Hi all!
I've just upgraded my firewall from OpenBSD 4.0 to 4.2-stable and ran
into a small problem regarding mount_mfs. I solved it, but in case
anybody else runs into it, here's something for the archives.
I run the box from a 512MB CF and, originally, with very limited
memory. The /var, tmp and /dev are mount_mfs and during the upgrade I
had trobule with mounting /dev.
I used to mount /dev with the following line:
swap /dev mfs rw,-P=/proto/dev,-s=700,-i=256 0 0
It seems that sometime after 4.1 was released (probably during ffs2
development) mount_mfs was changed in such a way that it doesn't allow
very high density for inodes. This resulted in mount_mfs failing on
replicating the /dev and me getting a readonly /dev, which resulted
in a box that I couldn't login into remotly (with ssh). Luckily you I
could still issue commands with winscp or login locally. After couple
of tests I concluded that mount_mfs simply ignores density settings
lower than 1024, so I changed the /dev to settings to the following
line:
swap /dev mfs rw,-P=/proto/dev,-s=4000,-i=1024 0 0
Now everything is ok, I'm happy and sice CF is in a new box with lots
of memory I'm not trying to squeeze every byte out of it.
Maybe this maximal density could be documented somehow? I glanced at
the mkfs.c and saw that, in theory, it should warn the user when
reducing the density but I never got a warning during my tests.
dmesg in case anybody needs it:
OpenBSD 4.2-stable (SQUID_DISKD) #7: Fri Jan 18 21:11:32 CET 2008
[EMAIL PROTECTED]:/usr/src/sys/arch/i386/compile/SQUID_DISK
D
cpu0: Intel(R) Pentium(R) 4 CPU 2.66GHz ("GenuineIntel" 686-class) 3.02 GHz
cpu0:
FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUS
H,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,SBF,CNXT-ID,xTPR
real mem = 2146988032 (2047MB)
avail mem = 2068254720 (1972MB)
mainbus0 at root
bios0 at mainbus0: AT/286+ BIOS, date 07/11/03, BIOS32 rev. 0 @ 0xfb210,
SMBIOS rev. 2.2 @ 0xf0800 (34 entries)
bios0: vendor Phoenix Technologies, LTD version "6.00 PG" date 07/11/2003
bios0: http://www.abit.com.tw/ BE7-S/BE7-G/BE7-B (Intel i845PE-ICH4)
apm0 at bios0: Power Management spec V1.2
apm0: AC on, battery charge unknown
apm0: flags 70102 dobusy 1 doidle 1
pcibios0 at bios0: rev 2.1 @ 0xf0000/0xdf84
pcibios0: PCI IRQ Routing Table rev 1.0 @ 0xfdeb0/192 (10 entries)
pcibios0: PCI Exclusive IRQs: 5 7 9 10 11
pcibios0: PCI Interrupt Router at 000:31:0 ("Intel 82371SB ISA" rev 0x00)
pcibios0: PCI bus #2 is the last bus
bios0: ROM list: 0xc0000/0xd000 0xd0000/0x8000!
cpu0 at mainbus0
pci0 at mainbus0 bus 0: configuration mode 1 (no bios)
pchb0 at pci0 dev 0 function 0 "Intel 82845G/GL" rev 0x02
ppb0 at pci0 dev 1 function 0 "Intel 82845G/GL/GV/GE/PE AGP" rev 0x02
pci1 at ppb0 bus 1
vga1 at pci1 dev 0 function 0 "ATI Radeon 9500 Pro" rev 0x00
wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation)
wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
"ATI Radeon 9500 Pro Sec" rev 0x00 at pci1 dev 0 function 1 not configured
uhci0 at pci0 dev 29 function 0 "Intel 82801DB USB" rev 0x02: irq 5
uhci1 at pci0 dev 29 function 1 "Intel 82801DB USB" rev 0x02: irq 7
uhci2 at pci0 dev 29 function 2 "Intel 82801DB USB" rev 0x02: irq 11
ehci0 at pci0 dev 29 function 7 "Intel 82801DB USB" rev 0x02: irq 10
usb0 at ehci0: USB revision 2.0
uhub0 at usb0: Intel EHCI root hub, rev 2.00/1.00, addr 1
ppb1 at pci0 dev 30 function 0 "Intel 82801BA AGP" rev 0x82
pci2 at ppb1 bus 2
skc0 at pci2 dev 3 function 0 "D-Link Systems DGE-530T A1" rev 0x11, Yukon
(0x1): irq 10
sk0 at skc0 port A: address 00:13:46:64:e1:ef
eephy0 at sk0 phy 0: Marvell 88E1011 Gigabit PHY, rev. 3
pciide0 at pci2 dev 14 function 0 "CMD Technology SiI3112 SATA" rev 0x02: DMA
pciide0: using irq 11 for native-PCI interrupt
ichpcib0 at pci0 dev 31 function 0 "Intel 82801DB LPC" rev 0x02: 24-bit timer
at 3579545Hz
pciide1 at pci0 dev 31 function 1 "Intel 82801DB IDE" rev 0x02: DMA, channel 0
configured to compatibility, channel 1 configured to compatibility
wd0 at pciide1 channel 0 drive 0: <HDT722525DLAT80>
wd0: 16-sector PIO, LBA48, 238475MB, 488397168 sectors
wd1 at pciide1 channel 0 drive 1: <IC35L120AVV207-0>
wd1: 16-sector PIO, LBA48, 117800MB, 241254720 sectors
wd0(pciide1:0:0): using PIO mode 4, Ultra-DMA mode 5
wd1(pciide1:0:1): using PIO mode 4, Ultra-DMA mode 5
wd2 at pciide1 channel 1 drive 0: <Maxtor 4R120L0>
wd2: 16-sector PIO, LBA48, 117246MB, 240121728 sectors
wd2(pciide1:1:0): using PIO mode 4, Ultra-DMA mode 5
ichiic0 at pci0 dev 31 function 3 "Intel 82801DB SMBus" rev 0x02: irq 9
iic0 at ichiic0
usb1 at uhci0: USB revision 1.0
uhub1 at usb1: Intel UHCI root hub, rev 1.00/1.00, addr 1
usb2 at uhci1: USB revision 1.0
uhub2 at usb2: Intel UHCI root hub, rev 1.00/1.00, addr 1
usb3 at uhci2: USB revision 1.0
uhub3 at usb3: Intel UHCI root hub, rev 1.00/1.00, addr 1
isa0 at ichpcib0
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
lm0 at isa0 port 0x290/8: W83627HF
npx0 at isa0 port 0xf0/16: reported by CPUID; 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 ffe5 netmask ffe5 ttymask ffe7
pctr: user-level cycle counter enabled
mtrr: Pentium Pro MTRR support
dkcsum: wd0 matches BIOS drive 0x80
dkcsum: wd1 matches BIOS drive 0x81
dkcsum: wd2 matches BIOS drive 0x82
root on wd0a swap on wd0b dump on wd0b
Regards, Daniel.
