Comment 32 for bug 204133

Colin,

Thanks again for your very helpful insights! I was aware about the nested filesystem vulnerabilities in power failure scenarios, not from code analysis, but from "empirical evidence". And that is in fact stated in http://wubi-installer.org/faq.php (requirements > any gotcha). I am mostly interested in a reasonable set of sysctl/mount args to minimize said risks (given that they cannot be eliminated completely). And also to ensure that there is no data loss of any type in a normal reboot (via rc6.d). In that respect, do you think there is anything we should change to improve the situation?

The new initramfs/umountroot will not be used since at this stage it is my understanding that they do not change much (extra mount options are ignored by ntfs-3g and /host cannot be remounted r/o). Evan already added your sysctl suggestions to lupin and they are in the new ISOs. In fact they seem to be enough to "close" the original bug! Anything else we should consider?

On a side note, you might also be interested in this discussion: http://lkml.org/lkml/2008/1/9/50

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