I bought a Drobo Version 2 with USB2.0 and Firewire 800. Additionally I got two 1 TB Samsung HD103UJ drives. Installed fine and running like charm. But after putting a lot of data on it, the filesystem corrupted. I managed to get the most data back with the help of testdrive and Photorec.

So I tried again with a lunsize of 2TB and a freshly formatted ext3. I used the droboutils from sourceforge to access the drobo itself. I again copied stuff on to the drobo and it work without errors.

But I have had to reboot my linux host due to kernel update and the filesystem, which was unmounted correctly, was corrupted again and fsck.ext3 was not able to check it. I again spent a week of testdrive and photorec on the device. But my data was gone. A loss of about 600 GByte. Great pain.

[Update: See Drobo currently stable]

I bought a Drobo Version 2 with USB2.0 and Firewire 800. Additionally I got two 1 TB Samsung HD103UJ drives. Installed fine and running like charm. But after putting a lot of data on it, the filesystem corrupted. I managed to get the most data back with the help of testdrive and Photorec. So I tried again with a lunsize of 2TB and a freshly formatted ext3. I used the droboutils from sourceforge to access the drobo itself. I again copied stuff on to the drobo and it work without errors. But I have had to reboot my linux host due to kernel update and the filesystem, which was unmounted correctly, was corrupted again and fsck.ext3 was not able to check it. I again spent a week of testdrive and photorec on the device. But my data was gone. A loss of about 600 GByte. Great pain.
[Update: See Drobo currently stable]

So I start to disbelieve in the stability of this solution. But before I will give in, I’d like to test this out, if this is reproducable. So this is what will follow now.

The system setup is:

• Ubuntu 7.10 (Linux TheCore 2.6.22-16-generic #1 SMP Mon Nov 24 18:28:27 GMT 2008 i686 GNU/Linux)
• droboutils Version 0.4.0
• drobo says firmware revision:  1 . 248 ( 15408 ) was built:  Dec  2 2008,10:24:08
• drobo connected with USB

I will start with the following scenario:

1. Format the drobo with a lunsize of 2TB with the droboview
2. Write down the layout of the fdisk, status of the drobo and everything.
3. Put about 367 GBytes of data on to the share.
4. Write down the layout of the fdisk, status of the drobo and everything.
5. Unmount the share
6. Shutdown the drobo
7. Restart the drobo
8. Write down the layout of the fdisk, status of the drobo and everything.
9. Try to mount the drobo
10. Write down the layout of the fdisk, status of the drobo and everything.

So here we go:

1. Format the drobo with a lunsize of 2TB with the droboview

I started the format (see picture) and see output on console.


Clicked format...
Really formatting...
Information: Vergessen Sie nicht, gegebenenfalls /etc/fstab zu ändern.

Disk /dev/sdd: 2199GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt

Anzahl Beginn End Size File system Name Flags
1 17,4kB 2199GB 2199GB ext3 ext2

Information: Vergessen Sie nicht, gegebenenfalls /etc/fstab zu ändern.

mke2fs 1.40.2 (12-Jul-2007)
Dateisystem-Label=Drobo01
OS-Typ: Linux
Blockgröße=4096 (log=2)
Fragmentgröße=4096 (log=2)
8388608 Inodes, 536870886 Blöcke
0 Blöcke (0.00%) reserviert für den Superuser
erster Datenblock=0
16384 Blockgruppen
32768 Blöcke pro Gruppe, 32768 Fragmente pro Gruppe
512 Inodes pro Gruppe
Superblock-Sicherungskopien gespeichert in den Blöcken:
32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,
4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968,
102400000, 214990848, 512000000

Schreibe Inode-Tabellen: erledigt
Erstelle Journal (32768 Blöcke): erledigt
Schreibe Superblöcke und Dateisystem-Accountinginformationen: erledigt

Das Dateisystem wird automatisch alle 37 Mounts bzw. alle 180 Tage überprüft,
je nachdem, was zuerst eintritt. Veränderbar mit tune2fs -c oder -t .
it took: 126 updates to run

