> On Nov 5, 2014, at 3:31 PM, Schweiss, Chip via illumos-discuss > <[email protected]> wrote: > > I had a system crash this morning when I/O on a pool was hung with > failmode=panic.
What version of OmniOS are you running? > That was 7 1/2 hours ago and it's at 64%. I'm going to let it complete so > the failure can be analyzed more, but I really need to find a way to > significantly speed up the crash dumps. > > This system has 256GB ram and a dedicated dump pool of two 320GB mirrored > SATA disks. > > I'm aware of the multi-threaded dump issue so I have these to lines in > /etc/system > > set dump_plat_mincpu=0 That should be the default now. I can't remember which rev of OmniOS it showed up in, but certainly it's in 010 or later. > It's not clear where the bottleneck is. I don't think it's the disk. The > disk activity lights are a light flicker, by no means being hit hard. Unless > it's a serial latency issue. > > What would be my best approach to get good dumps from a system like this in > minutes, not hours? Assuming that is possible. You weren't dumping to the same pool or the same controller where you had the I/O hang, were you? Dan ------------------------------------------- illumos-discuss Archives: https://www.listbox.com/member/archive/182180/=now RSS Feed: https://www.listbox.com/member/archive/rss/182180/21175430-2e6923be Modify Your Subscription: https://www.listbox.com/member/?member_id=21175430&id_secret=21175430-6a77cda4 Powered by Listbox: http://www.listbox.com
