Folks who keep track of cvs changes might have noticed that new a device has
been introduced called esm(4). ESM, Embedded Server Management, is a Dell
specific server management protocol for 4th and 5th generation servers (e.g.
2450, 2500 etc). It's in essence what later became IPMI which we also support
via ipmi(4).
Code courtesy of the friendly folks who brought you ipmi(4). Jordan Hargrave
(jordan@) wrote the initial code and David Gwynne (dlg@) cleaned it up, added a
bunch of sensors and integrated it into the sensor framework.
esm(4) provides environmental environmental data of a server via sysctl so that
it can be monitored using sensorsd(8). It displays its presence in dmesg like
this:
esm0 at mainbus0
esm0: PowerEdge 2500 Embedded Server Management 5.43
esm0: Primary System Backplane 1.32
Here are the sensors when everything is ok:
# sysctl hw.sensors
hw.sensors.0=esm0, CPU 1, OK, temp, 38.00 degC / 100.40 degF
hw.sensors.1=esm0, Mainboard, OK, temp, 36.00 degC / 96.80 degF
hw.sensors.2=esm0, CPU 1 Core, OK, volts_dc, 1.72 V
hw.sensors.3=esm0, Motherboard +5V, OK, volts_dc, 5.03 V
hw.sensors.4=esm0, Motherboard +12V, OK, volts_dc, 11.92 V
hw.sensors.5=esm0, Motherboard +3.3V, OK, volts_dc, 3.31 V
hw.sensors.6=esm0, Motherboard +2.5V, OK, volts_dc, 2.52 V
hw.sensors.7=esm0, Motherboard GTL Term, OK, volts_dc, 1.50 V
hw.sensors.8=esm0, Motherboard Battery, OK, volts_dc, 2.88 V
hw.sensors.9=esm0, Chassis Intrusion, indicator, On
hw.sensors.10=esm0, Fan 1, OK, fanrpm, 2700 RPM
hw.sensors.11=esm0, Fan 2, OK, fanrpm, 2640 RPM
hw.sensors.12=esm0, Fan 3, OK, fanrpm, 2670 RPM
hw.sensors.13=esm0, Power Ctrl, raw, 0
hw.sensors.14=esm0, Fan 4, OK, fanrpm, 2730 RPM
hw.sensors.15=esm0, Backplane, raw, 0
hw.sensors.16=esm0, Backplane Top, OK, temp, 41.00 degC / 105.80 degF
hw.sensors.17=esm0, Backplane Bottom, OK, temp, 38.00 degC / 100.40 degF
hw.sensors.18=esm0, Backplane +5V, OK, volts_dc, 4.99 V
hw.sensors.19=esm0, Backplane +12V, OK, volts_dc, 12.24 V
hw.sensors.20=esm0, Backplane SCSI A Connected, indicator, On
hw.sensors.21=esm0, Backplane SCSI A External, OK, volts_dc, 4.72 V
hw.sensors.22=esm0, Backplane SCSI B Connected, indicator, Off
hw.sensors.23=esm0, Drive 1, drive, online
hw.sensors.24=esm0, Drive 2, drive, online
hw.sensors.25=esm0, Drive 3, drive, online
hw.sensors.26=esm0, Drive 4, drive, empty
hw.sensors.27=esm0, Drive 5, drive, empty
hw.sensors.28=esm0, Drive 6, drive, empty
hw.sensors.29=esm0, Backplane Control 2, raw, 49
hw.sensors.30=esm0, Backplane +3.3V, OK, volts_dc, 3.31 V
hw.sensors.31=safte0, temp0, OK, temp, 41.11 degC / 106.00 degF
hw.sensors.32=safte0, temp1, OK, temp, 37.78 degC / 100.00 degF
Note that esm(4) also keeps track of drives independently of safte(4).
Cool! Now let's pull a fan:
hw.sensors.14=esm0, Fan 4, CRITICAL, fanrpm, 0 RPM
Now lets reinsert it:
hw.sensors.14=esm0, Fan 4, OK, fanrpm, 2810 RPM
And life returns to normalcy.
Another very useful feature is the watchdog timer that is provided by the ESM
hardware. Watchdog timers need to be tickled every X seconds, if the
tickling doesn't happen it'll reboot the server. This is handy for servers
that are 1000 miles away and have unrecoverable kernel hangs (not rebootable
from ddb(4)). To enable the watchdog simply type:
# sysctl -w kern.watchdog.period=10
This will tickle the watchdog period/2, in this case every 5 seconds. Now if
the server hangs (e.g. put it in ddb(4)) it'll reboot after 10-ish seconds.
