Space management and snapshot size

Similar Questions

• Storage and snapshot space views

  Hi all

  Among the new features of vSphere is the tab "storage views."  Click on an object in vCenter (for example, a cluster) and then click on the tab "storage views."

  This tab includes useful information on the topic, including the amount of snapshot space which currently consumes each VM.  This is a great way to eyeball a cluster quickly and see what virtual machines are currently a snapshot.

  My question is not a big problem - more a curiosity.  When I look at the tab "Storage views" I can see all virtual machines running on this group.  None of my virtual machines currently have a snapshot.  However, the amount of snapshot displayed for each virtual computer space varies.  Even say 1.08 KB, others say 633 B etc.  About three quarters of my virtual machines have a very low value like this (1 KB or less) with the remaining quarter actually list 0 B.

  I would have thought that any virtual computer without a snapshot must be 0 b.

  As I said, this isn't a big problem - just a curiosity.  It is still pretty easy to tell who the virtual machines have a real snapshot that you can ignore all those containing 1 KB or less space snapshot.  I expect always all VM without a snapshot to show 0 B well and I consider it a (minor) bug.

  Does anyone else get these strange numbers?

  See you soon,.

  David

  Did a little research on our environment and I think I know what you saw, we have a few shots in our environment but also show some VMs who have no snapshot with the display of 1.08 KB on the view of storage under use of snapshots, then I guess that its getting this information based on files located in the directory of the virtual machine. What I found to a specific VM has been there is a filed with an extension called .vmsd that contains the metadata about snapshots, also defined on VMwares Web site: http://www.vmware.com/support/ws5/doc/ws_learning_files_in_a_vm.html

  The size of the meta file:

  [root@himalaya Quentin]# ls -lha | grep .vmsd
  -rw------- 1 root root 1.1K Jul 12 08:18 Quentin.vmsd
  

  This metafile looks like the following (which I remember creation but via the CLI):

  [root@himalaya Quentin]# cat Quentin.vmsd
  .encoding = "UTF-8"
  snapshot.lastUID = "127"
  snapshot.numSnapshots = "0"
  snapshot.current = "0"
  snapshot0.uid = "127"
  snapshot0.filename = "Quentin-Snapshot127.vmsn"
  snapshot0.displayName = "BackupShot"
  snapshot0.description = "Snapshot for Backups"
  snapshot0.createTimeHigh = "290435"
  snapshot0.createTimeLow = "-1325916361"
  snapshot0.numDisks = "1"
  snapshot0.disk0.fileName = "Quentin.vmdk"
  snapshot0.disk0.node = "scsi0:0"
  
  snapshot.needConsolidate = "FALSE"
  
  snapshot1.uid = "101"
  snapshot1.filename = "Quentin-Snapshot101.vmsn"
  snapshot1.parent = "100"
  snapshot1.displayName = "Snapshot-2-8:45"
  snapshot1.description = "8:45am snapshot"
  snapshot1.createTimeHigh = "287640"
  snapshot1.createTimeLow = "-1172553953"
  snapshot1.numDisks = "2"
  snapshot1.disk0.fileName = "Quentin-000001.vmdk"
  snapshot1.disk0.node = "scsi0:0"
  
  snapshot0.type = "0"
  
  snapshot1.type = "1"
  
  snapshot0.disk1.fileName = "/vmfs/volumes/48e91a93-a0a8d3bf-f831-003048670887/Quentin/Quentin.vmdk"
  snapshot0.disk1.node = "scsi0:1"
  
  snapshot1.disk1.fileName = "Quentin-000002.vmdk"
  snapshot1.disk1.node = "scsi0:1"
  

  I also look at other virtual machines that are not instant and the size is more properly associated with it real snapshot deltas, although virtual machines without the clichés that the size of the .vmsd seems to fit with what is shown in the view of storage that you noted, these virtual machines have no snapshots. I think that if a virtual machine has snapshots at any given time and was afflicted with consolidation or remove, the .vmsd could not have been cleaned and then used as a benchmark as "thinking that it snapshots and uses the file size of the .vmsd.

