OpenBSD 6.7 amd64
I'm dealing with a VPS on KVM with the disk having been recently
expanded from 50 >> 80 GB.
virtio1 at pci0 dev 4 function 0 "Qumranet Virtio Storage" rev 0x00
vioblk0 at virtio1
scsibus2 at vioblk0: 2 targets
sd0 at scsibus2 targ 0 lun 0: <VirtIO, Block Device, >
sd0: 81920MB, 512 bytes/sector, 167772160 sectors
I want to expand the root partition as part of revising the partition
layout but I'm not sure why I don't seem to see the full disk capacity
in the disklabel editor.
After booting to bsd.rd, I create the device node for sd0 as it seems
to be absent in ramdisk /dev. Then I run `fdisk -i sd0' with this
resulting MBR layout:
# fdisk sd0
Disk: sd0 geometry: 10443/255/63 [167772160 Sectors]
Offset: 0 Signature: 0xAA55
Starting Ending LBA Info:
#: id C H S - C H S [ start: size ]
-------------------------------------------------------------------------------
0: 00 0 0 0 - 0 0 0 [ 0: 0 ] unused
1: 00 0 0 0 - 0 0 0 [ 0: 0 ] unused
2: 00 0 0 0 - 0 0 0 [ 0: 0 ] unused
*3: A6 0 1 2 - 10442 254 63 [ 64: 167766731 ] OpenBSD
Disklabel shows reasonable total sectors:
# disklabel sd0
# /dev/rsd0c:
type: SCSI
disk: SCSI disk
label: Block Device
duid: e9f2e2b690e05a87
flags:
bytes/sector: 512
sectors/track: 63
tracks/cylinder: 255
sectors/cylinder: 16065
cylinders: 7179
total sectors: 167772160
boundstart: 64
boundend: 115330635
drivedata: 0
16 partitions:
# size offset fstype [fsize bsize cpg]
a: 103059328 64 4.2BSD 2048 16384 38128 # /
b: 524288 103059392 swap # none
c: 167772160 0 unused
d: 11746944 103583680 4.2BSD 2048 16384 12958 # /usr/local
Next I run `disklabel -E sd0'. In the disklabel editor, I have deleted
my 'b' and 'd' partitions to then try to (c)hange the 'a' partitiion.
At this point I see:
Partition a is currently 103059328 sectors in size, and can have a
maximum size of 115330571 sectors.
...so I seem unable to grow any partitions into this expanded disk.
Is this something to do with it being a virtual disk in a certain
configuration? And is this a case where I may need to set the disk
boundaries in disklabel(8) as described (although I don't know if this
fits description of "ports with fdisk(8) partition tables where..."):
b
Set OpenBSD disk boundaries. This option tells disklabel which parts
of the disk it is allowed to modify. This option is probably only useful for
ports with fdisk(8) partition tables where the ending sector in the MBR
is incorrect. The user may enter ‘*’ at the “Size” prompt to indicate the
entire size of the disk (minus the starting sector). This is
useful for disks
where the fdisk partition table is incapable of storing the real size. Note:
data may become corrupted if boundaries are extended such that they
overlap with other resident operating systems.
OpenBSD 6.7 (GENERIC.MP) #1: Sat May 16 16:33:02 MDT 2020
r...@syspatch-67-amd64.openbsd.org:/usr/src/sys/arch/amd64/compile/GENERIC.MP
real mem = 4278042624 (4079MB)
avail mem = 4135768064 (3944MB)
mpath0 at root
scsibus0 at mpath0: 256 targets
mainbus0 at root
bios0 at mainbus0: SMBIOS rev. 2.8 @ 0xf5920 (10 entries)
bios0: vendor SeaBIOS version
"rel-1.12.1-0-ga5cab58e9a3f-prebuilt.qemu.org" date 04/01/2014
bios0: QEMU Standard PC (i440FX + PIIX, 1996)
acpi0 at bios0: ACPI 1.0
acpi0: sleep states S3 S4 S5
acpi0: tables DSDT FACP APIC HPET
acpi0: wakeup devices
acpitimer0 at acpi0: 3579545 Hz, 24 bits
acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
cpu0 at mainbus0: apid 0 (boot processor)
cpu0: Intel Xeon Processor (Skylake, IBRS), 2594.55 MHz, 06-55-04
cpu0:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,MMX,FXSR,SSE,SSE2,HTT,SSE3,PCLMUL,SSSE3,FMA3,CX16,PCID,SSE4.1,SSE4.2,MOVBE,POPCNT,AES,XSAVE,AVX,F16C,RDRAND,HV,NXE,PAGE1GB,RDTSCP,LONG,LAHF,ABM,FSGSBASE,BMI1,HLE,AVX2,SMEP,BMI2,ERMS,INVPCID,RTM,AVX512F,AVX512DQ,CLWB,AVX512CD,AVX512BW,AVX512VL,PKU,IBRS,IBPB,SSBD,ARAT,XSAVEOPT,MELTDOWN
cpu0: 64KB 64b/line 2-way I-cache, 64KB 64b/line 2-way D-cache, 512KB
64b/line 16-way L2 cache
cpu0: ITLB 255 4KB entries direct-mapped, 255 4MB entries direct-mapped
cpu0: DTLB 255 4KB entries direct-mapped, 255 4MB entries direct-mapped
cpu0: smt 0, core 0, package 0
mtrr: Pentium Pro MTRR support, 8 var ranges, 88 fixed ranges
cpu0: apic clock running at 999MHz
cpu1 at mainbus0: apid 1 (application processor)
cpu1: Intel Xeon Processor (Skylake, IBRS), 2594.37 MHz, 06-55-04
cpu1:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,MMX,FXSR,SSE,SSE2,HTT,SSE3,PCLMUL,SSSE3,FMA3,CX16,PCID,SSE4.1,SSE4.2,MOVBE,POPCNT,AES,XSAVE,AVX,F16C,RDRAND,HV,NXE,PAGE1GB,RDTSCP,LONG,LAHF,ABM,FSGSBASE,BMI1,HLE,AVX2,SMEP,BMI2,ERMS,INVPCID,RTM,AVX512F,AVX512DQ,CLWB,AVX512CD,AVX512BW,AVX512VL,PKU,IBRS,IBPB,SSBD,ARAT,XSAVEOPT,MELTDOWN
cpu1: 64KB 64b/line 2-way I-cache, 64KB 64b/line 2-way D-cache, 512KB
64b/line 16-way L2 cache
cpu1: ITLB 255 4KB entries direct-mapped, 255 4MB entries direct-mapped
cpu1: DTLB 255 4KB entries direct-mapped, 255 4MB entries direct-mapped
cpu1: smt 0, core 1, package 0
ioapic0 at mainbus0: apid 0 pa 0xfec00000, version 20, 24 pins
acpihpet0 at acpi0: 100000000 Hz
acpiprt0 at acpi0: bus 0 (PCI0)
acpicpu0 at acpi0: C1(@1 halt!)