2. Write down the layout of the fdisk, status of the drobo

fdisk -l /dev/sdd

Disk /dev/sdd: 2199 GB, 2199020382720 bytes
255 heads, 63 sectors/track, 267349 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot Start End Blocks Id System
/dev/sdd1 1 267350 2147488843 83 Linux

drobom info

———————————————————
Info about Drobo /dev/sdd
———————————————————

query config result:
(4, 16, 2199023185408L)
max lun size is: 2199023185408

query capacity result:
(254585634816L, 739456548864L, 994042183680L, 0)
Physical space… used: 739456548864 free: 254585634816 Total: 994042183680

query protocol version result:
(0, 11)

query settings result:
(1231036730, 8, ‘Drobo disk pack’)
Drobo time is Sun Jan 4 03:38:50 2009

query slotinfo result: number of slots:
(0, 1000204886016L, 0, ‘green’, ‘SAMSUNG HD103UJ’, ‘SAMSUNG HD103UJ’)
(1, 1000204886016L, 0, ‘green’, ‘SAMSUNG HD103UJ’, ‘SAMSUNG HD103UJ’)
(2, 0, 0, ‘gray’, ”, ”)
(3, 0, 0, ‘gray’, ”, ”)

query firmware result:
(1, 248, 15408, 13, 6, ‘Dec 2 2008,10:24:08’, ‘ArmMarvell’, ‘1.3.0’, [‘NO_AUTO_REBOOT’, ‘NO_FAT32_FORMAT’, ‘USED_CAPACITY_FROM_HOST’, ‘DISKPACKSTATUS’, ‘ENCRYPT_NOHEADER’, ‘CMD_STATUS_QUERIABLE’, ‘VARIABLE_LUN_SIZE_1_16’, ‘PARTITION_LUN_GPT_MBR’, ‘FAT32_FORMAT_VOLNAME’, ‘SUPPORTS_DROBOSHARE’, ‘SUPPORTS_NEW_LUNINFO2’])
drobo says firmware revision: 1 . 248 ( 15408 ) was built: Dec 2 2008,10:24:08

query status result:
([], 0)

query options result:
(1, 0, 0)

query luninfo result:
[(0, 2199023185920L, 739456548864L, ‘GPT’, [‘EXT3’])]

———————————————————

e2label /dev/sdd1
Drobo01


mount /Drobo
dmesg tells:
[2892940.559990] kjournald starting. Commit interval 5 seconds
[2892940.566606] EXT3 FS on sdd1, internal journal
[2892940.566614] EXT3-fs: mounted filesystem with ordered data mode.
df -h /Drobo
Dateisystem Größe Benut Verf Ben% Eingehängt auf
/dev/sdd1 2,0T 129M 2,0T 1% /Drobo


3. Put about 367 GBytes of data on to the share.

This takes longer…
(See “Drobo during upload (1))
df -h /Drobo
Dateisystem Größe Benut Verf Ben% Eingehängt auf
/dev/sdd1 2,0T 178G 1,9T 9% /Drobo

But the droboview tells its getting less?

….and longer…. (See “Drobo during upload (2))
df -h /Drobo
Dateisystem Größe Benut Verf Ben% Eingehängt auf
/dev/sdd1 2,0T 184G 1,9T 9% /Drobo


df -h /Drobo; drobom status
Dateisystem Größe Benut Verf Ben% Eingehängt auf
/dev/sdd1 2,0T 189G 1,9T 10% /Drobo
/dev/sdd 20% full - ([], 0)

df -h /Drobo; drobom status
Dateisystem Größe Benut Verf Ben% Eingehängt auf
/dev/sdd1 2,0T 340G 1,7T 17% /Drobo
/dev/sdd 36% full - ([], 0)

It’s done

sent 393106561468 bytes received 7248 bytes 9207213.14 bytes/sec
total size is 393058566695 speedup is 1.00
real 711m35.095s
user 54m55.106s
sys 41m17.235s


4. Write down the layout of the fdisk, status of the drobo


df -h /Drobo; drobom status
Dateisystem Größe Benut Verf Ben% Eingehängt auf
/dev/sdd1 2,0T 367G 1,7T 18% /Drobo
/dev/sdd 39% full - ([], 0)

The correlation between 39% full and the four blue leds on front of the drobo match with the 18% of the filesystem. To have the full 2T available I would need to install two more 1TB disk drives.so 2 times 18 is nearly the 39%.
After looking at the filesystem, let’s look at fdisk again.
fdisk -l /dev/sdd

