Esxcli storage vmfs unmap

25. 5. XtremIO fully supports UNMAP esxcli storage vmfs unmap -u escli commands- How to get ESXi version information? ~ # esxcli system version get Using the esxcli storage vmfs unmap command to rec UNMAP can be run anywhere esxcli is installed and therefore does not require an SSH session: Run esxcli and supply the datastore name. Finally, It is run differently in 5. vSphere 5. Thanks to VMware vSphere 6. Starting in ESXi 5. Core” how I can get it ? VMFS5 and earlier file systems do not unmap free space automatically, but you can use the esxcli storage vmfs unmap command to reclaim space manually.


23 VMworld 2017 Content: Not for publication or distribution At a Guest OS level, storage space is freed when you delete files on a thinly provisioned VMDK and then exists as dead or stranded space. Storage is always implemented in layers. Now this only works in vSphere 6. Reclaiming Unused Storage Space When VMFS datastores reside on thin-provisioned LUNs, you can use ESXCLI commands to reclaim the unused logical blocks of a thin-provisioned LUN formatted with VMFS. With the release of LeftHand OS 12. VAAI are the vSphere APIs for Array Integration. For newly created VMFS-5 file systems, the filesystem block size is always 1 MB.


esxcli storage vmfs unmap -u 5b16dbfa-1f62fe12-25f4-000c2981428e. 0 releases, the vmkfstools –y command is replaced by the esxcli storage vmfs unmap command, which specifies the number of free blocks (see VMware KB 2057513 for more info). For those who do not know, VAAI UNMAP was introduced in vSphere 5. Syntax of the command is as follows: esxcli storage {cmd} {cmd options} esxcli storage is the command which you can run directly into ESXi without any option. You must have an active VM on the datastore or the storage will never be reclaimed. Free up ESXi local drive VMFS datastore space after deleting data in a thin provisioned Windows VM Due to varied UNMAP command completion response times from the storage devices, the UNMAP operation can result in poor performance of the system which is why VMware is recommending that it be disabled on ESXi 5. 0 for the first time.


I tried to run esxcli storage vmfs unmap but it does not work on NFS volumes AFAIK. I am working on a powercli script to loop through each datastore in our environment and reclaim space on the thin provisioned LUNs. It is run differently in 5. cd /vmfs/volumes/ Run vmkfstools to trigger SCSI UNMAPs. By the way, if you want to turn auto reclaim on/off after datastore creation, that is available in the Configure datastore page. 5 introduced a new command in the esxcli namespace that allows deleted blocks to be reclaimed on thin provisioned LUNs that support the VAAI UNMAP primitive. ” Using esxcli in vSphere 5.


VMware has introduced a new command to the esxcli command framework to unmap storage. If you are upgrading from a previous Controller Firmware release, including 08. Then you wait. It went from using a vmkfstools command where the user passed a percentage of storage to reclaim synchronously, to an esxcli storage command which Starting with the E-Series Controller Firmware release 08. Some of my VCenter Environments contain a lot of Datastores, so it can get very redundant having to run the command one by one within the putty session. 0. esxcli storage vmfs unmap --volume-label=DATASTORENAME --reclaim-unit=200 (The above command runs a manual unmap on a datastore) After kicking it off, I noticed it wasn’t completing as fast as I thought it should be.


esxcli storage vmfs unmap -u 4532d832-4ff42822-50eg-d92g77fd8d49; If you run the command against a datastore that does not support the unmap functionality, such as DAS volumes, you will see the following error: Devices backing volume do not support UNMAP; CRON job. If it is not already, the first thing you need to do is enable shell on ESXi, something that is generally disabled for security reasons. 04. When running vSphere 6. Therefore, the only VMware option available is to use manual UNMAP which is executed via CLI: esxcli storage vmfs unmap -l <datastore_name>. To reclaim unused storage blocks on a VMFS datastore, run the command: esxcli storage core device list esxcli storage core device vaai status get -d <device id> After running this the unused space occupied by previouly-shrinked VMDK files, deleted VMDK files and other datastore files will be TRIM/UNMAP'ed. 0 to reclaim the free space when the VMs had to be moved or deleted from a datastore that is thin provisioned at the storage level.


3. Before: After running the command “esxcli storage vmfs unmap -l XIO-05-VMFS-013” and a few hours of patience and waiting: esxcli storage vmfs unmap --volume-label= volume_label Need to run the command once a day How to create a cron job in esxi 5. This is a task that should be scheduled and run multiple times per datastore to see any real benefit. In VMFS-5 this is manual, using the esxcli storage vmfs UNMAP command as seen in this post VMware Dead Space Reclamation (UNMAP) and Pure Storage; In VMFS-6 it is automatic, as seen in this post: What’s new in ESXi 6. In vSphere 5. I was looking in to what was new for vSphere 6. esxcli storage nmp device list .


