给你看一个iostat的截图,dd在写文件的时候直接都去了disk1那是hdd不是ssd
disk0 disk1 cpu load average
KB/t tps MB/s KB/t tps MB/s us sy id 1m 5m 15m
0.00 0 0.00 582.49 119 67.42 7 6 87 1.36 1.58 1.46
0.00 0 0.00 757.00 98 72.61 8 6 86 1.36 1.58 1.46
7.88 45 0.35 279.28 123 33.41 5 4 91 1.49 1.61 1.47
8.00 26 0.20 119.29 251 29.30 4 4 93 1.53 1.61 1.47
0.00 0 0.00 518.90 93 47.11 2 3 95 1.53 1.61 1.47
0.00 0 0.00 70.77 841 58.15 3 5 92 1.57 1.62 1.4
/dev/disk0
#: TYPE NAME SIZE
IDENTIFIER
0: GUID_partition_scheme *240.1 GB disk0
1: EFI EFI 209.7 MB disk0s1
2: Apple_CoreStorage 239.7 GB disk0s2
3: Apple_Boot Boot OS X 134.2 MB disk0s3
/dev/disk1
#: TYPE NAME SIZE
IDENTIFIER
0: GUID_partition_scheme *1.0 TB disk1
1: EFI EFI 209.7 MB disk1s1
2: Apple_CoreStorage 999.3 GB disk1s2
3: Apple_Boot Recovery HD 650.1 MB disk1s3
/dev/disk2
#: TYPE NAME SIZE
IDENTIFIER
0: Apple_HFS Macintosh HD *1.2 TB disk2
Logical Volume on disk0s2, disk1s2
908F662A-87F3-49AC-831D-B406242F24DE
Unencrypted Fusion Drive
=========================================================
Name: Fusion
Status: Online
Size: 1239058333696 B (1.2 TB)
Free Space: 106496 B (106.5 KB)
|
+-< Physical Volume F3630933-B142-43B5-82E0-983ABA5002E1
| ----------------------------------------------------
| Index: 0
| Disk: disk0s2
| Status: Online
| Size: 239713435648 B (239.7 GB)
|
+-< Physical Volume 54998E47-B222-4B26-AF1A-8F6E889EF3D5
| ----------------------------------------------------
| Index: 1
| Disk: disk1s2
| Status: Online
| Size: 999344898048 B (999.3 GB)
|
+-> Logical Volume Family 3FAD978E-9998-4167-8440-D7DE85D6E326
----------------------------------------------------------
Encryption Status: Unlocked
Encryption Type: None
Conversion Status: NoConversion
Conversion Direction: -none-
Has Encrypted Extents: No
Fully Secure: No
Passphrase Required: No
|
+-> Logical Volume 908F662A-87F3-49AC-831D-B406242F24DE
---------------------------------------------------
Disk: disk2
Status: Online
Size (Total): 1228394725376 B (1.2 TB)
Conversion Progress: -none-
Revertible: No
LV Name: Macintosh HD
Volume Name: Macintosh HD
Content Hint: Apple_HFS