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Custom CoreStorage (Fusion Drive) is NOT a Fusion Drive

P

perfektionsloge

macrumors newbie
Original poster
Nov 9, 2014
3
0
Hi,
I've created a custom Fusion Drive with two drives: Samsung SSD 840 Pro and Hitachi HTS545050B9SA0. I checked the CoreStorage with diskutil via command line and found out that this logical volume group is not a Fusion Drive:

caribou:~ martin$ diskutil cs info 3869BD2E-AB5E-4909-B1F1-DE9E04857B48
Core Storage Properties:
Role: Logical Volume Group (LVG)
UUID: 3869BD2E-AB5E-4909-B1F1-DE9E04857B48
LVG Name: FusionDrive
LVG Version: 1
LVG Size: 999011876864 B
LVG Free Space: 8343552 B
LVG Status: Online
LVG Sparse: No
Fusion Drive: No

After that I've created a new LVG via the recovery partition but I'm not able to create a real Fusion Drive. I don't know why...
These were the steps:

diskutil coreStorage create FusionDrive drive0 drive1
diskutil coreStorage createVolume 3869BD2E-AB5E-4909-B1F1-DE9E04857B48 jhfs+ "caribou HD" 100%

Martin

MacBook Pro Mid-2010 (MacBookPro6,2), OS X 10.10
 
Please paste to this topic, as code, output from the following commands:

diskutil list

diskutil coreStorage list
 
grahamperrin said:
Please paste to this topic, as code, output from the following commands:

diskutil list

diskutil coreStorage list
Click to expand...

diskutil list
/dev/disk0
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *500.1 GB disk0
1: EFI EFI 209.7 MB disk0s1
2: Apple_CoreStorage 499.8 GB disk0s2
3: Apple_Boot Boot OS X 134.2 MB disk0s3
/dev/disk1
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *500.1 GB disk1
1: EFI EFI 209.7 MB disk1s1
2: Apple_CoreStorage 499.2 GB disk1s2
3: Apple_Boot Recovery HD 650.1 MB disk1s3
/dev/disk2
#: TYPE NAME SIZE IDENTIFIER
0: Apple_HFS caribou HD *998.4 GB disk2
Logical Volume on disk0s2, disk1s2
1B00ADAF-E406-4583-87A7-3DEDBDB84A71
Unencrypted

diskutil coreStorage list
CoreStorage logical volume groups (1 found)
|
+-- Logical Volume Group 3869BD2E-AB5E-4909-B1F1-DE9E04857B48
=========================================================
Name: FusionDrive
Status: Online
Size: 999011876864 B (999.0 GB)
Free Space: 8343552 B (8.3 MB)
|
+-< Physical Volume 60BE3DFC-6A9F-4812-BC5F-3EDD6C74401A
| ----------------------------------------------------
| Index: 0
| Disk: disk0s2
| Status: Online
| Size: 499763888128 B (499.8 GB)
|
+-< Physical Volume E026A35B-BB20-478D-BB88-E3CFD590A832
| ----------------------------------------------------
| Index: 1
| Disk: disk1s2
| Status: Online
| Size: 499247988736 B (499.2 GB)
|
+-> Logical Volume Family BA842B96-EEFC-4BE7-B3BA-75B73A907487
----------------------------------------------------------
Encryption Status: Unlocked
Encryption Type: None
Conversion Status: NoConversion
Conversion Direction: -none-
Has Encrypted Extents: No
Fully Secure: No
Passphrase Required: No
|
+-> Logical Volume 1B00ADAF-E406-4583-87A7-3DEDBDB84A71
---------------------------------------------------
Disk: disk2
Status: Online
Size (Total): 998365986816 B (998.4 GB)
Conversion Progress: -none-
Revertible: No
LV Name: caribou HD
Volume Name: caribou HD
Content Hint: Apple_HFS
 
Seeking additional information

Thanks. For clarity (as code):