acpicpu1 at acpi0: C1(@1 halt!)
"ACPI0006" at acpi0 not configured
acpipci0 at acpi0 PCI0: _OSC failed
acpicmos0 at acpi0
"PNP0A06" at acpi0 not configured
"PNP0A06" at acpi0 not configured
"PNP0A06" at acpi0 not configured
"QEMU0002" at acpi0 not configured
"ACPI0010" at acpi0 not configured
cpu0: using Skylake AVX MDS workaround
pvbus0 at mainbus0: KVM
pvclock0 at pvbus0
pci0 at mainbus0 bus 0
pchb0 at pci0 dev 0 function 0 "Intel 82441FX" rev 0x02
pcib0 at pci0 dev 1 function 0 "Intel 82371SB ISA" rev 0x00
pciide0 at pci0 dev 1 function 1 "Intel 82371SB IDE" rev 0x00: DMA,
channel 0 wired to compatibility, channel 1 wired to compatibility
pciide0: channel 0 disabled (no drives)
atapiscsi0 at pciide0 channel 1 drive 0
scsibus1 at atapiscsi0: 2 targets
cd0 at scsibus1 targ 0 lun 0: <QEMU, QEMU DVD-ROM, 2.5+> removable
cd0(pciide0:1:0): using PIO mode 4, DMA mode 2
uhci0 at pci0 dev 1 function 2 "Intel 82371SB USB" rev 0x01: apic 0 int 11
piixpm0 at pci0 dev 1 function 3 "Intel 82371AB Power" rev 0x03: apic 0 int 9
iic0 at piixpm0
vga1 at pci0 dev 2 function 0 "Cirrus Logic CL-GD5446" rev 0x00
wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation)
wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
virtio0 at pci0 dev 3 function 0 "Qumranet Virtio Network" rev 0x00
vio0 at virtio0: address 56:00:02:c4:9a:25
virtio0: msix per-VQ
virtio1 at pci0 dev 4 function 0 "Qumranet Virtio Storage" rev 0x00
vioblk0 at virtio1
scsibus2 at vioblk0: 2 targets
sd0 at scsibus2 targ 0 lun 0: <VirtIO, Block Device, >
sd0: 81920MB, 512 bytes/sector, 167772160 sectors
virtio1: msix shared
virtio2 at pci0 dev 5 function 0 "Qumranet Virtio Memory Balloon" rev 0x00
viomb0 at virtio2
virtio2: apic 0 int 10
virtio3 at pci0 dev 6 function 0 "Qumranet Virtio RNG" rev 0x00
viornd0 at virtio3
virtio3: apic 0 int 10
isa0 at pcib0
isadma0 at isa0
fdc0 at isa0 port 0x3f0/6 irq 6 drq 2
pckbc0 at isa0 port 0x60/5 irq 1 irq 12
pckbd0 at pckbc0 (kbd slot)
wskbd0 at pckbd0: console keyboard, using wsdisplay0
pms0 at pckbc0 (aux slot)
wsmouse0 at pms0 mux 0
pcppi0 at isa0 port 0x61
spkr0 at pcppi0
usb0 at uhci0: USB revision 1.0
uhub0 at usb0 configuration 1 interface 0 "Intel UHCI root hub" rev
1.00/1.00 addr 1
uhidev0 at uhub0 port 1 configuration 1 interface 0 "QEMU QEMU USB
Tablet" rev 2.00/0.00 addr 2
uhidev0: iclass 3/0
ums0 at uhidev0: 3 buttons, Z dir
wsmouse1 at ums0 mux 0
vscsi0 at root
scsibus3 at vscsi0: 256 targets
softraid0 at root
scsibus4 at softraid0: 256 targets
root on sd0a (e9f2e2b690e05a87.a) swap on sd0b dump on sd0b
fd0 at fdc0 drive 1: density unknown
