Package: linux-image-2.6.24-etchnhalf.1-686-bigmem Version: 2.6.24-6~etchnhalf.5 Severity: important
File operations hang after a while on a raid5 MD array with XFS filesystem on it. XFS may be irrelevant. Default parameters were used, so /sys/block/md*/md/stripe_cache_size was not changed. No error messages appear in dmesg or elsewhere, so a deadlock is suspected. A patch exists: http://www.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.24-rc8/2.6.24-rc8-mm1/broken-out/md-fix-an-occasional-deadlock-in-raid5.patch. The patch seems to appear (slightly modified) in the 2.6.26 (testing) kernel. The patch, or the version that appears in 2.6.26 is reported to solve the problem (I can not yet confirm). Increasing /sys/block/md*/md/stripe_cache_size to 4096 or 8192 is also reported to solve the problem (I can not yet confirm). The stable 2.6.18 kernel is not affected, though raid5 speed benefits from increasing /sys/block/md*/md/stripe_cache_size (confirmed). I use lenny/testing with a stable kernel. -- Package-specific info: -- System Information: Debian Release: lenny/sid APT prefers testing APT policy: (500, 'testing'), (500, 'stable') Architecture: i386 (i686) Kernel: Linux 2.6.24-etchnhalf.1-686-bigmem (SMP w/8 CPU cores) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/bash Versions of packages linux-image-2.6.24-etchnhalf.1-686-bigmem depends on: ii debconf [debconf-2.0] 1.5.22 Debian configuration management sy ii initramfs-tools [linux-initra 0.92j tools for generating an initramfs ii module-init-tools 3.4-1 tools for managing Linux kernel mo Versions of packages linux-image-2.6.24-etchnhalf.1-686-bigmem recommends: ii libc6-i686 2.7-13 GNU C Library: Shared libraries [i -- debconf information excluded -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]