[Bug 574665] Re: kvm + virtio disk corrupts large volumes (>1TB).

[Steven Wagner]

As mentioned in comment #3, could this be related to a specific SATA
chipset?  I have a Intel 82801JI ICH10 SATA AHCI Controller, and have
experienced random disk corruption on guests. Guests are both Linux and
Win2k3. High usage on the sata controller seemed to be the trigger. Ive
noticed no difference for if the guest is using virtio or ide mode.
Guests will become unresponsive for >10 seconds when there is high disk
usage on the node.

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kvm + virtio disk corrupts large volumes (>1TB).
https://bugs.launchpad.net/bugs/574665
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