Disk /dev/sdd: 2199 GB, 2199020382720 bytes
255 heads, 63 sectors/track, 267349 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot Start End Blocks Id System
/dev/sdd1 1 267350 2147488843 83 Linux

drobom info
———————————————————
Info about Drobo /dev/sdd
———————————————————

query config result:
(4, 16, 2199023185408L)
max lun size is: 2199023185408

query capacity result:
(599244521472L, 394797662208L, 994042183680L, 0)
Physical space… used: 394797662208 free: 599244521472 Total: 994042183680

query protocol version result:
(0, 11)

query settings result:
(1231099191, 8, ‘Drobo disk pack’)
Drobo time is Sun Jan 4 20:59:51 2009

query slotinfo result: number of slots:
(0, 1000204886016L, 0, ‘green’, ‘SAMSUNG HD103UJ’, ‘SAMSUNG HD103UJ’)
(1, 1000204886016L, 0, ‘green’, ‘SAMSUNG HD103UJ’, ‘SAMSUNG HD103UJ’)
(2, 0, 0, ‘gray’, ”, ”)
(3, 0, 0, ‘gray’, ”, ”)

query firmware result:
(1, 248, 15408, 13, 6, ‘Dec 2 2008,10:24:08’, ‘ArmMarvell’, ‘1.3.0’, [‘NO_AUTO_REBOOT’, ‘NO_FAT32_FORMAT’, ‘USED_CAPACITY_FROM_HOST’, ‘DISKPACKSTATUS’, ‘ENCRYPT_NOHEADER’, ‘CMD_STATUS_QUERIABLE’, ‘VARIABLE_LUN_SIZE_1_16’, ‘PARTITION_LUN_GPT_MBR’, ‘FAT32_FORMAT_VOLNAME’, ‘SUPPORTS_DROBOSHARE’, ‘SUPPORTS_NEW_LUNINFO2’])
drobo says firmware revision: 1 . 248 ( 15408 ) was built: Dec 2 2008,10:24:08

query status result:
([], 0)

query options result:
(1, 0, 0)

query luninfo result:
[(0, 2199023185920L, 394797662208L, ‘GPT’, [‘EXT3’])]

---------------------------------------------------------


5. Unmounting drobo

Worked without any warning

6. Shutdown drobo

drobom shutdown did shutdown the drobo. The green light of the drives and the blue lights went off. Underneath the front door the power led went orange.

I now unplug the usb from the computer.
[2960252.798494] usb 5-7: USB disconnect, address 45

7. Restart the drobo

Plugin the usb into the same usb port on the computer. Drobo boots normally green leds at the drives, green at power. Normal blue progress bar when starting. At the end 4 blue leds are on.

8. Write down the layout of the fdisk, status of the drobo and everything.


[2960347.287587] usb 5-7: new high speed USB device using ehci_hcd and address 46
[2960347.431672] usb 5-7: configuration #1 chosen from 1 choice
[2960347.452383] scsi40 : SCSI emulation for USB Mass Storage devices
[2960347.452433] usb-storage: device found at 46
[2960347.452436] usb-storage: waiting for device to settle before scanning
[2960352.865971] usb-storage: device scan complete
[2960352.869380] scsi 40:0:0:0: Direct-Access TRUSTED Mass Storage 2.00 PQ: 0 ANSI: 5
[2960352.870553] sd 40:0:0:0: [sdd] 4294967160 512-byte hardware sectors (2199023 MB)
[2960352.871583] sd 40:0:0:0: [sdd] Write Protect is off
[2960352.871589] sd 40:0:0:0: [sdd] Mode Sense: 03 00 00 00
[2960352.871593] sd 40:0:0:0: [sdd] Assuming drive cache: write through
[2960352.872447] sd 40:0:0:0: [sdd] 4294967160 512-byte hardware sectors (2199023 MB)
[2960352.873393] sd 40:0:0:0: [sdd] Write Protect is off
[2960352.873404] sd 40:0:0:0: [sdd] Mode Sense: 03 00 00 00
[2960352.873408] sd 40:0:0:0: [sdd] Assuming drive cache: write through
[2960352.873413] sdd: sdd1
[2960352.874464] sd 40:0:0:0: [sdd] Attached SCSI disk
[2960352.874531] sd 40:0:0:0: Attached scsi generic sg4 type 0
fdisk -l /dev/sdd

