Shaozhi Ye wrote: > Hi there, > > We are planing to evaluate the reliability and integrity of ext4 > against power failures and will post the results when its done. > Please find attached design document and let me know if you have any > suggestions for features to test or existing benchmark tools which > serve our purpose. > > Thank you! > I'll be very interested to see the results. One thing you will need to look out for (people who know me knew I would say this ;) is volatile write caches on the storage, and filesystem barrier implementation. To characterize the test, you'll want to be explicit about your storage. Are they local disks? A Raid controller? If the disks are external to the server, is power lost to the disks? Do they have write caching enabled? If so do write barriers from the filesystem pass through to the storage? This will all be highly relevant to how a power loss will affect the filesystem. I'm also curious about whether the tool itself will be available under an open source license? Other filesystems would benefit from this testing as well. Thanks, -Eric -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