0 you have run the following command. The function is shown below and it accepts two parameters at this time, which are the ESXi hostname and the Datastore name. 1 Ux – Asynchronous method esxcli storage Commands. It’s an early & essential, but limited, way of configuring some of the management elements for your ESXi hosts. Where -u is the UUID of the datastore. esxcli storage vmfs unmap -l MyDatastore. In this post we will see on how we can use the command “esxcli storage” to manage the storage on esxi.


Reason: VMFS with version 5 does not support unmap property [root@esxi:~] esxcli storage vmfs unmap --volume-label=stor2ds Devices backing volume {GUID here} do not support UNMAP I tried getting the vaai status, and absolutely everything is listed as unsupported. esxcli storage san fc list. This article provides steps to reclaim unused storage blocks on a VMFS datastore for a thin-provisioned device using the esxcli storage vmfs unmap command. 5 as it uses esxcli storage vmfs unmap –l <datastore name>, you have to specify the datastore name as the esxcli command can be run from anywhere, while the vmkfstools command had to be run from in the datastore you wanted to run it against! It is also a faster process in 5. 5 unmap command is integrated to esxcli command namespace. To demonstrate UNMAP, I’ll Storage vMotion a 500GB virtual machine from one 500GB LUN to another 500GB LUN. esxcli storage vmfs unmap -l datastore-name -n reclaim-unit.


5, as so: esxcli storage vmfs unmap -l DS-FS esxcli storage vmfs extent list. In VMware vSphere 5. • Storage DRS – VMFS5 and VMFS6 can coexist in the same datastore cluster. Storage Unmap in ESXi 5. 5 to reclaim VMFS deleted blocks on thin-provisioned LUNs (2057513) Running NFS datastores over CentOS presenting to ESXi 5. 5 to reclaim space in a thin provisioned storage How to Add VMFS 6 Datastore in vSphere 6. They will issue it to the dead space and dead space only.


esxcli storage vmfs unmap --volume-label=volume_label | --volume-uuid=volume_uuid (--reclaim-unit=number) You have the choice to use the volume label or the volume UUID. We just got notification about a potential issue with the VAAI UNMAP primitive when used on EMC VMAX storage systems with Enginuity version 5876. VNXe supports VMFS5 format with 1 MB of block size, hence 200 which is the default VMFS blocks to UNMAP is appropriate for VNXe environments. An empty datastore or one with inactive VMs will keep the allocated storage stranded. Perform VMFS UNMAP using PowerCLI. Should this be the case? Maybe something is turned off? Or it doesn't work with RAID 10 devices? 3. We backed up all the data on the disk -- about 100 GB.


Old command vmkfstools -y is is deprecated in ESXi 5. Now, in vSphere 6. Using vSphere Web Client to clean up a VMFS datastore that was esxcli storage vmfs unmap -l 1tb_55ds As for the optional parameter, the UNMAP command is an iterative process which continues through numerous cycles until complete. Reclaim thin provisioned space in VMware datastore Posted by Rob Koper on June 30, 2017 Leave a comment (0) Go to comments We were using a portable storage array as temporary storage array to store data from an older array that had to be reconfigured. esxcli storage vmfs extent list. Join GitHub today. 5, vmkfstools -y is deprecated and is replaced by the esxcli storage vmfs unmap command.


0 to reclaim VMFS deleted blocks on thin-provisioned LUNs (2057513) then run a command like this: esxcli storage vmfs unmap -l XIO2-VIEW-Desktops4. Recommendations is to run UNMAP manually by the following command on a datastore trough Putty SSH on a ESX 5. In a typical minimal case you have a physical disk, which contains partitions, which then contain file systems, which then contain files. Hence, you may leave the argument "reclaim-unit=number" as it is, it will by default will take 200 value. VAAI UNMAP was introduced in vSphere 5. VAAI Thin Provisioning Block Reclaim/UNMAP In Action. vmfs.


Some things should be simple, shrinking a thin provisioned virtual disk should be one of them, it’s not. ESXi Shell and ESXCLI. ESXi 6. NetApp cDOT and ESXi SCSI UNMAP support 22 Jun 2015. 5 Storage Part I: UNMAP; Once run (whether VMFS-6 did it automatically, or you ran it for VMFS-5 via a script or something) the Here is a script I have that I use quite frequently. esxcli storage vmfs unmap -u 509a9f1f-4ffb6678-f1db-001ec9ab780e Notes : The default value of 200 for the -n number or --reclaim-unit= number argument is appropriate in most environments, but some array vendors may suggest a larger or smaller value depending on how the array handles the SCSI UNMAP command. Core.