To disable the watchdog simply set the period to 0, like so:
# sysctl -w kern.watchdog.period=0
As a sidenote I would like to mention that ipmi(4) has also been updated to
provide watchdog functionality.
Here is the dmesg:
OpenBSD 3.8-current (GENERIC) #4: Wed Nov 30 21:39:06 EST 2005
[EMAIL PROTECTED]:/usr/src/sys/arch/i386/compile/GENERIC
cpu0: Intel Pentium III ("GenuineIntel" 686-class) 927 MHz
cpu0:
FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR,SSE
real mem = 1073262592 (1048108K)
avail mem = 972746752 (949948K)
using 4278 buffers containing 53764096 bytes (52504K) of memory
mainbus0 (root)
bios0 at mainbus0: AT/286+(00) BIOS, date 08/15/03, BIOS32 rev. 0 @ 0xffe90
pcibios0 at bios0: rev 2.1 @ 0xf0000/0x10000
pcibios0: PCI IRQ Routing Table rev 1.0 @ 0xfc230/208 (11 entries)
pcibios0: PCI Interrupt Router at 000:15:0 ("ServerWorks OSB4" rev 0x00)
pcibios0: PCI bus #0 is the last bus
bios0: ROM list: 0xc0000/0x8000 0xc8000/0x1000 0xcc000/0x800 0xcc800/0x1400
0xce000/0x1000 0xec000/0x4000!
cpu0 at mainbus0
esm0 at mainbus0
esm0: PowerEdge 2500 Embedded Server Management 5.43
esm0: Primary System Backplane 1.32
pci0 at mainbus0 bus 0: configuration mode 1 (no bios)
pchb0 at pci0 dev 0 function 0 "ServerWorks CNB20HE Host" rev 0x23
pci1 at pchb0 bus 1
ppb0 at pci1 dev 2 function 0 "Intel i960 RM PCI-PCI" rev 0x02
pci2 at ppb0 bus 2
em0 at pci1 dev 12 function 0 "Intel PRO/1000MT (82546EB)" rev 0x01: irq 11,
address 00:07:e9:0b:6d:b4
em1 at pci1 dev 12 function 1 "Intel PRO/1000MT (82546EB)" rev 0x01: irq 10,
address 00:07:e9:0b:6d:b5
pchb1 at pci0 dev 0 function 1 "ServerWorks CNB20HE Host" rev 0x01
pchb2 at pci0 dev 0 function 2 "ServerWorks CNB20HE Host" rev 0x01
pchb3 at pci0 dev 0 function 3 "ServerWorks CNB20HE Host" rev 0x01
pci3 at pchb3 bus 3
ppb1 at pci3 dev 6 function 0 "DEC 21154 PCI-PCI" rev 0x05
pci4 at ppb1 bus 4
ppb2 at pci4 dev 0 function 0 "DEC 21154 PCI-PCI" rev 0x05
pci5 at ppb2 bus 5
ami0 at pci5 dev 0 function 0 "AMI MegaRAID" rev 0x20: irq 10 Dell 493/64b/lhc
ami0: FW 198U, BIOS v3.35, 128MB RAM
ami0: 2 channels, 0 FC loops, 1 logical drives
scsibus0 at ami0: 40 targets
sd0 at scsibus0 targ 0 lun 0: <AMI, Host drive #00, > SCSI2 0/direct fixed
sd0: 34560MB, 34560 cyl, 64 head, 32 sec, 512 bytes/sec, 70778880 sec total
scsibus1 at ami0: 16 targets
safte0 at scsibus1 targ 6 lun 0: <DELL, 1x6 U2W SCSI BP, 1.32> SCSI2
3/processor fixed
scsibus2 at ami0: 16 targets
"QLogic ISP12160" rev 0x06 at pci4 dev 1 function 0 not configured
mpt0 at pci3 dev 8 function 0 "Symbios Logic 53c1030" rev 0x07: irq 11
mpt0: IM support: 6
scsibus3 at mpt0: 16 targets
sd1 at scsibus3 targ 2 lun 0: <COMPAQPC, ATLAS IV 9 WLS, 0828> SCSI3 0/direct
fixed
sd1: 8678MB, 13816 cyl, 4 head, 321 sec, 512 bytes/sec, 17773500 sec total