Code: 
diskutil list
/dev/disk0
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *500.1 GB   disk0
   1:                        EFI EFI                     209.7 MB   disk0s1
   2:          Apple_CoreStorage                         499.8 GB   disk0s2
   3:                 Apple_Boot Boot OS X               134.2 MB   disk0s3
/dev/disk1
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *500.1 GB   disk1
   1:                        EFI EFI                     209.7 MB   disk1s1
   2:          Apple_CoreStorage                         499.2 GB   disk1s2
   3:                 Apple_Boot Recovery HD             650.1 MB   disk1s3
/dev/disk2
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:                  Apple_HFS caribou HD             *998.4 GB   disk2
                                 Logical Volume on disk0s2, disk1s2
                                 1B00ADAF-E406-4583-87A7-3DEDBDB84A71
                                 Unencrypted

diskutil coreStorage list
CoreStorage logical volume groups (1 found)
|
+-- Logical Volume Group 3869BD2E-AB5E-4909-B1F1-DE9E04857B48
    =========================================================
    Name:         FusionDrive
    Status:       Online
    Size:         999011876864 B (999.0 GB)
    Free Space:   8343552 B (8.3 MB)
    |
    +-< Physical Volume 60BE3DFC-6A9F-4812-BC5F-3EDD6C74401A
    |   ----------------------------------------------------
    |   Index:    0
    |   Disk:     disk0s2
    |   Status:   Online
    |   Size:     499763888128 B (499.8 GB)
    |
    +-< Physical Volume E026A35B-BB20-478D-BB88-E3CFD590A832
    |   ----------------------------------------------------
    |   Index:    1
    |   Disk:     disk1s2
    |   Status:   Online
    |   Size:     499247988736 B (499.2 GB)
    |
    +-> Logical Volume Family BA842B96-EEFC-4BE7-B3BA-75B73A907487
        ----------------------------------------------------------
        Encryption Status:       Unlocked
        Encryption Type:         None
        Conversion Status:       NoConversion
        Conversion Direction:    -none-
        Has Encrypted Extents:   No
        Fully Secure:            No
        Passphrase Required:     No
        |
        +-> Logical Volume 1B00ADAF-E406-4583-87A7-3DEDBDB84A71
            ---------------------------------------------------
            Disk:                  disk2
            Status:                Online
            Size (Total):          998365986816 B (998.4 GB)
            Conversion Progress:   -none-
            Revertible:            No
            LV Name:               caribou HD
            Volume Name:           caribou HD
            Content Hint:          Apple_HFS

(Hint: when replying, use the # button in the toolbar to format selected text as code.)

Now please paste to this topic – as code – Terminal outputs from seven more commands.

mount

qlmanage -m disks

diskutil info /dev/disk0

diskutil info /dev/disk1

diskutil info /dev/disk2

diskutil coreStorage info BA842B96-EEFC-4BE7-B3BA-75B73A907487

diskutil coreStorage info 1B00ADAF-E406-4583-87A7-3DEDBDB84A71

– thanks.
 
Code: 
mount
/dev/disk2 on / (hfs, local, journaled)
devfs on /dev (devfs, local, nobrowse)
map -hosts on /net (autofs, nosuid, automounted, nobrowse)
map auto_home on /home (autofs, automounted, nobrowse)
localhost:/0yIf5KQjk1VlOo0tG8w9N9 on /Volumes/MobileBackups (mtmfs, nosuid, read-only, nobrowse)
Code: 
qlmanage -m disks
disks:
	/: local fs
	/Volumes/MobileBackups: distant fs
	/home: distant fs
	/net: distant fs
Code: 
diskutil info /dev/disk0
   Device Identifier:        disk0
   Device Node:              /dev/disk0
   Part of Whole:            disk0
   Device / Media Name:      Samsung SSD 840 Series Media

   Volume Name:              Not applicable (no file system)

   Mounted:                  Not applicable (no file system)

   File System:              None

   Content (IOContent):      GUID_partition_scheme
   OS Can Be Installed:      No
   Media Type:               Generic
   Protocol:                 SATA
   SMART Status:             Verified