There are some additional enhancements to the reclaim mechanism too I'm running a vSphere 5. To use Automatic Space Reclamation, you need to have a VMFS6 datastore which is available only with vSphere 6. What's New in VMFS 6 Datastore For space reclamation in vSphere 5. Now one thing I need to point out that this is about unmapping blocks associated to a VMFS volume, if you delete files within a VMDK those blocks will not be unmapped! Howto use ESXCLI in PowerCLI Posted by fgrehl on February 15, 2014 Leave a comment (18) Go to comments PowerCLI, a set of PowerShell extensions for vSphere, is a great tool for automating VMware configuration and management tasks. For more information, see Using esxcli in vSphere 5. vSphere 6. Quote from VMware vSphere 6.


Automatic space reclaim. thank you for the script, I was looking for something like this. 0 U1 ESXi 5. Wait until the ESXi host returns “Done”. The fact that the new UNMAP is run from esxcli makes me hopeful that I will be able to script and schedule the UNMAP to occur during non-peak hours when the maintenance would not be service affecting. 5 ESX Virtualization Resources: vSphere 6. This will just reduce the VMDK’s usage on the VMFS datastore NOT resize the “provisioned size” of a thin disk.


5 and 6. 0 GA: UNMAP is synchronous but disabled in ESXi 5. Clone the newly created VM to the same NFS Datastore and the same time monitor the ESXi server log files by running the following command: esxcli storage vmfs unmap -l vmware_vswap 19. --help Show the help message. introduced a new command to the esxcli command framework to unmap storage. Refreshing the LUN information on my Netapp SAN I can see that the free space has now been released and the Available Size of the LUN is 5. I connected a thin provisioned iSCSI LUN to it as a datastore.


0, UNMAP was run by the vmkfstools –y command from the ESXi CLI, along with specifying the percentage of blocks that should be freed. #17: esxcli storage filesystem list Description : The command lists of all the volumes or datastores accessible by the ESXi host. 7 and utilizing a VMFS-6 datastore, we now have access to automatic LUN reclaim (this unmaps unused blocks on your LUN), which automatically unmaps unused storage on your LUNs. The snippet of code above will perform a SCSI UNMAP (old name) or VMFS UNMAP (new name) on a particular datastore. I tried running UNMAP with the command for 5. The reclaim unit parameter specifies the quantity of blocks to unmap per each iteration of the UNMAP process. 5, the only way to UNMAP from VMFS and storage was a call to an internal API which was used by Horizon Connection Broker.


This is a big improvement from the older vmkfstools -y method. 5 the vmkfstools –y command is replaced by the esxcli storage vmfs unmap command, which specifies the numbers of free blocks. Command Description Options Help; The uuid of the VMFS volume to unmap the free blocks. 1: Space reclamation with NFS datastores On Saturday, we removed/deleted a 150GB disk (thin provisioned) from one of our VMs. – Best practice: Use homogeneous storage devices (512n or 512e) for all datastores in the cluster. Good to see there is still being worked on new features and functionality for the core vSphere file system. N.


esxcli storage vmfs unmap -l <datastore name> -n (blocks per iteration) UNMAP with esxcli is an iterative process. 5 upgrade to test or get more details. Scenario: We have a 2TB LUN thin provisioned on an Equallogic group. To cut a long story short, UNMAP is an iterative process. Remember the LUN will need to be Thin provisioned with Space Reservation Disabled on a NetApp. This block reclaim primitive involved sending a SCSI UNMAP command to the array when we deleted or migrated a file from a TP datastore. This VAAI storage reclamation primitive feature has been introduced in vSphere 5.


5 you must use esxcli storage vmfs unmap -l volume_label because -y paramter was deprecated. When your LUN useage shows useage that does not match your datastore useage you will need to perform a reclaim on the lun. 00 (First Customer Shipment Release), existing Thin Volumes will not automatically support UNMAP after the upgrade until manual changes are made to This script will identify Pure Storage FlashArray volumes and issue UNMAP against them. I try it but I face issue with Get-PSSnapin -Name VMware. 7, UNMAP for SESparse now supports automatic UNMAP. psm1 vSphere 5. 5 hosts that see the VMFS-6 datastore participate in the UNMAP process.