Disk /dev/sdd: 2199 GB, 2199020382720 bytes
255 heads, 63 sectors/track, 267349 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot Start End Blocks Id System
/dev/sdd1 1 267350 2147488843 83 Linux

drobom info
———————————————————
Info about Drobo /dev/sdd
———————————————————

query config result:
(4, 16, 2199023185408L)
max lun size is: 2199023185408

query capacity result:
(599244521472L, 394797662208L, 994042183680L, 0)
Physical space… used: 394797662208 free: 599244521472 Total: 994042183680

query protocol version result:
(0, 11)

query settings result:
(1231099865, 8, ‘Drobo disk pack’)
Drobo time is Sun Jan 4 21:11:05 2009

query slotinfo result: number of slots:
(0, 1000204886016L, 0, ‘green’, ‘SAMSUNG HD103UJ’, ‘SAMSUNG HD103UJ’)
(1, 1000204886016L, 0, ‘green’, ‘SAMSUNG HD103UJ’, ‘SAMSUNG HD103UJ’)
(2, 0, 0, ‘gray’, ”, ”)
(3, 0, 0, ‘gray’, ”, ”)

query firmware result:
(1, 248, 15408, 13, 6, ‘Dec 2 2008,10:24:08’, ‘ArmMarvell’, ‘1.3.0’, [‘NO_AUTO_REBOOT’, ‘NO_FAT32_FORMAT’, ‘USED_CAPACITY_FROM_HOST’, ‘DISKPACKSTATUS’, ‘ENCRYPT_NOHEADER’, ‘CMD_STATUS_QUERIABLE’, ‘VARIABLE_LUN_SIZE_1_16’, ‘PARTITION_LUN_GPT_MBR’, ‘FAT32_FORMAT_VOLNAME’, ‘SUPPORTS_DROBOSHARE’, ‘SUPPORTS_NEW_LUNINFO2’])
drobo says firmware revision: 1 . 248 ( 15408 ) was built: Dec 2 2008,10:24:08

query status result:

([], 0)

query options result:
(1, 0, 0)

query luninfo result:
[(0, 2199023185920L, 394797662208L, ‘GPT’, [‘EXT3’])]

---------------------------------------------------------


9. Try to mount the drobo

This time it worked without a problem. But I will now wait a week and restart at step 4.

mount /Drobo
[2960591.116900] kjournald starting. Commit interval 5 seconds
[2960591.126349] EXT3 FS on sdd1, internal journal
[2960591.126359] EXT3-fs: mounted filesystem with ordered data mode.

10. Write down the layout of the fdisk, status of the drobo and everything.

df -h /Drobo/;drobom status
Dateisystem Größe Benut Verf Ben% Eingehängt auf
/dev/sdd1 2,0T 367G 1,7T 18% /Drobo
/dev/sdd 39% full - ([], 0)


11. Putting more data on to the drobo

I just tried to make more data with read and write by just copying the data on the drobo.
time cp -r 367GB 367GB_2
df -h /Drobo/; drobom status
Dateisystem Größe Benut Verf Ben% Eingehängt auf
/dev/sdd1 2,0T 893G 1,2T 44% /Drobo
/dev/sdd 96% full - (['Red alert', 'Yellow alert'], 0)
So I start to disbelieve in the stability of this solution. But before I will give in, I’d like to test this out, if this is reproducable. So this is what will follow now. The system setup is:

• Ubuntu 7.10 (Linux TheCore 2.6.22-16-generic #1 SMP Mon Nov 24 18:28:27 GMT 2008 i686 GNU/Linux)
• droboutils Version 0.4.0
• drobo says firmware revision:  1 . 248 ( 15408 ) was built:  Dec  2 2008,10:24:08
• drobo connected with USB

I will start with the following scenario:

1. Format the drobo with a lunsize of 2TB with the droboview
2. Write down the layout of the fdisk, status of the drobo and everything.
3. Put about 367 GBytes of data on to the share.
4. Write down the layout of the fdisk, status of the drobo and everything.
5. Unmount the share
6. Shutdown the drobo
7. Restart the drobo
8. Write down the layout of the fdisk, status of the drobo and everything.
9. Try to mount the drobo
10. Write down the layout of the fdisk, status of the drobo and everything.

So here we go:

1. Format the drobo with a lunsize of 2TB with the droboview

I started the format (see picture) and see output on console.