  This hypothesis was fairly easy to test, what I did to remove Quentin.vmsd (the virtual machine has been turned off, may want to be careful when his online) and what you need to do, is not to update the display of storage, but go to the virtual abstract machine and do a refresh on the use of the storage. This will refresh the specific data store on which this VMs lived on and if you return to the storage view and put a refresh/update, you will notice that the size of the snapshot goes to 0bytes now, which is pending.

  So I think that explains which continues, perhaps a quirk or expected behavior. Yet once again, I agree that suits you just look for the use of delta< 1gb="" for="" real="" snapshots="" or="" you="" can="" always="" go="" in="" and="" clean="" up="" the="" .vmsd="" files="">

  =========================================================================

  William Lam

  VMware vExpert 2009

  Scripts for VMware ESX/ESXi and resources at: http://engineering.ucsb.edu/~duonglt/vmware/

  repository scripts vGhetto

  VMware Code Central - Scripts/code samples for developers and administrators

  http://Twitter.com/lamw

  If you find this information useful, please give points to "correct" or "useful".

• I want to view the properties of folders of files and the size of the files used on the right by clicking on them and the properties of the workstation to see the disk space used. __

  I have trouble finding the disk space used by files and folders individually and when I try to know how much is consumed and free by right click on my computer.  This was easy in XP, but I can't get the answers I need to analyze which uses space, where and how.  What is happening with this?

  Hi NativeLegal Eagle,

  Usually, right-click on the file or folder and clicking the properties option will give the details of the file or folder. The details include, type, size, location, size of the file on the disc etc.

  Make a right click on my computer will not give the details of available disk space on the computer.

  If you want to know the amount of space consumed by a program, then it can be found in the Add/Remove Programs window.
  a. Click Start, click Run, type appwiz.cpl, and then click ok.
  b. in the list, we can find the total space used by individual program running on the computer.

  Note: If nothing is listed in the file properties window or a file, then provide us with more information, so that we can better help you.

  Visit our Microsoft answers feedback Forum and let us know what you think.

• Reinvest a presentation Manager and detect any changes in size

  Hello

  I am trying to create a user interface that mixes elements I draw myself with native widgets and I do this by substituting the painting and drawing to an image in the background before drawing the fields themselves.

  To position the fields, I created my own Manager and position fields in absolute position based on my own component positions. For the base case works very well...

  When I type in a field, it grows, I do not detect this growth so I can not ebb the user interface. How can I detect a change to the default size of the field? I followed the field muddy/Sales status but that doesn't seem to help here is a picture of my test case, white in the middle is a native field and find it me difficult to follow its growth in real time:

  

  When I start the native UI scroll fields remain in place, I tried calling invalidateLayout, but it throws an exception? How to trigger the IU blackberry to call sublayout again?

  That's what I mean fields are now on top of my drawn text box:

  

  Thank you

  Shai.

  Yes, I noticed that you implement LWUIT. Two big thumbs up!

  First of all - don't spend just a new Manager (...) as a parameter in your full screen (I hope you meant that when you wrote FullCanvas).  Create a handler that is personalized with its own sublayout() and do the work there. In this way, you will be able to instantiate this Manager custom rather than writing the same code over and over again.

  Second - substitute object it inside the Manager, not the screen.  Not necessary, but once again - for the best control.

  Third - It's weird that sublayout of your Manager is not called automatically, but you can force it anyway:

  // in your MyClass:
  protected void sublayout(int width, int height) {
    layoutDelegate(width, height);
  }
  

  Have not tested but it should work.  This way, you should be able to rearrange and re - position your fields in the same manager that has all the knowledge, he needs.

  One problem remains, though - how are you going to partially show these fields when they slide to the edge of the screen?  I hope that you can set negative positions for them. Documentation for the manager class specifies all IllegalArgumentException on negative x and y in setPositionChild, so you might be lucky .

• Memory and snapshot management

  Where can I find detailed information on memory and snapshot management in VMware workstation?

  Memory:

  • How memory is allocated in the host PC?
    
  • If I sart a guest VM with 2 GB of RAM with 500 MB of RAM on a host PC with 3 GB of RAM, the amount of memory is allocated on the host?
    
  • What should happen if I start more guest VM and the amount of memory is the memory available on the host PC?
    