   Total Size:               500.1 GB (500107862016 Bytes) (exactly 976773168 512-Byte-Units)
   Volume Free Space:        Not applicable (no file system)
   Device Block Size:        512 Bytes

   Read-Only Media:          No
   Read-Only Volume:         Not applicable (no file system)
   Ejectable:                No

   Whole:                    Yes
   Internal:                 Yes
   Solid State:              Yes
   OS 9 Drivers:             No
   Low Level Format:         Not supported
Code: 
diskutil info /dev/disk1
   Device Identifier:        disk1
   Device Node:              /dev/disk1
   Part of Whole:            disk1
   Device / Media Name:      Hitachi HTS545050B9SA02 Media

   Volume Name:              Not applicable (no file system)

   Mounted:                  Not applicable (no file system)

   File System:              None

   Content (IOContent):      GUID_partition_scheme
   OS Can Be Installed:      No
   Media Type:               Generic
   Protocol:                 SATA
   SMART Status:             Verified

   Total Size:               500.1 GB (500107862016 Bytes) (exactly 976773168 512-Byte-Units)
   Volume Free Space:        Not applicable (no file system)
   Device Block Size:        512 Bytes

   Read-Only Media:          No
   Read-Only Volume:         Not applicable (no file system)
   Ejectable:                No

   Whole:                    Yes
   Internal:                 Yes
   Solid State:              No
   OS 9 Drivers:             No
   Low Level Format:         Not supported

Code: 
diskutil info /dev/disk2
   Device Identifier:        disk2
   Device Node:              /dev/disk2
   Part of Whole:            disk2
   Device / Media Name:      caribou HD

   Volume Name:              caribou HD

   Mounted:                  Yes
   Mount Point:              /

   File System Personality:  Journaled HFS+
   Type (Bundle):            hfs
   Name (User Visible):      Mac OS Extended (Journaled)
   Journal:                  Journal size 81920 KB at offset 0x1d15000
   Owners:                   Enabled

   Content (IOContent):      Apple_HFS
   OS Can Be Installed:      Yes
   Recovery Disk:            disk1s3
   Media Type:               Generic
   Protocol:                 SATA
   SMART Status:             Not Supported
   Volume UUID:              43846B19-5B3F-3BAD-8320-39BA4710A233
   Disk / Partition UUID:    1B00ADAF-E406-4583-87A7-3DEDBDB84A71

   Total Size:               998.4 GB (998365986816 Bytes) (exactly 1949933568 512-Byte-Units)
   Volume Free Space:        156.3 GB (156321300480 Bytes) (exactly 305315040 512-Byte-Units)
   Device Block Size:        512 Bytes
   Allocation Block Size:    4096 Bytes

   Read-Only Media:          No
   Read-Only Volume:         No
   Ejectable:                No

   Whole:                    Yes
   Internal:                 Yes
   Solid State:              Yes
   OS 9 Drivers:             No
   Low Level Format:         Not supported

   This disk is a Core Storage Logical Volume (LV).  Core Storage Information:
   LV UUID:                  1B00ADAF-E406-4583-87A7-3DEDBDB84A71
   LVF UUID:                 BA842B96-EEFC-4BE7-B3BA-75B73A907487
   LVG UUID:                 3869BD2E-AB5E-4909-B1F1-DE9E04857B48
   Fusion Drive:             No
   Encrypted:                No
Code: 
diskutil coreStorage info BA842B96-EEFC-4BE7-B3BA-75B73A907487
Core Storage Properties:
   Role:                       Logical Volume Family (LVF)
   UUID:                       BA842B96-EEFC-4BE7-B3BA-75B73A907487
   Parent LVG UUID:            3869BD2E-AB5E-4909-B1F1-DE9E04857B48
   LVF Encryption Status:      Unlocked
   LVF Encryption Type:        None
Code: 
diskutil coreStorage info 1B00ADAF-E406-4583-87A7-3DEDBDB84A71
Core Storage Properties:
   Role:                       Logical Volume (LV)
   UUID:                       1B00ADAF-E406-4583-87A7-3DEDBDB84A71
   Parent LVF UUID:            BA842B96-EEFC-4BE7-B3BA-75B73A907487
   Parent LVG UUID:            3869BD2E-AB5E-4909-B1F1-DE9E04857B48
   Device Identifier:          disk2
   LV Status:                  Online
   Conversion State:           NoConversion
   LV Conversion Progress:     100%
   Content Hint:               Apple_HFS
   LV Name:                    caribou HD
   Volume Name:                caribou HD
   LV Size:                    998365986816 B
 
