Hi, my problem still exists: the UML hangs om hdd-intensive processess (like apt-get dist-upgrade). I tried a lot of things in time:
o tried on 2 machines with different hardware, different Host- and Guest-Kernels o CONFIG_BLK_DEV_UBD_SYNC is not set o tried ext2/reiserfs on the Guest-UML o when the UML hangs, it does not respond to sysrqs o SKAS is not patched into the Host-System o UML has enough swap-space (tried tmpfs, too) o did an strace: http://home.oliverbaltz.de/transfer/strace-uml-freeze.txt.gz I followed this HOWTO: http://oliverbaltz.de/index.php?id=101 Any ideas? Thanks in advance. Oliver > Thanks for all your hints but: > > @James: > My UML got 32M and 256M swap. The UML-Host has 448M physical RAM - I think > it`s enough for UML and Host. Or am I wrong? > > @Ginie: > The .config of my UML says: "# CONFIG_BLK_DEV_UBD_SYNC is not set". > > Any other ideas? > Olli > >> On Thu, 3 Mar 2005, Oliver Baltz wrote: >> >>> my UML hangs while intensive processes that use the HDD. For example: >>> rgrep, upgrade,... >>> >>> UML-Hostsystem: 2.4.27-1-386, Intel ICH5 SATA 150-Controller >>> UML: 2.4.26-3um-1 >> >> I had a similar experience. I configured the UML with 256MB RAM, and >> put >> the image file in /dev/shm (tmpfs). However, the default size of tmpfs >> is >> half your physical memory (256 MB). When I did a big update, I/O >> buffers >> went above 128MB, and UML got what it called a "kernel mode signal 7" >> (SIGBUS). Limiting the RAM to 120MB (leaving a little space for >> overhead >> and other users) cured the problem completely. Making tmpfs bigger >> would >> also have helped. But don't enlarge it above swap space plus physical >> memory, because when you fill it up, there's no space for programs and >> the >> host kernel will panic. >> >> James F. Carter Voice 310 825 2897 FAX 310 206 6673 >> UCLA-Mathnet; 6115 MSA; 405 Hilgard Ave.; Los Angeles, CA, USA >> 90095-1555 >> Email: [EMAIL PROTECTED] http://www.math.ucla.edu/~jimc (q.v. for >> PGP >> key) >> > > > > > ------------------------------------------------------- > SF email is sponsored by - The IT Product Guide > Read honest & candid reviews on hundreds of IT Products from real users. > Discover which products truly live up to the hype. Start reading now. > http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click > _______________________________________________ > User-mode-linux-user mailing list > User-mode-linux-user@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user > ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click _______________________________________________ User-mode-linux-user mailing list User-mode-linux-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user
