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[SOLVD]Could not find the root block device in X - Dell R210
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goatman
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Joined: 31 Aug 2014
Posts: 11

PostPosted: Sun Nov 16, 2014 3:46 am    Post subject: [SOLVD]Could not find the root block device in X - Dell R210 Reply with quote

Hello,

I am trying to install Gentoo on a remote Dell R210, and I am unable to boot in. To make matters worse, I couldn't do the installation from a gentoo CD because iDRAC couldn't handle the slowness of my connection, so installation was done from an Ubuntu rescue CD provided by the host. However, I am confident the installation is mostly fine.
Code:
Could not find the root block device in UUID=x


Fails with UUID, /dev/sdaX. I can't seen any drives in /dev/.
The drive configuration is: 2x 1tb in RADI0 and identified as "Dell Virtual Disk" in the POST screen.
[I am not allowed to change the config.]

This seems to be the same problem: https://forums.gentoo.org/viewtopic-t-816225.html
No solution is described other than "there were some stuff missing in the kernel".

Any ideas what this could be? I used genkernel.
Most certainly with the raid/fakeraid controller driver and the lack thereof, right?


lsmod from Ubuntu rescue CD:
Code:
Module                  Size  Used by
ipmi_si                53257  1
ipmi_devintf           17572  2
dell_rbu               14315  0
8021q                  24712  0
garp                   14384  1 8021q
stp                    12976  1 garp
mrp                    18778  1 8021q
llc                    14552  2 stp,garp
gpio_ich               13476  0
dcdbas                 14928  0
joydev                 17381  0
intel_powerclamp       14705  0
coretemp               13435  0
kvm_intel             143060  0
kvm                   451511  1 kvm_intel
mac_hid                13205  0
acpi_power_meter       18058  0
lpc_ich                21080  0
lp                     17759  0
parport                42348  1 lp
squashfs               48362  1
aufs                  202783  505
raid10                 48128  0
raid456                86484  0
async_raid6_recov      12984  1 raid456
async_memcpy           12762  1 raid456
async_pq               13365  1 raid456
async_xor              13160  2 async_pq,raid456
async_tx               13509  5 async_pq,raid456,async_xor,async_memcpy,async_raid6_recov
xor                    21411  1 async_xor
hid_generic            12548  0
raid6_pq               97812  2 async_pq,async_raid6_recov
raid1                  35530  0
raid0                  17842  0
multipath              13145  0
linear                 12894  0
mpt2sas               155572  1
ahci                   25819  0
bnx2                   85110  0
usbhid                 52616  0
libahci                32168  1 ahci
hid                   106148  2 hid_generic,usbhid
raid_class             13554  1 mpt2sas
scsi_transport_sas     41034  1 mpt2sas


lspci:
Code:
00:00.0 Host bridge: Intel Corporation Core Processor DRAM Controller (rev 18)
00:01.0 PCI bridge: Intel Corporation Core Processor PCI Express x16 Root Port (rev 18)
00:1a.0 USB controller: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller (rev 05)
00:1c.0 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 1 (rev 05)
00:1d.0 USB controller: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller (rev 05)
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev a5)
00:1f.0 ISA bridge: Intel Corporation 3400 Series Chipset LPC Interface Controller (rev 05)
00:1f.2 SATA controller: Intel Corporation 5 Series/3400 Series Chipset 6 port SATA AHCI Controller (rev 05)
01:00.0 Serial Attached SCSI controller: LSI Logic / Symbios Logic SAS2008 PCI-Express Fusion-MPT SAS-2 [Falcon] (rev 03)
02:00.0 Ethernet controller: Broadcom Corporation NetXtreme II BCM5716 Gigabit Ethernet (rev 20)
02:00.1 Ethernet controller: Broadcom Corporation NetXtreme II BCM5716 Gigabit Ethernet (rev 20)
03:03.0 VGA compatible controller: Matrox Electronics Systems Ltd. MGA G200eW WPCM450 (rev 0a)
ff:00.0 Host bridge: Intel Corporation Core Processor QuickPath Architecture Generic Non-core Registers (rev 05)
ff:00.1 Host bridge: Intel Corporation Core Processor QuickPath Architecture System Address Decoder (rev 05)
ff:02.0 Host bridge: Intel Corporation Core Processor QPI Link 0 (rev 05)
ff:02.1 Host bridge: Intel Corporation Core Processor QPI Physical 0 (rev 05)
ff:02.2 Host bridge: Intel Corporation Core Processor Reserved (rev 05)
ff:02.3 Host bridge: Intel Corporation Core Processor Reserved (rev 05)


Any ideas would be appreciated!
Thanks!

[Edit]
Couldn't get it to working with genkernel no matter what I did, installed kernel using menuconfig with the SCSI driver "mpt2sas" and it works just fine.
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VinzC
Watchman
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Joined: 17 Apr 2004
Posts: 5004
Location: Dark side of the mood

PostPosted: Sat Nov 22, 2014 11:36 am    Post subject: Reply with quote

Hi.

As a suggestion, I think it would be great if you moved the EDIT for the fix you found around the top of your first post, e.g. "Dell R210 requires kernel driver mpt2sas".

Cheers.
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