Clicked format... Really formatting... Information: Vergessen Sie nicht, gegebenenfalls /etc/fstab zu ändern. Disk /dev/sdd: 2199GB Sector size (logical/physical): 512B/512B Partition Table: gpt Anzahl Beginn End Size File system Name Flags 1 17,4kB 2199GB 2199GB ext3 ext2 Information: Vergessen Sie nicht, gegebenenfalls /etc/fstab zu ändern. mke2fs 1.40.2 (12-Jul-2007) Dateisystem-Label=Drobo01 OS-Typ: Linux Blockgröße=4096 (log=2) Fragmentgröße=4096 (log=2) 8388608 Inodes, 536870886 Blöcke 0 Blöcke (0.00%) reserviert für den Superuser erster Datenblock=0 16384 Blockgruppen 32768 Blöcke pro Gruppe, 32768 Fragmente pro Gruppe 512 Inodes pro Gruppe Superblock-Sicherungskopien gespeichert in den Blöcken: 32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208, 4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968, 102400000, 214990848, 512000000 Schreibe Inode-Tabellen: erledigt Erstelle Journal (32768 Blöcke): erledigt Schreibe Superblöcke und Dateisystem-Accountinginformationen: erledigt Das Dateisystem wird automatisch alle 37 Mounts bzw. alle 180 Tage überprüft, je nachdem, was zuerst eintritt. Veränderbar mit tune2fs -c oder -t . it took: 126 updates to run

2. Write down the layout of the fdisk, status of the drobo

fdisk -l /dev/sdd Disk /dev/sdd: 2199 GB, 2199020382720 bytes 255 heads, 63 sectors/track, 267349 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/sdd1 1 267350 2147488843 83 Linux drobom info

——————————————————— Info about Drobo /dev/sdd ——————————————————— query config result: (4, 16, 2199023185408L) max lun size is: 2199023185408 query capacity result: (254585634816L, 739456548864L, 994042183680L, 0) Physical space… used: 739456548864 free: 254585634816 Total: 994042183680 query protocol version result: (0, 11) query settings result: (1231036730, 8, ‘Drobo disk pack’) Drobo time is Sun Jan 4 03:38:50 2009 query slotinfo result: number of slots: (0, 1000204886016L, 0, ‘green’, ‘SAMSUNG HD103UJ’, ‘SAMSUNG HD103UJ’) (1, 1000204886016L, 0, ‘green’, ‘SAMSUNG HD103UJ’, ‘SAMSUNG HD103UJ’) (2, 0, 0, ‘gray’, ”, ”) (3, 0, 0, ‘gray’, ”, ”) query firmware result: (1, 248, 15408, 13, 6, ‘Dec 2 2008,10:24:08’, ‘ArmMarvell’, ‘1.3.0’, [‘NO_AUTO_REBOOT’, ‘NO_FAT32_FORMAT’, ‘USED_CAPACITY_FROM_HOST’, ‘DISKPACKSTATUS’, ‘ENCRYPT_NOHEADER’, ‘CMD_STATUS_QUERIABLE’, ‘VARIABLE_LUN_SIZE_1_16’, ‘PARTITION_LUN_GPT_MBR’, ‘FAT32_FORMAT_VOLNAME’, ‘SUPPORTS_DROBOSHARE’, ‘SUPPORTS_NEW_LUNINFO2’]) drobo says firmware revision: 1 . 248 ( 15408 ) was built: Dec 2 2008,10:24:08 query status result: ([], 0) query options result: (1, 0, 0) query luninfo result: [(0, 2199023185920L, 739456548864L, ‘GPT’, [‘EXT3’])] ——————————————————— e2label /dev/sdd1 Drobo01 mount /Drobo dmesg tells: [2892940.559990] kjournald starting. Commit interval 5 seconds [2892940.566606] EXT3 FS on sdd1, internal journal [2892940.566614] EXT3-fs: mounted filesystem with ordered data mode. df -h /Drobo Dateisystem Größe Benut Verf Ben% Eingehängt auf /dev/sdd1 2,0T 129M 2,0T 1% /Drobo

