Hi Jeff, > How hard does it hang? You can ping it, but can't type?
It depends - the more I see this the more it seems to be I/O blocking rather than hanging, e.g. I can type, but if I run 'ls' then the shell hangs, as if the 'ls' command is waiting for the disk. Ctrl+C or Ctrl+\ won't work, as it seems to be stuck somewhere in kernel land (if it reacts anything like a desktop PC when the disk fails.) I haven't tried pinging, however even the console (which is mapped to stdin/out) locks - if I press enter at the 'login:' prompt all I get is the cursor moving to the next line - but as the login normally displays /etc/issue before the prompt, I suspect that's why. For this reason I suspect that ping will still work as the network stack shouldn't need to access the disk. Interestingly enough, sometimes it just runs *really* slowly and sits there doing nothing for maybe 20 seconds then comes back to life, and other times it never comes back. One odd behaviour is that during these slow periods and even during the permanent hanging, the host is writing to the disk at ~3MB/sec - in the case of the permanent hang it writes like this continuously, until I run 'kill <pid>' on the host. This is nothing odd or resource-intensive from the host's point of view, but it makes me wonder whether there's a bug somewhere in the UML disk/ubd code that causes the UML to continuously write out disk data in an endless loop, without realising the writes are being successful. This seems to happen reliably if I do this: uml$ cp -Rv ~/host/php-5.1.1/ . Where the folder contains the PHP source code, already compiled for the host. I say 'reliably' in that it locks up at various points throughout the copy operation, but as yet it's never reached the finish. Thanks, Adam. ------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://sel.as-us.falkag.net/sel?cmd=lnk&kid=103432&bid=230486&dat=121642 _______________________________________________ User-mode-linux-user mailing list User-mode-linux-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user