  In summary:

  • How are managed snapshot all the view host to PC file system?
    
  • What is the role and the content of the files being created whenever I take a snapshot?
    
  • What is - that supposed to happen if I delete a file containing a snapshot (file, not the snapshot)?
    

  Concerning

  Marius

  • 1. how memory is allocated in the host PC?
  • 2. If I sart a guest VM with 2 GB of RAM with 500 MB of RAM on a host PC with 3 GB of RAM, the amount of memory is allocated on the host?
  • 3. what should happen if I start more guest VM and the amount of memory is the memory available on the host PC?

  • 4. How are all managed snapshot view host to PC file system?
  • 5. What is the role and content of the files being created whenever I take a snapshot?
  • 6. What is - that supposed to happen if I delete a file containing a snapshot (file, not the snapshot)?

  1. that costs on the settings in your config.ini file
  2. the host can use somethiong between 2200 MB and a few MBs - depends on config.ini
  3 the host said 'not possible' either the virtual machine starts - with extreme settings, you can allocate 5 x physical RAM available to your virtual machine

  4 and 5.

  vmsd-file = list used by the customer snapshots
  VMSN-file = settings and configuring the host when the snapshot was created
  00000*.vmdk = file does the actual data of the snapshot

  6. cannot be predicted: anything can happen: System can be will start more or healthy - so NEVER do this

  > Should I expect to use as much RAM on the host computer as the sum of memory configured all virtual machines of comments?

  again it depends on your config.ini file settings - if twist you config.ini for better performance, then the answer is YES

  a few good things to read http://faq.sanbarrow.com/index.php?action=artikel&cat=78&id=76&artlang=en

• Vista Shrink volume resulted in 75 lack space volume and 0 GB unallocated space. No possibility of partition. Lost space.

  I wanted to create a partition on a 150 GB internal hard drive. It is NOT the boot drive, it's the drive D. I got more than half the volume free and retractable Vista specific volume I could use up to 90 GB. I selected 75GB for the shrink.  After the SHRINK, it resulted in 75 lack volume and space 0 GB unallocated space for the partition. Volume shrinkage has returned an error and did not provide additional instructions. Unfortunately, I don't have the error message as I deleted it by mistake. It was a small error message in Shrink.

  VISTA 32-bit, updates to update... I just downloaded EASEUS Partition Master and it shows I have 150 GB of total space, unused and 0 free 90 not allocated. Looks like the problem doesn't show in the view "Properties..." (75 GB of total space, 15 GB free unused).  I don't know what the file system will be used to allocate new space. I think I'll try to copy a large file and see which uses the file system...

  When I look at the following:
  Computer management, storage,... disk management it says I have: Simple, Basic, disk 1, disk Local (d) 150 GB, NTFS, healthy (Primary Partition). (NO unallocated space appears on this menu)

  When I look at the properties of the D: drive:
  Local disk (d :)) 75 GB of capacity.

  I just lost 75 GB! Help...

  I don't know what happened. Shrink did not partition instructions... The space is lost forever?

  When you shrink a volume you create unallocated space which should appear in computer management - I don't know why it is not appear on your system.

  Maybe you can try to expand the volume to find the size of the original score (although it will wipe the data that is on the drive): http://www.howtogeek.com/howto/windows-vista/resize-a-partition-for-free-in-windows-vista/. (but I doubt it will work because there is no contiguous unallocated space appear).

  Here is another article on how to shrink and expland a partition under Vista.  Perhaps by reading the instructions for the narrowing, you will notice something did you not (or has done, but shouldn't have).  Otherwise, extend the partition could reclaim your lost space.  http://www.bleepingcomputer.com/tutorials/tutorial133.html.  Yet once again, because there is no unallocated space appear, I don't know if it will work (in fact, I don't think it will be).

  My best suggestion is to temporarily store the data on the disk also narrowed and then format the drive.  This should bring back to his full 150 GB and then you can try it again narrows (if you are still interested in this).

  I hope this helps.

  Good luck! Lorien - a - MCSE/MCSA/network + / A +.