0 to schedule a CRON job, you edit the cron job found at the Obtain the datastore name as shown in the vSphere client that the space discrepancy issue is seen on, and begin the unmap process using the following command: # esxcli storage vmfs unmap -l <datastore-name> OR: If the array is utilizing a large percentage please consider unmaping a small amount of space in each iteration using the -n flag. VAAI is supported and I checked the the Delete function for UNMAP is supported also. Consequently, it only worked in VDI environments. So let’s say you bring three VMFS5 datastores up to near capacity, but then you free up 30% on each datastore. The following is an overview of esxcli storage vmfs unmap -u 51ed3b46-XXXXXXX-XXXX-XXXXXXXXXXXX Note: You will need to replace 51ed3b46-XXXXXXX-XXXX-XXXXXXXXXXXX with the ID that you copied) By default, the reclaim number is going to be 200MB per VMware KB article 2057513 . Generally, I recommend using 60 to start with. One of the cool newly enabled features of vSphere 6.


The command to issue is. The volume UUID is easy to get – SSH into your host and navigate to your /vmfs/volumes and list the volumes from there. UNMAP can be run anywhere esxcli is installed and therefore does not require an SSH session: esxcli storage vmfs unmap -l <datastore name> -n (blocks per iteration) UNMAP with esxcli is an iterative process. So, if you have VMFS5 datastores, then you still have to do this using esxcli on the ESXi host. In each iteration, the command issues unmap commands to the number of file system blocks that are specified by the optional reclaim-unit argument, which defaults to 200. List all the volumes: esxcli storage vmfs extent list; Check VAAI options for the LUNs: esxcli storage core device vaai status get -d naa. 5 and only on VMFS6 datastores, VMFS5 datastores must still use the manual method using the esxcli command to reclaim space with the balloon file method.


We’re good then right? This article provides steps to reclaim unused storage blocks on a VMFS datastore for a thin-provisioned device using the esxcli storage vmfs unmap command. Using the UNMAP command, vSphere can issue a command to the storage array to deallocate blocks of storage freed by vSphere,for example from a deletion of a VM, and return it to the storage array’s resource pool without the involvement of a storage administrator. 5 or 6. Deleting or removing files from a VMFS datastore frees space within the file system. 0 U1 or later and vSphere 5. esxcli storage vmfs unmap -l Pure_Datastore -n 8000 ***See how to do it in PowerCLI here*** I ran UNMAP tests to a 1 TB FlashArray volume using block counts of 200, 400, 800 and 8000. Once you enable it, you can use a tool like putty to access Shell via an SSH session.


This is is used for a VMFS5 datastore on an ESXi 5. After VMFS 3 and 5, VMware has introduced VMFS 6 with all of the new storage enhancements that come with vSphere 6. xxxxxxxxxxxxxxxxxxxxxxxxxx This article provides steps to reclaim unused storage blocks on a VMFS datastore for a thin-provisioned device using the esxcli storage vmfs unmap command. ~] esxcli storage vmfs unmap -u xxxxxxx-xxxxx-xxxx… While this is running you will see no activity on the putty session but can monitor the progress from the Storage manager, this can take some time depending on space to be reclaimed, storage etc. When you create a VMFS6 datastore the default priority will be set to Low which sends UNMAP commands at a less frequent rate to the storage array. How To: HP StoreVirtual LeftHand OS 12. The new command is “unmap” and is under the esxcli storage vmfs namespace.


5 automated UNMAP at the VMFS level is available. Thin provisioning storage can be quite handy to save space, but is usually a one way street: as more blocks are written to the thin VMDK file, the larger the file gets. For ESX, don't reference the flat VMDK (usually called disk-flat. 5, VMFS UNMAP also know as Space Reclamation for a VMFS based datastore has been a pretty popular Storage capability in vSphere. This free space is mapped to a storage device until the file system releases or unmaps it. 0 With T10 UNMAP ‘, esxcli storage vmfs extent list esxcli storage vmfs unmap -l <Datastore-LUN> esxcli storage filesystem list. 159.


5, vmkfstools-y is deprecated and is replaced by the esxcli storage vmfs unmap command. VMFS6 supports the block size of 1 MB. 5 with HP 3PAR 7200 bend your thin storage to your will with ESXi unmap (or at least keep it honest). Regards. Run the below command to perform an UNMAP call utilising the volume UUID. Hi Cody, We met an issue with VMFS6 auto unmap months ago. Next, launch vmkfstools: vmkfstools -K [disk].


5 host ”Esxcli storage vmfs unmap –l DATASTORENAME” It will have a small performance impact when run. Boche. This action can lock some of the resources during the operation. ESXCLI is a command line interface (duh) for ESXi systems. Re: esxcli. storage. On an ESXi Host that can see the datastore DC02-NODR02, I’m going to run the command ‘vmkfstools -y 90’ ESX 5.