3. Put about 367 GBytes of data on to the share.

This takes longer… (See “Drobo during upload (1)) df -h /Drobo Dateisystem Größe Benut Verf Ben% Eingehängt auf /dev/sdd1 2,0T 178G 1,9T 9% /Drobo But the droboview tells its getting less? ….and longer…. (See “Drobo during upload (2)) df -h /Drobo Dateisystem Größe Benut Verf Ben% Eingehängt auf /dev/sdd1 2,0T 184G 1,9T 9% /Drobo

df -h /Drobo; drobom status Dateisystem Größe Benut Verf Ben% Eingehängt auf /dev/sdd1 2,0T 189G 1,9T 10% /Drobo /dev/sdd 20% full - ([], 0) df -h /Drobo; drobom status Dateisystem Größe Benut Verf Ben% Eingehängt auf /dev/sdd1 2,0T 340G 1,7T 17% /Drobo /dev/sdd 36% full - ([], 0) It’s done sent 393106561468 bytes received 7248 bytes 9207213.14 bytes/sec total size is 393058566695 speedup is 1.00 real 711m35.095s user 54m55.106s sys 41m17.235s

4. Write down the layout of the fdisk, status of the drobo

df -h /Drobo; drobom status Dateisystem Größe Benut Verf Ben% Eingehängt auf /dev/sdd1 2,0T 367G 1,7T 18% /Drobo /dev/sdd 39% full - ([], 0) The correlation between 39% full and the four blue leds on front of the drobo match with the 18% of the filesystem. To have the full 2T available I would need to install two more 1TB disk drives.so 2 times 18 is nearly the 39%. After looking at the filesystem, let’s look at fdisk again. fdisk -l /dev/sdd Disk /dev/sdd: 2199 GB, 2199020382720 bytes 255 heads, 63 sectors/track, 267349 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/sdd1 1 267350 2147488843 83 Linux drobom info ——————————————————— Info about Drobo /dev/sdd ——————————————————— query config result: (4, 16, 2199023185408L) max lun size is: 2199023185408 query capacity result: (599244521472L, 394797662208L, 994042183680L, 0) Physical space… used: 394797662208 free: 599244521472 Total: 994042183680 query protocol version result: (0, 11) query settings result: (1231099191, 8, ‘Drobo disk pack’) Drobo time is Sun Jan 4 20:59:51 2009 query slotinfo result: number of slots: (0, 1000204886016L, 0, ‘green’, ‘SAMSUNG HD103UJ’, ‘SAMSUNG HD103UJ’) (1, 1000204886016L, 0, ‘green’, ‘SAMSUNG HD103UJ’, ‘SAMSUNG HD103UJ’) (2, 0, 0, ‘gray’, ”, ”) (3, 0, 0, ‘gray’, ”, ”) query firmware result: (1, 248, 15408, 13, 6, ‘Dec 2 2008,10:24:08’, ‘ArmMarvell’, ‘1.3.0’, [‘NO_AUTO_REBOOT’, ‘NO_FAT32_FORMAT’, ‘USED_CAPACITY_FROM_HOST’, ‘DISKPACKSTATUS’, ‘ENCRYPT_NOHEADER’, ‘CMD_STATUS_QUERIABLE’, ‘VARIABLE_LUN_SIZE_1_16’, ‘PARTITION_LUN_GPT_MBR’, ‘FAT32_FORMAT_VOLNAME’, ‘SUPPORTS_DROBOSHARE’, ‘SUPPORTS_NEW_LUNINFO2’]) drobo says firmware revision: 1 . 248 ( 15408 ) was built: Dec 2 2008,10:24:08 query status result: ([], 0) query options result: (1, 0, 0) query luninfo result: [(0, 2199023185920L, 394797662208L, ‘GPT’, [‘EXT3’])] ---------------------------------------------------------

5. Unmounting drobo

Worked without any warning

6. Shutdown drobo

drobom shutdown did shutdown the drobo. The green light of the drives and the blue lights went off. Underneath the front door the power led went orange. I now unplug the usb from the computer. [2960252.798494] usb 5-7: USB disconnect, address 45

7. Restart the drobo

Plugin the usb into the same usb port on the computer. Drobo boots normally green leds at the drives, green at power. Normal blue progress bar when starting. At the end 4 blue leds are on.