• DBA_EXTENTS and ONE SIZE

  Hi all

  I am confused with the value returned by dba_extents:

  In my case, I have a LMT with this definition of storage:

  MANAGEMENT UNIFORM LOCAL 40K SIZE MEASURE

  8K BLOCKSIZE

  SEGMENT SPACE MANAGEMENT MANUAL

  
  I'm waiting for my next extensions are with size 40K

  Yet, they are not:

  Select * from dba_extents a

  where A.TABLESPACE_NAME = 'X '.

  EXTENT_ID	FILE_ID	BLOCK_ID	BYTES	BLOCKS
  37	672	635548	4031078400	492075
  36	672	128	2687385600	328050
  35	617	9	1791590400	218700

  ....

  ....

  And the same extent_id got multiple rows in dba_extents?

  EXTENT_ID, FILE_ID, BLOCK_ID BYTES BLOCKS RELATIVE_FNO

  17 321 121065 29491200 3600 321

  17 152 102422 29491200 3600 152

  17 152 58667 29458432 3596 152

  17 11 36432 29491200 3600 11

  17 308 45452 29491200 3600 308

  17 351 2240 29458432 3596 351

  17 152 52822 29491200 3600 152

  17 308 76952 29458432 3596 308

  17 152 98822 29491200 3600 152

  17 351 243306 29458432 3596 351

  17 308 69451 29458432 3596 308

  17 152 49222 29491200 3600 152

  No explanation for this?

  Thank you.

  I would have found the answer in Metalink note:

  ALLOCATION_TYPE in DBA_TABLESPACES tells the well-managed USER locally (Doc ID 182679.1)

  and

  Note: 120061.1 Size following measure after migration Tablespace to dictionary to locally managed

  QUESTION:

  Why the table continues with the next measure specified even if

  It is a locally managed tablespace.

  ANSWER:

  Migrated tablespaces are not subject to the UNIFORM/SYSTEM policy of newly

  created locally managed tablespaces. It would be too difficult to implement,

  Since storage space is likely to contain the existing objects already

  violate the new policy. For this reason, migrated tablespace support only the same

  policy as the dictionary of tablespaces. If you select from

  DBA_TABLESPACES, you should see "USER" value in the column ALLOCATION_TYPE for

  migrated tablespaces and UNIFORM or SYSTEM value in tablespaces that were

  also created locally managed.

  Therefore, the user does not receive the benefits of migration policy, but can

  still don't get the benefits of performance - no ST enqueue contention and more effective

  measurement operations.

• Photosmart 5524 eprint from an iPad - how to manage the print size &amp; culture

  Hi, very new to this malarkey eprint, you set printer in place and it is printing fine, but how the final print size is not managed and harvest? I lost a lot of paper and ink trying lots of different things... There must be an easier way?

  I have some photos of squares I tried printing... The printer fills them on page a4 but chops the sides off... I recreated the image with white extra borders and it is now very small printing! Arrrrrrrgh!

  Any help would be appreciated!

  Hi there, you are using the print application mobile ePrint or solution AirPrint to print from the iPad? If you want to have the ability to customize print settings I advise to use the print application mobile ePrint. Here is the link to the app in iTunes https://itunes.apple.com/us/app/hp-eprint-home-biz/id299531647?mt=8

  Once installed on your device you just open the application, select the photo to print and press the settings icon in the top right which will allow that you select paper sizer and orientation, among other things.

  Best.

• file and folder size

  Hi, I'm working on a new computer Sunrise and execution including obtaining my backups before day of the load on my new computer.  When comparing a few folders on the hard drive of my main computer, last night made backups don't always correspond to the size and number of files, at least in some cases, but not all.

  I use XP on the old system and my backup hard drive is a Seagate.  There are plenty of room on my Seagate for even more data.

  For example, my main computer indicates a file like: 168 concerts and 47781 files while the backup shows 167 concerts and 45623.  Another folder on my main computer will display: 657 megs and 45 files while the backup shows 647 megs and the same 45 files.

  Can you explain this for me and if there is a way to check that all my information is actually saved properly?  Also, would you recommend the reset of my program to select all the files I want to save as a new start and then, by running another backup backup?  Thank you

  There may be several things happening here.

  First, make sure you that you compare 'size' of the folder on a drive in the folder 'size' on the other disk and not "size of the folder on the drive."

