https://bugzilla.novell.com/show_bug.cgi?id=754061 https://bugzilla.novell.com/show_bug.cgi?id=754061#c0 Summary: release-notes für hyper-v und Win8 Classification: openSUSE Product: openSUSE 12.1 Version: Final Platform: Other OS/Version: Other Status: ASSIGNED Severity: Major Priority: P5 - None Component: Release Notes AssignedTo: ke@suse.com ReportedBy: ke@suse.com QAContact: coolo@suse.com CC: ohering@suse.com Depends on: 754041 Found By: Documentation Blocker: --- +++ This bug was initially created as a clone of Bug #754041 +++ Olaf says: Add after "11.4 Hyper-V": ... <!-- bnc#754041 --> <section> <title>Formatting Large Disk Partitions on Windows 8 Server</title> <para> Installing a guest hosted on Windows 8 Server may fail when a large virtual disk image (larger than 50 GB) in <literal>.vhdx</literal> format is assigned to the guest. To workaround this issue use either virtual disk images with a fixed size, or create the dynamically sized disk image using Powershell. </para> <variablelist> <varlistentry> <term>Technical Background about the Issue</term> <listitem> <para> The <literal>.vhd</literal> and <literal>.vhdx</literal> images are sparse files. When a dynamic <literal>.vhdx</literal> is created with a maximum size of 127 GB, the initial size is about 256 KB. Because the default block size for <literal>.vhdx</literal> files is 32 MB, writing one 512 byte sector will result in a 32 MB section of the sparse file being allocated. When <literal>ext3</literal> is allocating the MBR, the super block, the backup super blocks, inodes, directories, etc., space is being allocated in the sparse file. Because of <literal>ext3</literal>'s suboptimal IO, how the data structures are laid out on disk, and the default block size, a large partition of the <literal>.vhdx</literal> file is allocated just by formatting. The workaround is to create a <literal>.vhdx</literal> file with a 1 MB block size rather than the default 32 MB. </para> <para> Changing the block size in the UI is not implemented. It can only be changed when the VHDx file is created through Powershell. To create a VHD with a modified block size, use this Powershell script (all in one line): </para> <screen>New-VHD -Path C:\MyVHDs\test.vhdx -SizeBytes (127GB) -Dynamic -BlockSizeBytes (1MB) -VHDFormat vhdx</screen> </listitem> </varlistentry> </variablelist> </section> -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.