sd2 at scsibus3 targ 4 lun 0: <COMPAQPC, ATLAS IV 9 WLS, 0828> SCSI3 0/direct
fixed
sd2: 8678MB, 13816 cyl, 4 head, 321 sec, 512 bytes/sec, 17773500 sec total
mpt0: target 2 Synchronous at 80MHz width 16bit offset 31 QAS 0 DT 1 IU 0
mpt0: target 4 Synchronous at 80MHz width 16bit offset 31 QAS 0 DT 1 IU 0
mpt1 at pci3 dev 8 function 1 "Symbios Logic 53c1030" rev 0x07: irq 10
mpt1: IM support: 6
scsibus4 at mpt1: 16 targets
fxp0 at pci0 dev 4 function 0 "Intel 82557" rev 0x08, i82559: irq 11, address
00:06:5b:1a:7d:db
inphy0 at fxp0 phy 1: i82555 10/100 PHY, rev. 4
ohci0 at pci0 dev 8 function 0 "NEC USB" rev 0x43: irq 10, version 1.0
usb0 at ohci0: USB revision 1.0
uhub0 at usb0
uhub0: NEC OHCI root hub, rev 1.00/1.00, addr 1
uhub0: 3 ports with 3 removable, self powered
ohci1 at pci0 dev 8 function 1 "NEC USB" rev 0x43: irq 11, version 1.0
usb1 at ohci1: USB revision 1.0
uhub1 at usb1
uhub1: NEC OHCI root hub, rev 1.00/1.00, addr 1
uhub1: 2 ports with 2 removable, self powered
ehci0 at pci0 dev 8 function 2 "NEC USB" rev 0x04: irq 10
usb2 at ehci0: USB revision 2.0
uhub2 at usb2
uhub2: NEC EHCI root hub, rev 2.00/1.00, addr 1
uhub2: 5 ports with 5 removable, self powered
vendor "AMI", unknown product 0x9063 (class system subclass miscellaneous, rev
0x04) at pci0 dev 10 function 0 not configured
vga1 at pci0 dev 14 function 0 "ATI Rage XL" rev 0x27
wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation)
wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
pcib0 at pci0 dev 15 function 0 "ServerWorks OSB4" rev 0x50
pciide0 at pci0 dev 15 function 1 "ServerWorks OSB4 IDE" rev 0x00: DMA
atapiscsi0 at pciide0 channel 0 drive 0
scsibus5 at atapiscsi0: 2 targets
cd0 at scsibus5 targ 0 lun 0: <TEAC, CD-224E, 3.7D> SCSI0 5/cdrom removable
cd0(pciide0:0:0): using PIO mode 4, DMA mode 2, Ultra-DMA mode 2
ohci2 at pci0 dev 15 function 2 "ServerWorks OSB4/CSB5 USB" rev 0x04: irq 5,
version 1.0, legacy support
usb3 at ohci2: USB revision 1.0
uhub3 at usb3
uhub3: ServerWorks OHCI root hub, rev 1.00/1.00, addr 1
uhub3: 2 ports with 2 removable, self powered
isa0 at pcib0
isadma0 at isa0
pckbc0 at isa0 port 0x60/5
pckbd0 at pckbc0 (kbd slot)
pckbc0: using irq 1 for kbd slot
wskbd0 at pckbd0: console keyboard, using wsdisplay0
pcppi0 at isa0 port 0x61
midi0 at pcppi0: <PC speaker>
spkr0 at pcppi0
sysbeep0 at pcppi0
lpt0 at isa0 port 0x378/4 irq 7
npx0 at isa0 port 0xf0/16: using exception 16
pccom0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo
pccom1 at isa0 port 0x2f8/8 irq 3: ns16550a, 16 byte fifo
fdc0 at isa0 port 0x3f0/6 irq 6 drq 2
fd0 at fdc0 drive 0: 1.44MB 80 cyl, 2 head, 18 sec
biomask ff65 netmask ff65 ttymask ffe7
pctr: 686-class user-level performance counters enabled
mtrr: Pentium Pro MTRR support
dkcsum: sd0 matches BIOS drive 0x80
root on sd0a
rootdev=0x400 rrootdev=0xd00 rawdev=0xd02
