On Wed, Aug 20, 2014 at 05:27:52PM +0200, Lentes, Bernd wrote: > lvcreate -v -L 45G -n lv_root_snapshot -s vg1/lv_root >> /var/log/update.log 2>&1 > lvcreate Suspending vg1-lv_root (252:0) with filesystem sync with device flush /var/log is presumably part of a filesystem on the same LV that is getting its I/O paused for a brief moment while the snapshot is taken. 1) Run lvm dumpconfig log/activation to double-check this is not set to 1. 2) What filesystem is this and precisely what kernel? (cat /proc/mounts) 3) Try to obtain a stack trace at the point where this locks up e.g. echo t > /proc/sysrq-trigger followed by dmesg (or divert your logging of kernel messages to a different filesystem outside the snapshot). Alasdair _______________________________________________ linux-lvm mailing list linux-lvm@redhat.com https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
