Hi, for some weeks now I experience strange hangs in the HVM guest''s serial console. I use serial="pty" or serial="file:foo" to redirect an HVM Linux guest''s output (with console=ttyS0,115200n8 on the guest kernel cmdline). This usually works, but about half of the time the output (and it seems the guest, too) stops somewhere. I can continue guest operation by pressing a key in the guest''s console (of course not in the file: case). Beside that it looks like it is one key behind, so to see the result of an ls for instance I have to press Enter twice. Has anyone an idea what could cause it or how to debug this? Thanks, Andre. P.S. I am using a (fairly) recent -unstable HV (about two weeks old), latest unstable xl tool set and a 2.6.32.19-pvops Dom0 kernel. -- Andre Przywara AMD-Operating System Research Center (OSRC), Dresden, Germany Tel: +49 351 448-3567-12 _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Andre Przywara writes ("[Xen-devel] Guest serial console
hangs"):> for some weeks now I experience strange hangs in the HVM guest''s
serial
> console.
What is the guest kernel ? There were bugs in Linux''s serial port
driver which had these symptoms.
Ian.
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Ian Jackson wrote:> Andre Przywara writes ("[Xen-devel] Guest serial console hangs"): >> for some weeks now I experience strange hangs in the HVM guest''s serial >> console. > > What is the guest kernel ? There were bugs in Linux''s serial port > driver which had these symptoms.Good hint! That cured the problem. It was an older kernel (from ttylinux, serial console support added). I tried 2.6.36-rc3 and it worked like a charm! Thanks! Just out of curiosity: Can you give me a hint when or where these bugs were fixed? Regards, Andre. -- Andre Przywara AMD-Operating System Research Center (OSRC), Dresden, Germany Tel: +49 351 448-3567-12 _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel