On Sat, 16 Jun 2007 15:52:33 +0400, Brad Campbell wrote: > I've got a box here based on current Debian Stable. > It's got 15 Maxtor SATA drives in it on 4 Promise TX4 controllers. > > Using kernel 2.6.21.x it shuts down, but of course with a huge "clack" as 15 drives all do emergency > head parks simultaneously. I thought I'd upgrade to 2.6.22-rc to get around this but the machine > just hangs up hard apparently trying to sync cache on a drive. > > I've run this process manually, so I know it is being performed properly. > > Prior to shutdown, all nfsd processes are stopped, filesystems unmounted and md arrays stopped. > /proc/mdstat shows > root@storage1:~# cat /proc/mdstat > Personalities : [raid6] [raid5] [raid4] > unused devices: <none> > root@storage1:~# > > Here is the final hangup. > > http://www.fnarfbargle.com/CIMG1029.JPG Something sent a command to the disk on ata15 after the PHY had been offlined and the interface had been put in SLUMBER state (SStatus 614). Consequently the command timed out. Libata tried a soft reset, and then a hard reset, after which the machine hung. I don't think sata_promise is the guilty party here. Looks like some layer above sata_promise got confused about the state of the interface. I did a quick sata_promise test here with kernel 2.6.22-rc4-git8 and FC4 userspace, and there was no problem shutting the machine down. /Mikael - To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
