fully functional and connected to an XMS.
• Have a copy of the default passwords for XtremIO, I cannot list them here due to the Dell-EMC partner agreement. The accounts you will be using are: tech and xmsadmin. You have to access Dell-EMC support and search for Article number “332100”.
• Have access to the XtremIO Management System (XMS).
• The “EMC XtremIO Storage Array Software Installation and Upgrade Guide”, “Chapter 9, Expanding a 10TB Starter X-Brick (5TB)” from Dell-EMC supportcovers this in detail. This procedure does cover the mechanism from the UI and SSH. I had problems with the UI method and was forced to use the SSH procedure.

Step 1 – Install the additional SSD drives into the X-Brick Chassis

• Open the rack that houses the X-Brick you want to add storage to.
• Remove the 12 plastic SSD fillers from slots 13 to 24.
• Install the 12 SSD drives into slots 13 to 24.

Step 2 – Login to the XMS UI

• The XMS UI will be used to track the SSD drives being brought online via the Alerts & Events screen.
• The SSH session in Step 3 will be used to issue the commands to bring each SSD online. It takes approximately 3 minutes per SSD.
• Access the XMS UI by opening a browser and entering https://<XMS IP address> from your JumpBox/Laptop. Download the Java applet and launch it. Accept any Java warnings and login as “tech” (get default password from Dell-EMC support). This is a configured XMS instance, you should see the X-Brick cluster in the UI.
• Select the Inventory pane of the UI, select the Table View and then select the SSD object. The new SSDs should have a “DPG State” of “Not in DPG” and “Lifecycle State” of “Uninitialized”. The existing SSDs will be “In DPG” and “Healthy” respectively.
• Make a note of the X-Brick ID, the DPG ID and the DPG “Useful SSD Space”and “User Space”.
• Keep the XMS UI open with the Alerts & Events window selected. This is how the status of each SSD addition will be tracked.

Step 3 – Initialize each SSD and bring Online

• Open Putty and SSH to the XMS IP address and login with “xmsadmin” and then with username “tech” (get default password from Dell-EMC support).
• Use the command “show-ssds” to get the SSD list of the X-Brick, including the WWN identifiers. The WWN identifier for each slot will be used in the following steps.
• Starting from Slot 13, sequentially execute the following commands. Use the X-Brick, DPG and WWN IDs recorded earlier.
• Use the command “add-ssd brick-id=”<X-Brick ID>” ssd-uid=”<SSD-WWN>” is-foreign-xtremapp-ssd” to initialize the SSD in the X-Brick. My use-case had SSDs from another X-Brick, so I had to force the command by using the “is-foreign-xtremapp-ssd” flag.
• Use the command “assign-ssd dpg-id=”<DPG ID>” ssd-uid=”<SSD-WWN>””to add the SSD to the Data Protection Group (DPG).
• Check the XMS Alerts and Events UI to track the percentage of completion for this task.
• As each event has completes (it will turn Green with a “Cleared” state), proceed to the next slot, until Slot 24 is reached and completed.
• Select the Inventory pane of the XMS UI, select the Table View and then select the SSD object. All 25 SSDs should have a “DPG State” of “In DPG” and a “Lifecycle State” of “Healthy”.
• Then select the Data Protection Groups object and verify the DPG “Useful SSD Space” and “User Space” have doubled.
• The XMS Dashboard will also show a doubling of Physical Capacity.
• Your XtremIO X-Brick solution is now ready to provide additional storage services: EMC XtremIO – Provisioning a LUN.

# Is Rusting?
ACTION=="add|change", KERNEL=="sd[a-z]{1,3}", ATTR{queue/rotational}=="1", ATTR{queue/scheduler}="cfq"

# LSI SSD
ACTION==“add|change”, KERNEL==“sd[a-z]{1,3}“, ATTR{queue/rotational}==“0”, ATTR{queue/scheduler}=“noop”, ATTR{queue/nr_requests}=“975”, ATTR{device/queue_depth}=“975"