  "Size on disk" is very often not the same as the 'size' (it's usually larger).  This is because the files are stored in "clusters" of a fixed number of bytes.  There is only one file per cluster and so there is almost always unused space.  This is called "soft"

  Cluster size represents the smallest amount of disk space that can be used to hold a file. When the size of the files does not come out to an even multiple of the cluster size, extra space must be used to hold the file (up to the next multiple of the cluster size). On the typical disk partition, the average amount of space that is lost in this way can be calculated using the equation (cluster size) / 2 * (number of files).

  For example, suppose that you have 12 ounces of water and only 10 ounces cups.  You need two cups - 20 ounces of "storage" - to hold all the water, and one of them is essentially empty.  On the other hand, if you had 4 oz. cups, you would need three cups - 12 oz of "storage" - and would have no unused space.

  Cluster size differs between the various files used by Windows systems.  Most use facilities XP NTFS file system, which has a cluster size default to 4 096 bytes (4 KB) for partitions up to 16 TB.  The FAT file system on the other hand, uses a clusters of 512 bytes and 1, 2, 4, 8, 16, 32, or 64 KB depending on the size of the partition.

  External number of readers is preformatted using the FAT file system.  So if you compare "size on disk" and the internal drive uses NTFS and the backup drive uses FAT, there almost certainly will be a different size "on the disc" between the two.

  In your first example (168 GB file), it seems that you can not have guaranteed some hidden or system files.  What software do you use to make the backup?

  Most of the good software backup has an option to "check".  Exactly what he is "verified" may be different for different applications, but if it is available in the software you have, you have to use.

• In XP, what are the default fonts and font sizes by default under advanced appearance for these items listed below?

  What are the fonts by default and default font for these options size? I've changed them - problems. Also why can't you post a record of original fonts for users of xp with all the fonts required default? It helps users strongly tempted to extract did not work properly.
  Need default font and size for each Option below
  3D objects
  Desktop
  Caption button
  Title bar active for example. (Arial - 8) or NA if nothing
  Resident of the active window
  Context of the application
  Title bar inactive
  Inactive window boarder
  Icon
  Title bar inactive
  Menu
  Message box
  Palette title
  Scroll bar
  Selected items
  ToolTip
  Windows
  Icon spacing:
  Icon spacing V
  Thank you

  Hi Scott,.

  If you change the settings in display properties, you can change it to default by selecting the Windows XP default theme. This will change all default Windows fonts and their sizes.

  To do this, follow these steps.

  a. right click on an empty space on the desktop and then click Properties.

  b. on the themes tab, click Windows XP in the theme box.

  c. click OK.

• Segment space management unclear points

  Hello, community!

  Some time ago my students (basic course Oracle DB) is facing a problem to understand the theme of the management of space Segment with two types

  for tablespace management: dictionary and successful Local. When I read in some documents (11 GR 2 Concepts, Administrator's guide and a few notes of MOS) I was a little confused. Let me explain the situation:

  Locally managed tablespaces using bitmaps to manage the free space. Bitmaps are located in the headers of data files.

  Automatic Segment space management also uses bitmap images (what is called 'bitmap freelists'), but there is no info on where are the present bitmaps. I can guess that they are found in the headers of the sectors to present, but there is no confirmation.

  So the question is:

  Are present two types of bitmaps bitmaps of same? If not, where are they located? What is the structure of this bitmap?

  The best answer will be a link to a doc or a MOS score.

  Thank you in advance!

  You have a good reference document for the tablespace bitmaps - but intestingly is not a very good job of describing the bitmaps of space segment.

  The bitmaps for the management of the space segment are in the segment itself. usually appearing as the first blocks in the segment before the segment header block.  Tanel Poder I have good presentation on them some time ago: the following link opens as a powerpoint presentation: http://blog.tanelpoder.com/files/Poder_Freelists_vs_ASSM.ppt

  Concerning

  Jonathan Lewis

• vCloud and heap size

  Hello

  looked at this article yesterday

  http://KB.VMware.com/selfservice/microsites/search.do?language=en_US & cmd = displayKC & externalId = 1004424

  I'm under ESX with vcloud 5.1 5.1. The default size of the heap 8TB refers to the space put into service or used when virtual machines are turned on? And it's a collective number - so the total number of virtual machines with 8 TB of disk not not a VM limit?