diskutil(8) and strictly Fusion or FUSION (not fusion, not FusionDrive …)

A long shot (without spare internal disks, I might be unable to test this) …

With attention to uppercase characters, try recreating the LVG with a more specific name – Fusion or FUSION

References

Enabling OS X Fusion Drive - IT services - HIIT Wiki (2013-01-07)

Fusion Drive or not? - OSx86 10.9 (Mavericks) - InsanelyMac Forum (2014-08-26) in particular, http://www.insanelymac.com/forum/topic/300526-fusion-drive-or-not/?p=2056265:

"… I believe that CS treats the LVG 'FUSION' and 'fusion' differently then other names/tags and sets up the binding accordingly. …"​

The OS X manual page for diskutil(8) at manpagez.com (Apple's publication https://developer.apple.com/library/mac/documentation/Darwin/Reference/ManPages/man8/diskutil.8.html is currently not for OS X 10.10).
 
perfektionsloge said:
Hi,
I've created a custom Fusion Drive with two drives: Samsung SSD 840 Pro and Hitachi HTS545050B9SA0. I checked the CoreStorage with diskutil via command line and found out that this logical volume group is not a Fusion Drive:

caribou:~ martin$ diskutil cs info 3869BD2E-AB5E-4909-B1F1-DE9E04857B48
Core Storage Properties:
Role: Logical Volume Group (LVG)
UUID: 3869BD2E-AB5E-4909-B1F1-DE9E04857B48
LVG Name: FusionDrive
LVG Version: 1
LVG Size: 999011876864 B
LVG Free Space: 8343552 B
LVG Status: Online
LVG Sparse: No
Fusion Drive: No

After that I've created a new LVG via the recovery partition but I'm not able to create a real Fusion Drive. I don't know why...
These were the steps:

diskutil coreStorage create FusionDrive drive0 drive1
diskutil coreStorage createVolume 3869BD2E-AB5E-4909-B1F1-DE9E04857B48 jhfs+ "caribou HD" 100%

Martin

MacBook Pro Mid-2010 (MacBookPro6,2), OS X 10.10
Click to expand...

I appreciate this thread is slightly old, however this might still be useful to you and others, but I had similar issues that I was able to resolve today.

I've been trying to create a FUSION drive externally (my iMac has an internal one) leveraging a dual USB3 docking enclosure. No matte how I tried to "skin the cat" with the CoreStorage creation, I always got the same LVG Sparse and Fusion Drive equal to No. I tried the capitals for the volume name to be FUSION, on both the VolumeGroup and the Volume, without success.

I was able to succeed in creating a Fusion drive by moving my Hard Disk to a USB2 dock, while leaving my SSD in a USB3 dock. Obviously, USB2 is going to run a lot slower.

After building the Fusion drive in the normal way and using capital FUSION (for luck, maybe), the final diskutil cs info came out as LVG Sparse: Yes and Fusion Drive: Yes.

I've move the Hard Disk back to the USB3 docking enclosure and powered it on, it still says Yes to LVG Sparse and Fusion Drive. A technical result, at least.

So it seems that OS X needs to determine some kind of "performance" difference or a change in the controller type to be able to mark those drives as Fusion drives.

I guess if you're planning to do this as an internal drive and struggle, you could look at borrowing/buying some external USB2 & USB3 caddies.

Now that the drive is identified as a Fusion drive, I need to wait and see if it is going to perform like one.

Hope this provides some steering tips.

Cheers.
 
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