0 Guest OS UNMAP was introduced which reclaims storage within a thin vmdk, and beginning in vSphere 6. 22GB esxcli storage vmfs extent list 3. You will get a list that should show you the Volume Name, VMFS UUID and some other info choose either the name or the UUID then run the following command: esxcli storage vmfs unmap -u UUID NUMBER or esxcli storage vmfs unmap -l VOLUME NAME (use ' ' if there are spaces) 4. x Space Reclamation On Thin Provisioned Disks. 7 update 2 adds VMFS6 to the list of supported file systems by the vSphere On-disk Metadata Analyzer (VOMA) to allow you to check and fix issues with VMFS volumes metadata, LVM metadata, and partition table inconsistencies. This is required because ESXCLI operations on a per host level and we use that information to pass into Get-EsxCli cmdlet to issue the VAAI UNMAP operation. Space reclamation can be performed either on vSphere after a Storage vMotion has taken place or when files have been deleted from within a guest operating system.


Run this command to add a PSA claim rule to mark the device as SSD: # esxcli storage nmp This Function will process SCSI UNMAP on VMware Datastores via ESXCLI -V2 - Start-UNMAP. The suggestion is to manually run or schedule the command "esxcli storage vmfs unmap -l MyDatastore" I've tested a Storage vMotion and indeed the space on the source LUN remain allocated until manually "unmapped". To shrink a VMDK we can use an ESX command line tool UNMAP is a SCSI primitive that allows VMFS to communicate to the storage target that certain blocks are no longer used on a LUN backing a datastore. esxcli storage Commands. xxxxxxxxxxxxxxxxxxxxxxxxxx. Note: ASR only works with volumes that have been thin-provisioned and that support the vStorage API for Array Integration Unmap primitive. 1 cluster.


To reclaim space in vSphere 5. 5 # esxcli storage vmfs unmap command is used whereas in the earlier version vmkfstools –y command was used. storage vmfs upgrade: The esxcli is a command tool that is available on VMware ESXi for managing ESXi. Reference Sites: I would like to thank the following reference sites for the information in enabling me to put this tutorial together: Nimbleconnect – Tips and Tricks for using ESXTOP. So in the lab I have a vSphere ESXi 5. It took about 10 minutes per LUN for me. Now of course not only when a virtual machine is storage vmotioned but also when a virtual machine or for instance a virtual disk is deleted.


5 However, they were not unmapped VMFS and the storage. How to Identify disks and Datastore in VMware ESXi 5 / 6 skytech November 14, 2016 ESXi 5 , ESXi 6 No Comments There are a few reasons that will degrade the performance of virtual machines such as a disk I/O bottleneck, resource contention, misconfigurations and other problems. B. Unlike the vim-cmd command, it focuses on underlying infrastructure and touches lower level of controls of the ESXi hypervisor itself. 7 documentation set: VMFS6 processes the unmap request from the guest OS only when the space to reclaim equals 1 MB or is a multiple of 1 MB. I've tested a Storage vMotion and indeed the space on the source LUN remain allocated until manually "unmapped". Datastore name is self-explaining but reclaim-unit is not that easy to understand.


Optionally, a block iteration count can be specified, otherwise it defaults to reclaiming 200 MB per iteration: esxcli storage vmfs unmap -l <datastore name> -n (blocks per iteration) esxcli storage Commands. In vSphere 6. I have recently noticed that LUNs created on NetApp cDOT storage systems by default don’t support space reclamation (aka SCSI UNMAP) which is a part of the vSphere VAAI Thin Provisioning primitive: Configure new automatic Space Reclamation (VMFS UNMAP) using vSphere 6. There is an syntax of running the each command using the esxcli. In ESXi 5. After delete some VMs or VMDK from VMFS6 datastore (VM is powered on), run manual unmap command immediately (esxcli storage vmfs unmap -l), but there’s no space reclaimed on storage side, we found no unmap command sent from ESXi. vmdk).


0 With T10 UNMAP. Stay tuned for the full bakers dozen of code posts! esxcli, oh my esxcli storage vmfs unmap The full syntax of the command is not clear yet and I’ll have to wait for my 5. 5 to reclaim space in a thin provisioned storage Anyone tried running a cron job to reclaim space with this command? esxcli storage vmfs unmap --volume-label= volume_label Need to run the command once a day This post is the first detailed post coming out of my presentation Ditch the UI - vSphere Management with PowerCLI at the CT VMUG Usercon. My thin disks (NFS default) free space isn't automatically reclaimed, and sVmotioning isn't auto reducing the VMDK size. For 5. The article can be found here. With earlier versions of VMFS, something like esxcli storage vmfs unmap or vmkfstools is used to reclaim these blocks.


