Messages in this thread | | | Date | Thu, 6 Dec 2007 19:44:26 +0100 | From | Francois Romieu <> | Subject | Re: Reproducible data corruption with sendfile+vsftp - splice regression? |
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Holger Hoffstaette <holger@wizards.de> : [...] > Maybe turning off sendfile or NAPI just lead to random success - so far it > really looks like tso on the r8169 is the common cause.
TSO on the r8169 is the magic switch but the regression makes imvho more sense from a VM pov:
- the corrupted file has the same size as the expected file - the corrupted file exhibits holes which come as a multiple of 4096 bytes (8*4k, 2 places, there may be more) - the r8169 driver does not know what a page is - the 8169 hardware has a small 8192 bytes Tx buffer
It would be nice if someone could do a sendfile + vsftp test with TSO on a different hardware. While I could not reproduce the corruption when simply downloading a file that I had copied on the server with scp, it triggered almost immediately after I copied it locally and tried to download the copy.
-- Ueimor
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