5.4-RELEASE-p4: shutdown hangs after rebuiding gmirror
michiel at boland.org
Mon Jul 11 12:17:14 GMT 2005
Hi. I am running FreeBSD 5.4-RELEASE-p4 on a sun V20Z. It has two seagate
ST373307LC disks. The disks are mirrored with gmirror:
Name Status Components
mirror/raid1 COMPLETE da0
I unplugged one of the disks, then rebooted to see if it would boot from
just the one disk. Of course there was no problem there.
I then inserted the other disk back in, followed by
camcontrol rescan all
gmirror forget raid1
gmirror insert raid1 da1
After a while the mirror was OK again. I then rebooted for a second time.
But the machine would not come up. The last lines printed on the console
Syncing disks, vnodes remaining...1 1 0 1 1 0 0 0 done
No buffers busy after final sync
GEOM_MIRROR: Device raid1: provider mirror/raid1 destroyed.
GEOM_MIRROR: Device raid1 destroyed.
So it was stuck somewhere in the shutdown sequence between the gmirror
destruction and the "Shutting down ACPI" bit. Sending a break to the
console did not produce a DDB prompt, whereas during normal operation it
I had to power-cycle to get the boot to work again.
If I leave the disks alone, rebooting does not hang the machine.
This is a bit of a nuisance. Who has any idea where to look to
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