What happens if a disk in an ASM diskgroup fails?

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• What happens during a disk check?

  I recently receive messages to run a disk check at the beginning so I wonder what exactly happens during a disk check, how long it takes and what are you doing to stop in an emergency. I would also like to know the consequences of not doing it soon enough and what it does exactly.

  It only checks that each file is correctly written to disk by making sure that record of the file system matches the actual file (for example, the size of the recorded file and the actual size are the same).  It takes a lot of time to read all the files, that is why a CHKDSK process can take several hours (or more).

  CHKDSK scans are not necessary and should not be executed unless your computer has a problem.  The NTFS file system is a file system jounaling which is very resistant to errors and correct them if necessary.  It can handle the delayed write failures and power outages and will schedule controls when necessary. In most cases, running a check of your own is just a waste of time (and the use of unnecessary disk, which will reduce the life expectancy of your hard drive).

  You can finish it safely if you want, simply press Ctrl-C together.

• What happens to iCloud disk files when you reinstall the operating system

  Hello.

  So I thought I use iCloud drive to store files from work because I had to increase 50 GB due to miss the free 5 GB because of photos.

  But my doubt is what happens if my hard drive is going nuts and I install everything... With a new installation, what happens to the files? Download automatically? Or they are deleted on the server (since the new drive iCloud installation folder would be empty)? And can they be backed up with Time Machine? If so, if I get Time machine, it automatically retrieves files from iCloud drive?

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• Adding to the capacity of the disks to existing ASM DiskGroup

  Hi, I have a Production (11.2.0.3) sitting on a RAC LIB 6.3 cluster database platform with storage of ASM and everything works normally, but I'm running out of space in one of disk groups.

  I drive new capabilities to add to this group of disks, but when I run the following command to root OS no entries are returned:

  /etc/init.d/oracleasm listdisks

  If I go into ASMCMD and run lsdsk, I get the following returned:

  / dev/map/oradata

  / dev/map/oraflash

  Also, if I connect to the instance of the ASM of network user name and perform the following steps, I get the following text:

  SQL > select name from V$ ASM_DISKGROUP;

  NAME

  ------------------------------

  DATA

  FLASH

  My question is why /etc/init.d/oracleasm listdisks command returns no results?  Note that I've done the scandisks /etc/init.d/oracleasm on both nodes.

  The disc, I want to add is called/dev/map/oradata2

  When I go to the /etc/init.d/oracleasm/dev/map/oradata2 DATA2 createdisk to create the disc, and run the scandisks on both nodes, I guess the listdisks still not will be able to list the discs of data, Flash and Data2

  My big concern is that when I add create disc on Node1, Node2 might not be able to see the newly created disk when I run the command Scandisks.

  Here, any help would be appreciated.

  Oracleasm will be only the list disks that have been added and marked by using the command "oracleasm createdisk. You can also pay attention to the ORACLEASM_SCANEXCLUDE variable, which can hold devices names oracleasm must ignore. To see the devices in a cluster, your devices must be shared, which is the underlying storage topology.

• How to identify the ASM DiskGroup attached to which disks?

  Hi guys,.
  
  In RAC 11 GR 2, how to identify which ASM Diskgroup is attached to which disks... (OS is RHEL 5.4).
  
  We could list ASM starts by,
  *#oracleasm listdisks * but this command does not display the disks assigned to ASM DiskGroup.
  
  Even for check location of OCR and voting disks only show Diskgroup name and not the actual discs.
  $ocrcheck
  $crsctl query css votedisk
  
  
  (as in gr 10, 2 RAC, we entered /etc/rules.d/udev/60-raw-rules raw file mapping of the OCR, voting disk and other ASM Diskgroup)
  
  
  Please help me, as long as the customer place, I could see LUN as assigned to the server and get is not an exact idea whose records have been used for OCR and voting disk DATA Diskgroup.
  
  
  Thank you
  Manish

  And for this, you can use oracleasm querydisk. Using that you can identify which device marked for asm or not. for example you can see below the example.

  [oracle@localhost init.d]$ sqlplus "/as sysdba"
  
  SQL*Plus: Release 10.2.0.4.0 - Production on Thu Jun 3 11:52:12 2010
  
  Copyright (c) 1982, 2007, Oracle.  All Rights Reserved.
  
  Connected to:
  Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bit Production
  With the Partitioning, OLAP, Data Mining and Real Application Testing options
  
  SQL> select path from v$asm_disk;
  
  PATH
  --------------------------------------------------------------------------------
  /dev/oracleasm/disks/VOL2
  /dev/oracleasm/disks/VOL1
  
  SQL> exit;
  
  [oracle@localhost init.d]$ su
  Password:
  [root@localhost init.d]# /sbin/fdisk -l
  
  Disk /dev/sda: 80.0 GB, 80000000000 bytes
  255 heads, 63 sectors/track, 9726 cylinders
  Units = cylinders of 16065 * 512 = 8225280 bytes
  
