新規HDD追加時に覚えておきたいコマンド
📅 2014/09/13
FreeBSDで新規HDD追加する度に忘れてしまうのでメモ。
- /dev/ada0 => physical:512B logical:512B
- /dev/ada3 => physical:4KB logical:512B
fdisk
Media sector size is 512という記述はlogical sector sizeという点に注意。 logical/physicalを見たい時は後述のコマンドを参照。
# fdisk -v /dev/ada0
******* Working on device /dev/ada0 *******
parameters extracted from in-core disklabel are:
cylinders=484521 heads=16 sectors/track=63 (1008 blks/cyl)
Figures below won't work with BIOS for partitions not in cyl 1
parameters to be used for BIOS calculations are:
cylinders=484521 heads=16 sectors/track=63 (1008 blks/cyl)
Media sector size is 512
Warning: BIOS sector numbering starts with sector 1
Information from DOS bootblock is:
The data for partition 1 is:
sysid 165 (0xa5),(FreeBSD/NetBSD/386BSD)
start 63, size 486539235 (237567 Meg), flag 80 (active)
beg: cyl 0/ head 1/ sector 1;
end: cyl 1023/ head 255/ sector 63
The data for partition 2 is:
<UNUSED>
The data for partition 3 is:
<UNUSED>
The data for partition 4 is:
<UNUSED>
# fdisk -v /dev/ada3
******* Working on device /dev/ada3 *******
parameters extracted from in-core disklabel are:
cylinders=5814021 heads=16 sectors/track=63 (1008 blks/cyl)
Figures below won't work with BIOS for partitions not in cyl 1
parameters to be used for BIOS calculations are:
cylinders=5814021 heads=16 sectors/track=63 (1008 blks/cyl)
Media sector size is 512
Warning: BIOS sector numbering starts with sector 1
Information from DOS bootblock is:
The data for partition 1 is:
sysid 238 (0xee),(EFI GPT)
start 1, size 4294967295 (2097151 Meg), flag 0
beg: cyl 0/ head 0/ sector 2;
end: cyl 1023/ head 255/ sector 63
The data for partition 2 is:
<UNUSED>
The data for partition 3 is:
<UNUSED>
The data for partition 4 is:
<UNUSED>
diskinfo
-c オプションでread/writeを見ることができる。 -v オプションはread/write抜きになる。
# diskinfo -c /dev/ada0
/dev/ada0
512 # sectorsize
250059350016 # mediasize in bytes (232G)
488397168 # mediasize in sectors
0 # stripesize
0 # stripeoffset
484521 # Cylinders according to firmware.
16 # Heads according to firmware.
63 # Sectors according to firmware.
Z3TFKXBE # Disk ident.
I/O command overhead:
time to read 10MB block 0.123508 sec = 0.006 msec/sector
time to read 20480 sectors 2.671287 sec = 0.130 msec/sector
calculated command overhead = 0.124 msec/sector
# diskinfo -c /dev/ada3
/dev/ada3
512 # sectorsize
3000592982016 # mediasize in bytes (2.7T)
5860533168 # mediasize in sectors
4096 # stripesize
0 # stripeoffset
5814021 # Cylinders according to firmware.
16 # Heads according to firmware.
63 # Sectors according to firmware.
34Q4K0A6FSDA # Disk ident.
I/O command overhead:
time to read 10MB block 0.055544 sec = 0.003 msec/sector
time to read 20480 sectors 1.076329 sec = 0.053 msec/sector
calculated command overhead = 0.050 msec/sector
camcontrol identify [device]
ファームウェアやシリアルナンバーなど一番細かい情報が出せるコマンド。
# camcontrol identify /dev/ada0
pass0: <VB0250EAVER HPG9> ATA-8 SATA 2.x device
pass0: 300.000MB/s transfers (SATA 2.x, UDMA5, PIO 8192bytes)
protocol ATA/ATAPI-8 SATA 2.x
device model VB0250EAVER
firmware revision HPG9
serial number Z3XXXXX
WWN 5000c5005005b05d
cylinders 16383
heads 16
sectors/track 63
sector size logical 512, physical 512, offset 0
LBA supported 268435455 sectors
LBA48 supported 488397168 sectors
PIO supported PIO4
DMA supported WDMA2 UDMA5
media RPM 7200
Feature Support Enabled Value Vendor
read ahead yes yes
write cache yes yes
flush cache yes yes
overlap no
Tagged Command Queuing (TCQ) no no
Native Command Queuing (NCQ) yes 32 tags
SMART yes yes
microcode download yes yes
security no no
power management yes yes
advanced power management no no
automatic acoustic management no no
media status notification no no
power-up in Standby no no
write-read-verify yes no 0/0x0
unload no no
free-fall no no
Data Set Management (DSM/TRIM) no
Host Protected Area (HPA) no
# camcontrol identify /dev/ada3
pass3: <TOSHIBA MD04ACA300 FP1A> ATA-8 SATA 3.x device
pass3: 300.000MB/s transfers (SATA 2.x, UDMA5, PIO 8192bytes)
protocol ATA/ATAPI-8 SATA 3.x
device model TOSHIBA MD04ACA300
firmware revision FP1A
serial number 3XXXXXXXXX
WWN 500003956b883858
cylinders 16383
heads 16
sectors/track 63
sector size logical 512, physical 4096, offset 0
LBA supported 268435455 sectors
LBA48 supported 5860533168 sectors
PIO supported PIO4
DMA supported WDMA2 UDMA5
media RPM 7200
Feature Support Enabled Value Vendor
read ahead yes yes
write cache yes yes
flush cache yes yes
overlap no
Tagged Command Queuing (TCQ) no no
Native Command Queuing (NCQ) yes 32 tags
SMART yes yes
microcode download yes yes
security yes no
power management yes yes
advanced power management yes yes 128/0x80
automatic acoustic management no no
media status notification no no
power-up in Standby no no
write-read-verify no no
unload no no
free-fall no no
Data Set Management (DSM/TRIM) no
Host Protected Area (HPA) yes no 5860533168/5860533168
HPA - Security no