You could instead use: esxcli storage vmfs unmap -u 509a9f1f-4ffb6678-f1db-001ec9ab780e. 5 Dedicated page (All is there…) Installs, upgrades, migrations…. 5, it has an automatic unmap feature but it is not currently compatible with our (and some other vendors) storage as it does not correctly determine our unmap granularity (VMware are working on a fix) However, issuing UNMAP is still disabled by default. It allows you to change a lot of ESXi host and vCenter settings. 5 host. To enable Shell, follow the steps provided in KB 2004746. VMware supports to reclaim the deleted thin provisioned Storage blocks from UNMAP commands also known as SCSI UNMAP command.


However, issuing UNMAP is still disabled by default and space reclamation can be done manually by running the esxcli storage vmfs unmap command. Unfortunately, some performance issues were experienced with this new primitive, and the time taken to reclaim the stranded space by certain storage arrays led to some operations like Storage vMotion to time Using the esxcli storage vmfs unmap command to reclaim VMFS deleted blocks on thin-provisioned LUNs (2057513) | VMware K… FYI, VMware 6. esxcli storage vmfs unmap -u 509a9f1f-4ffb6678-f1db-001ec9ab780e Notes : The default value of 200 for the -n number or --reclaim-unit=number argument is appropriate in most environments, but some array vendors may suggest a larger or smaller value depending on how the array handles the SCSI UNMAP command. net – vSphere 5. 5 supports automatic space reclamation (SCSI unmap) that originates from a VMFS datastore or a Guest OS…the mechanism reclaims unused space from VM disks that are thin provisioned. Where ‘-l MyDatastore’ is the volume label as it appears to the ESXi host. I would definitely do this in slow periods of usage to avoid latency on your virtual machines.


vmkstools -y For ESXi 5. One powerful cmdlet is Get-EsxCli which allows you to run ESXCLI tasks from your PowerCLI console. This allowed the array to reclaim the freed blocks. 102 or later. When you use the command, be aware that it might send many unmap requests at a time. It’s a means to modify the VMHost systems, mostly but not entirely, as it relates to the hardware systems. 0 Guest OS UNMAP was introduced which reclaims Script to run esxcli unmap on all datastores attached to an ESXi host by rakhesh is licensed under a Creative Commons Attribution 4.


GitHub is home to over 31 million developers working together to host and review code, manage projects, and build software together. 5 UNMAP The next thing is, is your host(s) enabled to participate in automatic UNMAP? The way automatic UNMAP works is that all ESXi 6. 0 International License. A few weeks, my good pal Cody Hosterman over at Pure Storage was experimenting with VAAI and discovered that he could successfully UNMAP blocks (reclaim) directly from a Guest OS in vSphere 6. 0 Ux and 5. - Ran the "esxcli storage vmfs unmap" command on the Datastore - Restored again and the restore was still slow - Found we had the "VMFS3/EnableBlockDelete" set to 0, when it should be set to 1, so changed it to 1 - Re-ran the unmap command and verified using ESXTOP that delete operations were sent to the storage Zero free space using SDelete to shrink Thin Provisioned VMDK. 0 hosts.


ESXCLI – VMFS Storage Reclamation with UNMAP Command Typically when you provision your datastores for VMware, you will thin provision them. VMFS UNMAP in vSphere 5. Unmap granularity equals the block size, which is 1 MB. All LUNs in the environment are Dell Equal Logic. The LUN is running on a Synology DS1513+. It also uses up a good amount of Bandwidth on your storage system. On arrays that report granularity of 1 MB and less, the unmap operation is supported if the granularity is a factor of 1 MB.


Jason Boche has an excellent blog post entitled ‘Storage: Starting Thin and Staying Thin with VAAI UNMAP‘ on the vmkfstools command. 5 is the come back of VMFS storage space reclamation. With VMFS-6, the functionality is now automated and fully integrated in the vSphere 6. . 0 as covered in my post ‘ How To: HP StoreVirtual LeftHand OS 12. [root@macm:~] esxcli storage vmfs reclaim config get -l datastore1 Failed to retrieve unmap property for filesystem, VMkernel log may contain more details. As an example, the below screenshots detail a storage volume before and after an UNMAP call.