     Device Boot      Start         End      Blocks   Id  System
  /dev/sda1   *           1        1305    10482381   83  Linux
  /dev/sda2            1306        9401    65031120   83  Linux
  /dev/sda3            9402        9662     2096482+  82  Linux swap / Solaris
  /dev/sda4            9663        9726      514080    5  Extended
  /dev/sda5            9663        9726      514048+  83  Linux
  
  Disk /dev/sdb: 80.0 GB, 80026361856 bytes
  255 heads, 63 sectors/track, 9729 cylinders
  Units = cylinders of 16065 * 512 = 8225280 bytes
  
     Device Boot      Start         End      Blocks   Id  System
  /dev/sdb1               1        4859    39029886   83  Linux
  /dev/sdb2            4860        9729    39118275   83  Linux
  [root@localhost init.d]# ./oracleasm querydisk /dev/sdb1
  Device "/dev/sdb1" is marked an ASM disk with the label "VOL1"
  [root@localhost init.d]# ./oracleasm querydisk /dev/sdb2
  Device "/dev/sdb2" is marked an ASM disk with the label "VOL2"
  [root@localhost init.d]# ./oracleasm querydisk /dev/sda1
  Device "/dev/sda1" is not marked as an ASM disk
  [root@localhost init.d]#
  

  Also in windows:

  C:\Documents and Settings\comp>asmtool -list
  NTFS                             \Device\Harddisk0\Partition1           140655M
  ORCLDISKDATA1                    \Device\Harddisk0\Partition2             4102M
  ORCLDISKDATA2                    \Device\Harddisk0\Partition3             4102M
  NTFS                             \Device\Harddisk0\Partition4           152617M
  
  C:\Documents and Settings\comp>
  

  answered by Alex.
  Reference:-How to identify what disc rawdevice is named as VOL1 in ASM OS level

  Happy new year.
  Kind regards

• What happens if Disk Defragmenter is stuck on the 2 relocated pass

  What happens if Disk Defragmenter is stuck on 2-69% pass moved?

  Hello

  ·         What operating system do you use?

  Method 1:

  I suggest that you can run the disk check and check if you can perform disk défragmenterez.

  Check a drive for errors

  http://Windows.Microsoft.com/en-us/Windows7/check-a-drive-for-errors

  Method 2:

  Try disk clean and check if it helps:

  Delete files using disk cleanup

  http://Windows.Microsoft.com/en-us/Windows7/delete-files-using-disk-cleanup

  Method 3:

  If the problem persists I suggest you to put your system to boot and check if it works:

  How to troubleshoot a problem by performing a clean boot in Windows Vista or in Windows 7

  http://support.Microsoft.com/kb/929135

  Note: After troubleshooting, be sure to set the computer to start as usual as mentioned in step 7 in the above article.

• What happens to your computer when you compress your old files when running disk clean

  What happens to clean your computer when you compress your old files when running disk?

  Why is it you would compress the files while running a cleaning disc?  http://www.help2go.com/Forum/computer-help/105414-compressing-old-files-disk-cleanup.html

• What happened to my 10 GB of free space on the disk?

  I don't really know... Yesterday, I deleted a lot of films and albums of music from my pc and I am very sure that after I emptied the recycling bin, I had more than 31 GB of free space on the disk. But now... after that I just turned on my pc to start by knitting I noticed that my changed only 20.9 GB HDD space... what happened to the other 10 GB? No, I did not commit a any error with what I pressed on to empty the recycling bin and I even run windirstat just to check everything and I saw nothing wrong with all my files...

  IM using windows 7 ultimate sp1 with 100 GB hard drive (no partitions) 2 GB ram and 2.3 ghz cpu

  Hello

  Thanks for posting your query in the Microsoft Community Forums.

  I understand from the description of the problem, that after deleting a few files of the computer, the hardware space shows 20.9 GB despite 31 GB in Windows 7 computer.

  I understand this must be frustrating, but don't worry, we're here to help and guide you in the right direction.

  I suggest you try these methods and check if it helps.

  Try logging in SafeMode with network and check if the problem persists. If the problem is resolved, perform the scan anti-virus in SafeMode with network.

   

  Method 1

  Step 1

  Start your computer in safe mode with networking.

  http://Windows.Microsoft.com/en-us/Windows-Vista/start-your-computer-in-safe-mode

  Note: When, at the forefront of startup options select safe mode with network.

   

  Step 2

  I suggest you scan your computer with the Microsoft Security Scanner, which would help us to get rid of viruses, spyware and other malicious software.
  The Microsoft Security Scanner is a downloadable security tool for free which allows analysis at the application and helps remove viruses, spyware and other malware. It works with your current antivirus software.
  http://www.Microsoft.com/security/scanner/en-us/default.aspx
  Note: The Microsoft Safety Scanner ends 10 days after being downloaded. To restart a scan with the latest definitions of anti-malware, download and run the Microsoft Safety Scanner again.
  Note: The data files that are infected must be cleaned only by removing the file completely, which means that there is a risk of data loss.

