Hi, guys. Jóhann raised a concern about the potential ext4 corruption issue that's currently under discussion upstream: http://bugzilla.kernel.org/show_bug.cgi?id=14354 the discussion between Eric and Linus tends towards the theory that this is not affecting 2.6.31, but we'd like to have somewhat more certainty of this. For those who are testing F12 on disposable systems/partitions, it would be very much appreciated if you could test this. Testing it is relatively easy - all we need you to do is dirty power-off active systems with ext4 partitions. If they're physical systems, yank the plug. If they're virtual machines, do a forced power-off from the VM interface (not a clean shutdown request). Ideally while they're writing data. See if you can get some data corruption this way. There's some suggested operations to reproduce this in the bug report. e.g. Eric's reproduction method is detailed in http://bugzilla.kernel.org/show_bug.cgi?id=14354#c141 . But basically just suddenly powering off the system while something's writing data to an ext4 partition is the key - ideally you know _what_ data is being written, so you can check if it's been corrupted on the next boot. Again, let me emphasize, since this is a potential data corruption bug, I _hope_ it's obvious you shouldn't test it on any system or data you actually care about :). Of course, as Dan says, any data you don't have backed up is data you don't care about, but please bear that in mind. For my peace of mind it'd be great if a few of you can try this and confirm whether or not you're able to dependably cause corruption this way. It's also worth noting Jóhann and I both came to this report via the somewhat dubious Ubuntu report at https://bugs.launchpad.net/ubuntu/+source/linux/+bug/453579 , which claims to see corruption of large files on ext4 partitions. This upstream bug was linked from that one, though they don't look related to me. I don't place a lot of credence in the Ubuntu report, but obviously if anyone's observed large files being corrupted on F12 ext4 partitions, PLEASE let us know about this. Check those sha256sums. -- Adam Williamson Fedora QA Community Monkey IRC: adamw | Fedora Talk: adamwill AT fedoraproject DOT org http://www.happyassassin.net -- fedora-test-list mailing list fedora-test-list@xxxxxxxxxx To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-test-list
