State of NVMe/NVMe hot-swap

2019-03-03 Thread Charles Sprickman via freebsd-stable 
Hi folks,

I’ve been looking at mailing list archives, talking to my server vendor, 
looking at the official forums and I’m not finding lots of folks talking about 
NVMe drives. My forum query on hot-swap got a total of one response (and not 
from a NVMe user).

I’m looking at new servers and we really tend to use them until they drop, and 
it seems not too crazy to think that SATA and SAS SSDs will start growing 
scarce in 5-8 years (or at least get more expensive than NVMe when it’s 
mainstream). It seems like laptops and even many desktops are now using NVMe 
drives in the m.2 format.  IOW, it’s the future.

So can anyone comment on using NVMe in production, specifically the “u.2” 
format that gives you a nice 2.5” drive with hot swap capability? And more 
specifically, can you comment on how well (if at all) hot swap works?  Really 
open to any feedback before I commit to buying a few servers based on NVMe 
drives.

Thanks,

Charles
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Re: FreeBSD-11: Fatal trap 9: general protection fault while in kernel mode (in key_addref())

2019-03-03 Thread Slawa Olhovchenkov 
On Wed, Feb 27, 2019 at 11:54:20PM +0300, Slawa Olhovchenkov wrote:

> Is this known issuse?
> 
> Fatal trap 9: general protection fault while in kernel mode
> cpuid = 13; apic id = 2a
> instruction pointer = 0x20:0x806b6a94
> stack pointer   = 0x28:0xfe2026e274f0
> frame pointer   = 0x28:0xfe2026e274f0
> code segment= base 0x0, limit 0xf, type 0x1b
> = DPL 0, pres 1, long 1, def32 0, gran 1
> processor eflags= interrupt enabled, resume, IOPL = 0
> current process = 12 (irq295: t5nex0:0a5)
> trap number = 9
> panic: general protection fault
> cpuid = 13
> KDB: stack backtrace:
> db_trace_self_wrapper() at 0x8032667b = 
> db_trace_self_wrapper+0x2b/frame 0xfe2026e27130
> vpanic() at 0x804c2006 = vpanic+0x186/frame 0xfe2026e271b0
> panic() at 0x804c1e73 = panic+0x43/frame 0xfe2026e27210
> trap_fatal() at 0x807503f2 = trap_fatal+0x322/frame 0xfe2026e27260
> trap() at 0x8074fa5e = trap+0x5e/frame 0xfe2026e27420
> calltrap() at 0x80735771 = calltrap+0x8/frame 0xfe2026e27420
> --- trap 0x9, rip = 0x806b6a94, rsp = 0xfe2026e274f0, rbp = 
> 0xfe2026e274f0 ---
> key_addref() at 0x806b6a94 = key_addref+0x4/frame 0xfe2026e274f0
> ipsec_getpcbpolicy() at 0x806b20b9 = ipsec_getpcbpolicy+0x49/frame 
> 0xfe2026e27530
> ipsec4_getpolicy() at 0x806b10a5 = ipsec4_getpolicy+0x25/frame 
> 0xfe2026e275d0
> ipsec4_in_reject() at 0x806b138b = ipsec4_in_reject+0x1b/frame 
> 0xfe2026e27600
> tcp_input() at 0x8066127c = tcp_input+0x97c/frame 0xfe2026e27740
> ip_input() at 0x805e447f = ip_input+0x10f/frame 0xfe2026e277a0
> netisr_dispatch_src() at 0x805c4750 = netisr_dispatch_src+0xa0/frame 
> 0xfe2026e277f0
> ether_demux() at 0x805b43ff = ether_demux+0x13f/frame 
> 0xfe2026e27820
> ether_nh_input() at 0x805b506b = ether_nh_input+0x31b/frame 
> 0xfe2026e27880
> netisr_dispatch_src() at 0x805c4750 = netisr_dispatch_src+0xa0/frame 
> 0xfe2026e278d0
> ether_input() at 0x805b4676 = ether_input+0x26/frame 
> 0xfe2026e278f0
> t4_eth_rx() at 0x816403b3 = t4_eth_rx+0x103/frame 0xfe2026e27910
> service_iq() at 0x81644886 = service_iq+0x4a6/frame 0xfe2026e279c0
> t4_intr() at 0x81644b3e = t4_intr+0x2e/frame 0xfe2026e279e0
> intr_event_execute_handlers() at 0x804871ac = 
> intr_event_execute_handlers+0xec/frame 0xfe2026e27a20
> ithread_loop() at 0x80487846 = ithread_loop+0xd6/frame 
> 0xfe2026e27a70
> fork_exit() at 0x80484805 = fork_exit+0x85/frame 0xfe2026e27ab0
> fork_trampoline() at 0x80735cae = fork_trampoline+0xe/frame 
> 0xfe2026e27ab0
> --- trap 0, rip = 0, rsp = 0, rbp = 0 ---
> Uptime: 657d14h33m52s

kgdb decode:

Unread portion of the kernel message buffer:


Fatal trap 9: general protection fault while in kernel mode
cpuid = 13; apic id = 2a
instruction pointer = 0x20:0x806b6a94
stack pointer   = 0x28:0xfe2026e274f0
frame pointer   = 0x28:0xfe2026e274f0
code segment= base 0x0, limit 0xf, type 0x1b
= DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags= interrupt enabled, resume, IOPL = 0
current process = 12 (irq295: t5nex0:0a5)
trap number = 9
panic: general protection fault
cpuid = 13
KDB: stack backtrace:
db_trace_self_wrapper() at 0x8032667b = 
db_trace_self_wrapper+0x2b/frame 0xfe2026e27130
vpanic() at 0x804c2006 = vpanic+0x186/frame 0xfe2026e271b0
panic() at 0x804c1e73 = panic+0x43/frame 0xfe2026e27210
trap_fatal() at 0x807503f2 = trap_fatal+0x322/frame 0xfe2026e27260
trap() at 0x8074fa5e = trap+0x5e/frame 0xfe2026e27420
calltrap() at 0x80735771 = calltrap+0x8/frame 0xfe2026e27420
--- trap 0x9, rip = 0x806b6a94, rsp = 0xfe2026e274f0, rbp = 
0xfe2026e274f0 ---
key_addref() at 0x806b6a94 = key_addref+0x4/frame 0xfe2026e274f0
ipsec_getpcbpolicy() at 0x806b20b9 = ipsec_getpcbpolicy+0x49/frame 
0xfe2026e27530
ipsec4_getpolicy() at 0x806b10a5 = ipsec4_getpolicy+0x25/frame 
0xfe2026e275d0
ipsec4_in_reject() at 0x806b138b = ipsec4_in_reject+0x1b/frame 
0xfe2026e27600
tcp_input() at 0x8066127c = tcp_input+0x97c/frame 0xfe2026e27740
ip_input() at 0x805e447f = ip_input+0x10f/frame 0xfe2026e277a0
netisr_dispatch_src() at 0x805c4750 = netisr_dispatch_src+0xa0/frame 
0xfe2026e277f0
ether_demux() at 0x805b43ff = ether_demux+0x13f/frame 0xfe2026e27820
ether_nh_input() at 0x805b506b = ether_nh_input+0x31b/frame 
0xfe2026e27880
netisr_dispatch_src() at 0x805c4750 = netisr_dispatch_src+0xa0/frame 
0xfe2026e278d0
ether_input() at 0x

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