Now you can release a desired percentage of the free memory by using the command “vmkfstools -y“. 5, the vmkfstools command for UNMAP has been deprecated. The suggestion is to manually run or schedule the command "esxcli storage vmfs unmap -l MyDatastore" that invokes the SCSI UNMAP primitive. Marcel -u|–volume-uuid=<str> : The uuid of the VMFS volume to unmap the free blocks. Space reclamation granularity - Specify granularity for the unmap operation. Sample uses are: # esxcli storage vmfs unmap –volume-label datastore1 –reclaim-unit 100 # esxcli storage vmfs unmap -l datastore1 -n 100 # esxcli storage vmfs unmap –volume-uuid 515615fb-1e65c01d-b40f 001d096dbf97 –reclaim-unit 500 # esxcli storage vmfs The UNMAP primitive is used by the ESXi host to update the Storage Array about the storage blocks that has to be reclaimed after deleting a VM or migrating it to another datastore using Storage vMotion. xxxxxxxxxxxxxxxxxxxxxxxxxx .


Migrating VMFS 5 datastore to VMFS 6 datastore [Old KB on Manual Unmap: ] Using the esxcli storage vmfs unmap command to reclaim VMFS deleted blocks on thin-provisioned LUNs; vSphere 6. Due to performance overheads, this task is not scheduled automatically. ESXi supports reclamation of free space, which is also called the unmap operation. storage vmfs upgrade: escli commands- How to get ESXi version information? ~ # esxcli system version get Using the esxcli storage vmfs unmap command to rec Automated Storage Reclaim on Nutanix Acropolis Hypervisor (AHV) Next, after the storage is reclaimed at the guest level, the VMFS LUN must be reclaimed by running esxcli storage vmfs unmap on each LUN manually via the esxi command line. For VMFS 6 – VMFS 6 uses SESparse format for delta disks, which is more space efficient and supports a space reclamation technique. Hence, I decided to write one and the article is titled Perform VMFS UNMAP using PowerCLI. Technical white paper | HP 3PAR StoreServ Storage and VMware vSphere 5 best practices 6 When changing an existing host persona from 6 to 11, a host reboot is required for the change to take effect.


The script uses the best practice recommendation block count of 1% of the free capacity of the datastore. VimAutomation. Datastore VMFS version 6: Unmap automatically every 12 hours (not 100% sure about this interval) Datastore VMFS version 5: Unmap manually from the ESXi command line: esxcli storage vmfs unmap -l XIO-05-VMFS-013. esxcli storage vmfs unmap -u 516d394f-feefa340-1ab9-bc305bf18598 We had the same issue with freeing up space, and like you we had to go down to 1 replay - any less than that and the system won't be able to run data progression - Ran the "esxcli storage vmfs unmap" command on the Datastore - Restored again and the restore was still slow - Found we had the "VMFS3/EnableBlockDelete" set to 0, when it should be set to 1, so changed it to 1 - Re-ran the unmap command and verified using ESXTOP that delete operations were sent to the storage Now the Storage vMotion has finished, we need to run vmkfstools on the datastore to reclaim the space. PowerCLI, a set of PowerShell extensions for vSphere, is a great tool for automating VMware configuration and management tasks. Over time, the storage volume has experienced a high number of VM deletions and storage vMotions. vmdk.


Anyway here is the crux of the change: In ESXi 5. April 11, 2014 Jordansphere Equallogic. 0 introduced the UNMAP command, and only supported on block storage Does your device support UNMAP? esxcli storage core device vaai status get -d UNMAP is part of thin provisioning feature of the storage array ESXi 5. Now you can list all supported VAAI primitives: esxcli storage core device vaai status get -d naa. The implementation and response times for the UNMAP operation may vary significantly among storage arrays. I don’t have “VMware. Cd to the datastore and volume.


Prepare for a long wait esxcli storage vmfs unmap -l MyDatastore . esxcli storage nfs list Create a virtual machine (VM) on the NFS datastore. Important here is that the “deleted status” is supported. esxcli storage san fc events get •Enables ESXi host to inform the backing storage that files or VMs had be moved or deleted from a Thin Provisioned VMFS datastore •Allows the backing storage to reclaim the freed blocks •No way of doing this previously, resulting in stranded space on Thin Provisioned VMFS datastores 28 UNMAP #SER1143BU CONFIDENTIAL VMworld 2017 Content: Not – Best practice: Use homogeneous storage devices (512n or 512e) as extents for spanned VMFS datastore. To reclaim unused storage blocks on a VMFS datastore for a thin-provisioned device, we need to run the below command from Vmware esxcli storage vmfs unmap --volume-label=volume_label|--volume-uuid=volume_uuid --reclaim-unit=number UNMAP in the Lab. Replace [disk] with the disk name. Here are the details.


