On Thu, 15 Dec 2005, Jan Stavel wrote: > VIA Technologies, Inc. VIA VT6420 SATA RAID Controller (rev 80) > Inc. VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE (rev 06)
According to http://linux.yyz.us/sata/sata-status.html#via this supports SATA hotplugging in hardware. Good. Do keep in mind that according to http://linux.yyz.us/sata/software-status.html: "libata supports host controller hotplug ("yank the card"). All SATA devices are hotplug-capable. libata does not support device hotplug ("yank the drive")... yet. Update: Lukasz Kosewski has contributed an initial implementation of SATA device hotplug." So the Linux kernel driver does not support SATA hotplug well (read: at all) yet. And while switching a drive off is not exactly hotplug, it might explain the failure mode you observed: the code just isn't ready yet. > But if I try to power off a disk (unplug the power cable) the system > freezes. I cannot read /proc/mdstat. The only way to get the system > running is to do restart. This is a bad failure mode, I'd report it to the kernel bugzilla, or failing that, to the Debian BTS asking the kernel maintainers to forward it upstream. > Do I do something wrong when trying hardware fauilure? I don't think so, the hardware you have tried it with should survive it without trouble. -- "One disk to rule them all, One disk to find them. One disk to bring them all and in the darkness grind them. In the Land of Redmond where the shadows lie." -- The Silicon Valley Tarot Henrique Holschuh -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
