Jens Lechtenboerger wrote: > On Wed, Mar 18 2009, Jens Lechtenboerger wrote: > > [...] > > However, I realized that sometimes I get the following messages in > > syslog: > > __ratelimit: 10 callbacks suppressed > > Buffer I/O error on device loop7, logical block 0 > > Buffer I/O error on device loop7, logical block 1 > > ... > > Buffer I/O error on device loop7, logical block 9 > > > > Sometimes, there are "30" or "50" callbacks instead of "10". > > The above messages do not appear every time (although make tests > > fails every time), and I fail to see a pattern. I'll retry later > > today. > > The problem is unrelated to loop-aes. I executed the following > script (based on make tests): > > #!/bin/bash > TLD=/dev/loop1 > declare -i i=0 > rm -f test-file* > dd if=/dev/zero of=test-file1 bs=1024 count=33 > cp test-file1 test-file3 > while true > do > echo "Iteration $((i+=1))" > /sbin/losetup /dev/loop1 test-file1 > dd if=test-file3 of=/dev/loop1 bs=1024 count=33 conv=notrunc > if ! /sbin/losetup -d $TLD ; then exit 1 ; fi > /sbin/losetup /dev/loop1 test-file1 > dd if=/dev/loop1 of=test-file4 bs=33792 count=1 > if ! /sbin/losetup -d $TLD ; then exit 1 ; fi > done > > This script fails randomly after several executions of losetup -d > (the first as well as the second one) with: > ioctl: LOOP_CLR_FD: Device or resource busy > Sometimes with the above messages in syslog, sometimes without. > This also happens with plain Ubuntu Jaunty Alpha 6 (no loop-aes, > unpatched losetup). If I invoke fuser or lsof before losetup -d, > then the script runs endlessly. > > I guess I'll have to file a bug report, probably after testing a > vanilla kernel... I tested with unmodified Linus' linux-2.6.29-rc8 source from kernel.org and Ubuntu's linux-source-2.6.28_2.6.28-11.36_all.deb, both self compiled with my test box config. loop-AES-v3.2e + 20090112.diff Both kernels seemed to work ok. No failures here. I dowloaded linux-source-2.6.28_2.6.28-11.36_all.deb from nearby .fi mirror http://www.nic.funet.fi/pub/mirrors/archive.ubuntu.com/pool/main/l/linux/ md5sum: 41d603022c136e37caac2b9f854d2dc6 linux-source-2.6.28_2.6.28-11.36_all.deb dc8ef59b8e2133d72e874660dcad68bf linux-source-2.6.28.tar.bz2 What is/was the exact kernel source version number that you used and where did you get it from? Who compiled your kernel sources and loop-AES module? And how? Show me the commands. -- Jari Ruusu 1024R/3A220F51 5B 4B F9 BB D3 3F 52 E9 DB 1D EB E3 24 0E A9 DD - Linux-crypto: cryptography in and on the Linux system Archive: http://mail.nl.linux.org/linux-crypto/