0 Update 1 host attached to a Dell Compellent Storage Center SAN. 0 introduced some improvements to UNMAP that facilitated the reclaiming of stranded space from within a guest OS. 5 APIs 10/31/2016 by William Lam 5 Comments Since its first introduction in vSphere 5. 5 Storage Guide that I flipped to get depth about these new features. 0 to allow the ESXi host to inform the storage array that files or VMs had be moved or deleted from a Thin Provisioned VMFS datastore. Before unmap operations we need to determine if the array is supporting it. UNMAP – Reclaim Space on Equallogic via VMware Datastores.


I timed the operation and watched the esxtop data to see the number of UNMAP commands going out and to see the effective UNMAP throughput. Cody wrote about his findings here. Eventually, the thin VMDK may be allocated to the same size as it was provisioned. Here we will look insight of new features that been introduced in VMFS 6. 25 M1 (expected May 2016), the SCSI UNMAP command for Thin Volumes (SCSI Operation Code 42h) is supported. 0 - How to use ESXCLI Commands in PowerCLI. 5 through 6.


There are times I need to run an unmap on my volumes to help free up space that the SAN thinks is still in use. That is what unmap does. I haven’t spend a lot of time looking at VMFS lately. Step 4 - To test the script, you just need to right click on a VMFS Datastore and click on PowerCLI->Execute a Script # esxcli storage vmfs unmap. Comments are disabled for this blog but please email me with any comments, feedback, corrections, etc. For this following commands cab be used from ESXi to determine array capabilities. unmap LucD Oct 23, 2017 1:52 PM (in response to tdubb123) You could try to run these as background jobs, but I'm not sure if the storage system will actually allow you to run an unlimited number of these in parallel.


1. 5: Use esxcli storage vmfs unmap -l Note: the value for the percentage has to be between 0 and 100. Also referred to as SCSI UNMAP, Space Reclaim, or Block Reclaim. 5 VMware changed how UNMAP was executed on the ESXi host. The output includes the file system type, disk info along with the volume name, path and UUID. What you have to do is issuing a command on one of your vSphere hosts to start the UNMAP process. XtremIO VAAI Reclaiming Deleted Storage Reclaiming deleted storage on luns is a straight fotward task.


esxcli storage vmfs unmap command. Resulting free space in the case is here: This can be done on the fly with no impact. I've been scouring and using search and unable to find solution. 5 and then noticed a VMFS section. Block Size - The block size on a VMFS datastore defines the maximum file size andthe amount of space the file occupies. 5 ESXi Host. The operation helps the storage array to reclaim unused free space.


Space reclamation can be done manually by running the esxcli storage vmfs unmap command. 0, UNMAP was run by the vmkfstools –y command, which specified the percentage of blocks that should be freed. storage vmfs upgrade: List all the volumes: esxcli storage vmfs extent list; Check VAAI options for the LUNs: esxcli storage core device vaai status get -d naa. 0, UNMAP is available in the command “esxcli”. This feature was enabled in a manual way for VMFS5 datastores and was able to be triggered when you free storage space inside a datastore when deleting or migrating a VM…or consolidate a Next, after the storage is reclaimed at the guest level, the VMFS LUN must be reclaimed by running esxcli storage vmfs unmap on each LUN manually via the esxi command line. 5 and ESXi 6. Get the “Device Name” of the relevant device, then run: esxcli storage core device vaai status get -d [Device Name] Storage layers.


They have crawlers that will run UNMAP to the various datastores intermittently. Effectively, if you Using vmkfstools to reclaim VMFS deleted blocks on thin-provisioned LUNs (2014849) To recalim the blocks in ESXi 5. The block count specifies how large each iteration is. # esxcli storage vmfs unmap --volume-label=VMSTORAGE1 How to create a cron job in esxi 5. esxcli storage vmfs unmap -u 11111111-2222222e-1b24-c12345678abcd In the command above we are reclaiming free space of the volume “11111111-2222222e-1b24-c12345678abcd”. 5 cluster. In the image below I can see 1100 hits on the DELETE column while I ran the esxcli storage vmfs unmap -l vmware_vswap command.


Granted most customers do not have idle datastores, but if you do, run the manual reclaim (esxcli storage vmfs unmap) which as I said is still supported. It seems that during an ESXi reboot, or during a device ATTACH operation, the ESXi may report corruption. First, power off the affected VMs and log into any ESX server with access to the VMFS datastore which has the VMDKs to shrink. One thought on “ ESXi 5. 1 vmkfstools -y command has to used to initiate unmap operation. 5 – Automating VMFS UNMAP w/ PowerCLI and PowerShell ” sultan May 2, 2018. With vSphere 6.


esxcli storage vmfs unmap

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