  Thank you

  The limit is for all the under voltage virtual machines on a single host.

  According to my experience, it has neither the service, implemented or used space - I think you can get away with a slightly higher use the limit would allow you, if you do not touch parts of the disc. Certainly, he's not only the space used, and we found that the space put into service is a good approximation to calculate when we will hit the limit.

  NFS and RDM are not affected by this limit.

  As far as I know, there are most certainly in VMFS5 where it is probably worse, because the block size should be 1 MB. VMFS3, you could use a block size of 8 MB and extend the limit x 8.

  If someone has any info on when it would be fixed, I'd be happy to know...

• vCenter 5.1 having issues with snapshot size alerts

  Hello world
  I have a problem regarding the sending of alerts by e-mail when vm snapshot size exceeds a certain size. (in fact, any size with problems)

  She doesn't send traps, ignoring what I did come in like it size and spamming my Inbox.

  Go to alerts vcenter - new alarm - monitor: VMS - monitor specific conditions or State...

  Trigger: Condition: above

  Size of Snapshot in VM (GB): WARNING: level 1

  Snapshot in VM (GB) size: alert level: 2

  Send email to: myself

  When I click on ok. I have tons of emails from vcenter which all my virtual machines exceeded the size limit of 1 GB instant! (but he doesn't based on storage views)

  Then I put the level to 10 GB makes no sense. It keeps me spamming all my virtual machines with snapshot size exceeded.

  This setting worked well with vcenter 5.0 because I upgraded to vcenter 5.1, this problem appeared. Note that I have 2 vcenters, two of them having the same problem.

  Please see the attached photos.

  VCenter version: 5.1 build: 880146 running on windows server.

  Would you kindly try to put the same trap and let me know if this is a bug or not?

  Thank you all happy new year

  It is a known issue with vCenter Server 5.1 (VM Snapshot size (GB) alarm incorrectly triggers on VMS with no snapshots (2037464)), which - according to http://www.vmware.com/support/vsphere5/doc/vsphere-vcenter-server-510b-release-notes.html - does not seem to have been resolved with the last 5. 1 b version.

  André

• Automatic Segment space management

  Version: 10.2, 11.2

  Platform: Unix, Linux flavors

  Question1.

  Googling, I think that the SAMS (automatic Segment space management) is a new method used by Oracle to manage space inside the block of data. If this is the case, then it should have been named «Automatic block space management» Right?

  Question2.

  What has been the most notable advantage in your opinion using SAMS as manual space Segment opposed management?

  Hi Max,.

  > I understand that the SAMS (automatic Segment space management) is a new method used by Oracle to manage space inside the data block

  New? SAMS has been implemented with Oracle 9i... so I would not call this 'new '.

  > If this is the case, it should have been named "automatic block " Space management "." Right?

  If a block is marked as free or full is not managed in the data frame itself. It is managed by bitmaps in the segment (Yes, this data is stored in blocks, but some more special). Details are provided in the presentation of Tanel Poder here: Poder_Freelists_vs_ASSM.ppt

  > What has been the most notable advantage in your opinion using SAMS as manual space Segment opposed management?

  It depends on. Some say it is easier to administer, others may say that it solves problems of simultaneity by default (without manual intervention). Personally, I see two advantages, but unfortunately, you will have also some negative side effects with all the features (such as SAMS nasty bugs or nondeterministic behavior of distribution of data, etc.). So, it's still you and your targets and how the application interacts with the database of course.

  Concerning

  Stefan

• In any case, to get space ESX and ESXI servers disk root partitions?

  I just wanted to see if there was a simple script I could run to check disk space on local servers - space not logic unit number. We had a situation where the root partition has been completed and caused a problem. I was wondering if there was a way to check using Powercli

  Cheers in advance!

  Have you ever had a glance at monitoring of the use of the ESX host storage (for example: / var/log) with PowerShell ?

  Condition that sudo is configured correctly on the ESX Server, it uses plink.exe to establish an SSH connection to the ESX Server and then executes a "df" for file systems and their size.