   

  Method 2

  Reduce the number of unnecessary files on your hard disk to free up disk space and help your computer run faster, use disk cleanup. It removes temporary files, empty the Recycle Bin, and removes a variety of file system and other items that you no longer need.

  http://Windows.Microsoft.com/en-in/Windows7/delete-files-using-disk-cleanup

  It will be useful.

  Let us know if you encounter problems with Windows in the future. We will be happy to help you.

• What happens on the free space of disks defragmenting the disc.when I used it is reduced. is this real case for all systems?

  What happens on the free space of disks defragmenting the disc.when I used it is reduced. is this real case for all systems?

  Defragmenter free space but can free report incorrect running after the space.

  Run disk cleanup before defragmenting...

• What happens if the PC I just downloaded Itunes on & connected to, does it display not all devices?

  What happens if the PC I just downloaded Itunes on & connected to, does it display not all devices?

  Hello 2sealadies!

  Thank you for joining the communities Support from Apple! Looks like you have a problem with your iTuens on Windows 10 not to recognize your iPhone. I know how important it is that the iPhone is recognized by iTunes. Read this article with steps If iTunes does not your iPad, iPhone or iPod. Specifically, after the first series of measures:

  If you are using a Windows PC

  1. Open Device Manager by following the steps for the version of Windows that you have:
     • Windows 10: Click the search box in the lower left corner, type Device Manager and press ENTER. In the list under Bus USB controllers, find the Apple Mobile Device USB Driver.
     • Windows 8: loose in the right edge of the screen. Press search and enter the Manager devices, and then click Device Manager. If requested, enter your password. In the list under Bus USB controllers, find the Apple Mobile Device USB Driver.
     • Windows 7: click on > Control Panel > system and Maintenance > Device Manager. If requested, enter your password. In the list under Bus USB controllers, find the Apple Mobile Device USB Driver.
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  The pilot and
  No symbols

  A down arrow
  by the driver

  Exclamation or
  question mark by
  the pilot

  No Apple Mobile
  USB device driver

  You don't see symbols next to the Apple Mobile Device USB Driver

  If you do not see , , or of the Apple Mobile Device USB Driver, look for third-party software conflicts. Then if you still need help, restart your Apple Mobile Device Service or contact Apple technical support.

  

  You see an arrow down

  If you see next to the Apple Mobile Device USB Driver, the driver with the right mouse button and choose enable from the context menu. Then if you still need help, contact contact Apple technical support.

  

  You see an exclamation point or question mark

  If you see or the Apple Mobile Device USB Driver, right click on the entry, then manually update the Apple Mobile Device USB driver.

  

  You do not see the Apple Mobile Device USB Driver

  1. Disconnect your device from your computer.
  2. Save a screenshot by pressing the Home button and sleep/wake button of the device button at the same time. The screen should Flash briefly.
  3. Reconnect your device to your computer.
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     • Other devices
     • Portable devices
     • USB Bus controllers

  Now, locate the entry that recognizes the device as a camera. You should see 'Apple IPhone', 'Apple iPad' or 'Apple iPod '. Right-click the device entry, and then manually update the Apple Mobile Device USB driver.

  If a single unknown device appears, follow these steps:

  1. Right click on the unknown device entry.
  2. Choose Properties from the context menu, and then click the Details tab.
  3. In the drop-down menu, select hardware IDS.
  4. If the ID begins with something other than USB\VID_0000 & PID_0000, go into the Device Manager and right click on the entry for device unknown, and then manually update the Apple Mobile Device USB driver.
  5. If the ID begins with USB\VID_0000 & PID_0000, then follow the remaining steps.
  6. Unplug the unit and remove all the USB devices on the computer.
  7. Shut down the computer, and then turn it back on.
  8. Reconnect the device, tests of each USB port for about 30 seconds to see if the device is recognized.
  9. Test with a different, checked 30-pins-USB or the lightning-connector-cable-USB, if they are available.

  If you still need help, contact Apple technical support.

  

  Manually update the Apple Mobile Device USB driver

  If one of the sections above directs you to this section, you should already have right click on an entry in the Device Manager. Now, follow these steps:

  1. Choose update driver software.
  2. Choose "Browse my computer for driver software."
  3. Choose "Let Me pick from a list of drivers for devices on my computer.
  
  
• Click the disk button. If this is not available, choose a category of devices such as Mobile phone or storage device, if in the list.
• Click Next. You should see the disk button.
• Click Browse and navigate to C:\Program Files\Common Apple Mobile Device Support\Drivers.
• Double-click the file "usbaapl. If you have a 64-bit version of Windows, this file will be called "usbaapl64". If you do not see here "usbaapl64" is not a Drivers folder, look in C:\Program Files (x 86) \Common Files\Apple\Mobile Device Support\Drivers.
• In the disc window, click Open, and then click Next and then click Finish.
• Windows installs the driver. If a message indicates that the software that you install "not passed the Windows Logo test", click on continue. You can get help with other common errors and the error code numbers in this Microsoft article.
• Open iTunes to make sure that iTunes recognizes your device. If not, Restart the Apple Mobile Device Service.

See you soon!

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  Please send Bravo