VirtualBox

Changes between Initial Version and Version 1 of Ticket #4649


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Timestamp:
07/30/09 14:39:27 (5 years ago)
Author:
frank
Comment:

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  • Ticket #4649 – Description

    initial v1  
    1  
    2 The SATA emulation seems to ignore the flush() request to the drives 
    3 both RAW and file based. 
     1The SATA emulation seems to ignore the flush() request to the drives both RAW and file based. 
    42 
    53This leads to DATA LOSS (and filesystem loss) this is espically dangerous 
    64for Filesystems that are transcationally based eg ZFS. This can lead to 
    75loss of the whole filesystems. It could also be the cause of a number of 
    8 issues with journalled filesystems(NTFS ext3 etc).  
     6issues with journalled filesystems (NTFS ext3 etc). 
    97 
    108When the guest calls the flush() call the emulation should call the  
     
    1210 
    1311For the discusion on ZFS 
    14 you might look at this http://www.opensolaris.org/jive/thread.jspa?threadID=108213&tstart=0  and this for the IDE discusion: http://forums.virtualbox.org/viewtopic.php?f=8&t=13661&start=0  
     12you might look at [http://www.opensolaris.org/jive/thread.jspa?threadID=108213&tstart=0 this] thread and [http://forums.virtualbox.org/viewtopic.php?f=8&t=13661&start=0 this] thread for the IDE discusion. 
    1513 
    16 (the IDE emulation also does this but, I believe, can have it disbaled with:VBoxManage setextradata VMNAME "VBoxInternal/Devices/piix3ide/0/LUN#[x]/Config/IgnoreFlush" 0 ) 
     14(the IDE emulation also does this but, I believe, can have it disbaled with:[[BR]]''VBoxManage setextradata VMNAME "VBoxInternal/Devices/piix3ide/0/LUN#[x]/Config/IgnoreFlush" 0'' ) 

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