8. Write down the layout of the fdisk, status of the drobo and everything.

[2960347.287587] usb 5-7: new high speed USB device using ehci_hcd and address 46 [2960347.431672] usb 5-7: configuration #1 chosen from 1 choice [2960347.452383] scsi40 : SCSI emulation for USB Mass Storage devices [2960347.452433] usb-storage: device found at 46 [2960347.452436] usb-storage: waiting for device to settle before scanning [2960352.865971] usb-storage: device scan complete [2960352.869380] scsi 40:0:0:0: Direct-Access TRUSTED Mass Storage 2.00 PQ: 0 ANSI: 5 [2960352.870553] sd 40:0:0:0: [sdd] 4294967160 512-byte hardware sectors (2199023 MB) [2960352.871583] sd 40:0:0:0: [sdd] Write Protect is off [2960352.871589] sd 40:0:0:0: [sdd] Mode Sense: 03 00 00 00 [2960352.871593] sd 40:0:0:0: [sdd] Assuming drive cache: write through [2960352.872447] sd 40:0:0:0: [sdd] 4294967160 512-byte hardware sectors (2199023 MB) [2960352.873393] sd 40:0:0:0: [sdd] Write Protect is off [2960352.873404] sd 40:0:0:0: [sdd] Mode Sense: 03 00 00 00 [2960352.873408] sd 40:0:0:0: [sdd] Assuming drive cache: write through [2960352.873413] sdd: sdd1 [2960352.874464] sd 40:0:0:0: [sdd] Attached SCSI disk [2960352.874531] sd 40:0:0:0: Attached scsi generic sg4 type 0 fdisk -l /dev/sdd Disk /dev/sdd: 2199 GB, 2199020382720 bytes 255 heads, 63 sectors/track, 267349 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/sdd1 1 267350 2147488843 83 Linux drobom info ——————————————————— Info about Drobo /dev/sdd ——————————————————— query config result: (4, 16, 2199023185408L) max lun size is: 2199023185408 query capacity result: (599244521472L, 394797662208L, 994042183680L, 0) Physical space… used: 394797662208 free: 599244521472 Total: 994042183680 query protocol version result: (0, 11) query settings result: (1231099865, 8, ‘Drobo disk pack’) Drobo time is Sun Jan 4 21:11:05 2009 query slotinfo result: number of slots: (0, 1000204886016L, 0, ‘green’, ‘SAMSUNG HD103UJ’, ‘SAMSUNG HD103UJ’) (1, 1000204886016L, 0, ‘green’, ‘SAMSUNG HD103UJ’, ‘SAMSUNG HD103UJ’) (2, 0, 0, ‘gray’, ”, ”) (3, 0, 0, ‘gray’, ”, ”) query firmware result: (1, 248, 15408, 13, 6, ‘Dec 2 2008,10:24:08’, ‘ArmMarvell’, ‘1.3.0’, [‘NO_AUTO_REBOOT’, ‘NO_FAT32_FORMAT’, ‘USED_CAPACITY_FROM_HOST’, ‘DISKPACKSTATUS’, ‘ENCRYPT_NOHEADER’, ‘CMD_STATUS_QUERIABLE’, ‘VARIABLE_LUN_SIZE_1_16’, ‘PARTITION_LUN_GPT_MBR’, ‘FAT32_FORMAT_VOLNAME’, ‘SUPPORTS_DROBOSHARE’, ‘SUPPORTS_NEW_LUNINFO2’]) drobo says firmware revision: 1 . 248 ( 15408 ) was built: Dec 2 2008,10:24:08 query status result: ([], 0) query options result: (1, 0, 0) query luninfo result: [(0, 2199023185920L, 394797662208L, ‘GPT’, [‘EXT3’])] ---------------------------------------------------------

9. Try to mount the drobo

This time it worked without a problem. But I will now wait a week and restart at step 4. mount /Drobo [2960591.116900] kjournald starting. Commit interval 5 seconds [2960591.126349] EXT3 FS on sdd1, internal journal [2960591.126359] EXT3-fs: mounted filesystem with ordered data mode.

10. Write down the layout of the fdisk, status of the drobo and everything.

df -h /Drobo/;drobom status Dateisystem Größe Benut Verf Ben% Eingehängt auf /dev/sdd1 2,0T 367G 1,7T 18% /Drobo /dev/sdd 39% full - ([], 0)

11. Putting more data on to the drobo

I just tried to make more data with read and write by just copying the data on the drobo. time cp -r 367GB 367GB_2 df -h /Drobo/; drobom status Dateisystem Größe Benut Verf Ben% Eingehängt auf /dev/sdd1 2,0T 893G 1,2T 44% /Drobo /dev/sdd 96% full - (['Red alert', 'Yellow alert'], 0)