Custom CoreStorage (Fusion Drive) is NOT a Fusion Drive

Discussion in 'OS X Yosemite (10.10)' started by perfektionsloge, Nov 9, 2014.

  1. perfektionsloge macrumors newbie

    Joined:
    Nov 9, 2014
    #1
    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
     
  2. grahamperrin macrumors 601

    grahamperrin

    Joined:
    Jun 8, 2007
    #2
    Please paste to this topic, as code, output from the following commands:

    diskutil list

    diskutil coreStorage list
     
  3. perfektionsloge thread starter macrumors newbie

    Joined:
    Nov 9, 2014
    #3
    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
     
  4. grahamperrin macrumors 601

    grahamperrin

    Joined:
    Jun 8, 2007
    #4
    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.
     
  5. perfektionsloge thread starter macrumors newbie

    Joined:
    Nov 9, 2014
    #5
    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
     
  6. grahamperrin macrumors 601

    grahamperrin

    Joined:
    Jun 8, 2007
    #6
    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).
     
  7. conflict1967 macrumors newbie

    Joined:
    Oct 4, 2015
    #7
    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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