Messages in this thread | | | Date | Tue, 28 Sep 2010 18:16:19 +0200 | Subject | [REGRESSION] um: ubd: block layer issue (Was: ext3 filesystem corruption in user mode linux) | From | richard -rw- weinberger <> |
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Hi Tejun!
Chris Frey ran into some problems with ext3 on UML. See: http://marc.info/?i=20100924041410.GA18040%20()%20foursquare%20!%20net
I can reproduce this issue with any file system on Linux >= 2.6.31. There seems to be a serious problem with the block layer on UML. Under high load any file system gets corrupted.
The regression was most likely introduced with this three changes: 83096ebf1263b2c1ee5e653ba37d993d02e3eb7b (block: convert to pos and nr_sectors accessors) f81f2f7c9fee307e371f37424577d46f9eaf8692 (ubd: drop unnecessary rq->sector manipulation) 4d6c84d91d1a539ebc47d1a36a35e9390ba11fdc (ubd: cleanup completion path)
Maybe only f81f2f7 is the bad one. They depend on each and I don't know all the internals...
-- Cheers, //richard
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