I don't know RAID configurations but, the above statement would be true. Grub has to be installed on sda not sda1, etc.Originally Posted by mintfrish
Ubuntu addict and loving it
I don't know RAID configurations but, the above statement would be true. Grub has to be installed on sda not sda1, etc.
First Cup of Ubuntu
Okay I tried it by using /dev/sda. But still I get an error message during installation.
What do I do wrong with the boot partition? Can I create it manually after installation procedure?Code:Executing 'grub-install /dev/sda' failed. This is a fatal error.
Last edited by mintfrish; September 25th, 2012 at 07:27 PM.
First Cup of Ubuntu
Hmm after checking fdisk -l again
I tried this:Code:sudo fdisk -l Disk /dev/sda: 16.0 GB, 16001269760 bytes 255 heads, 63 sectors/track, 1945 cylinders, total 31252480 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00017dbe Device Boot Start End Blocks Id System /dev/sda1 * 2048 309247 153600 83 Linux /dev/sda2 309248 22247423 10969088 83 Linux /dev/sda3 22247424 31252479 4502528 5 Extended /dev/sda5 22249472 31150079 4450304 82 Linux swap / Solaris Disk /dev/sdb: 16.0 GB, 16001269760 bytes 255 heads, 63 sectors/track, 1945 cylinders, total 31252480 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x000d958a Device Boot Start End Blocks Id System /dev/sdb1 2048 21940223 10969088 83 Linux /dev/sdb2 21940224 31252479 4656128 5 Extended /dev/sdb5 21942272 30842879 4450304 82 Linux swap / Solaris Disk /dev/sdc: 31.6 GB, 31641829376 bytes 255 heads, 63 sectors/track, 3846 cylinders, total 61800448 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0xc3072e18 Device Boot Start End Blocks Id System /dev/sdc1 * 2048 61800447 30899200 c W95 FAT32 (LBA) Disk /dev/md0: 22.5 GB, 22464675840 bytes 255 heads, 63 sectors/track, 2731 cylinders, total 43876320 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 4096 bytes / 8192 bytes Disk identifier: 0x00014576 Device Boot Start End Blocks Id System /dev/md0p1 64 43875055 21937496 83 Linux
Code:sudo mkdir /home/tempoCode:sudo mount /dev/md0p1 /home/tempogave meCode:sudo grub-install --root-directory=/home/ubuntu/tempo /dev/sda1
Code:grub-probe: error: cannot find a device for /boot (is /dev mounted?). /usr/sbin/grub-probe: error: cannot find a device for /home/ubuntu/tempo/boot/grub (is /dev mounted?).
Ubuntu addict and loving it
Sorry, this is out of my league. Hopefully Old Fred or someone with grub knowledge will come along and help.
5 Cups of Ubuntu
Re: HOWTO: Linux Software Raid using mdadm
All I can say is YESSSSSSSSSSS!!!!!!!
I have a home storage server, self-made. AsRock Intel mobo, dual-core CPU, and 4 western digital 1TB drives in a RAID 5 config. It uses Ubuntu server 11.04 (or did...). It was awesome. Great little box. Then we had a good power surge during a storm, and the board died. Replaced the board, couldn't get another one for the LGA775 chip with 5-6 SATA inputs, so I had to start with a new base HD.
Anyways, I followed the instructions on the first page, got a live CD environment going, and simply said 'sudo mdadm --A'. Ubuntu just figured out the 4 drives were a raid array, assembled them, I mounted them and BANG!
I'm really happy right now. I do love Linux.
-Aaron
"The green duck is just a red herring".
First Cup of Ubuntu
Okay thank you very much mate. Event though I couldn't install the desired distro I was able to install ubuntu alternate. But still I run into problems here concerning the double swap space.
When I enter
I getCode:swapon -s
My fstab looks like thisCode:Filename Type Size Used Priority /dev/mapper/cryptswap2 partition 4450300 0 -1
and fdisk is the followingCode:# /etc/fstab: static file system information. # # Use 'blkid' to print the universally unique identifier for a # device; this may be used with UUID= as a more robust way to name devices # that works even if disks are added and removed. See fstab(5). # # <file system> <mount point> <type> <options> <dump> <pass> proc /proc proc nodev,noexec,nosuid 0 0 # / was on /dev/md0 during installation UUID=86f44b73-1822-4f25-8482-03ce6e84184a / ext4 errors=remount-ro 0 1 # /boot was on /dev/sda1 during installation UUID=8a4ca2d8-dc7b-44e5-9448-e675d83120d6 /boot ext4 defaults 0 2 # swap was on /dev/sda5 during installation #UUID=76cb7d4a-9fd7-4746-b690-b8a9a2663122 pri=1 swap sw 0 0 # swap was on /dev/sdb5 during installation #UUID=f0b88015-6906-4ec3-a178-1aa19a4cd7f5 pri=1 swap sw 0 0 /dev/mapper/cryptswap1 none swap sw 0 0 /dev/mapper/cryptswap2 none swap sw 0 0
So actually my swap partitions are /dev/sdb5 and /dev/sdc5. How would I set this up right so I can use both partitions ?Code:Disk /dev/sda: 120.0 GB, 120034123776 bytes 255 Köpfe, 63 Sektoren/Spur, 14593 Zylinder, zusammen 234441648 Sektoren Einheiten = Sektoren von 1 × 512 = 512 Bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Festplattenidentifikation: 0xc1a472a2 Gerät boot. Anfang Ende Blöcke Id System /dev/sda1 * 2048 234440703 117219328 5 Erweiterte /dev/sda5 4096 234440703 117218304 83 Linux Disk /dev/sdb: 16.0 GB, 16001269760 bytes 255 Köpfe, 63 Sektoren/Spur, 1945 Zylinder, zusammen 31252480 Sektoren Einheiten = Sektoren von 1 × 512 = 512 Bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Festplattenidentifikation: 0x00017dbe Gerät boot. Anfang Ende Blöcke Id System /dev/sdb1 * 2048 309247 153600 83 Linux /dev/sdb3 311294 31150079 15419393 5 Erweiterte /dev/sdb5 22249472 31150079 4450304 82 Linux Swap / Solaris /dev/sdb6 311296 22249471 10969088 fd Linux raid autodetect Partitionstabelleneinträge sind nicht in Platten-Reihenfolge Disk /dev/sdc: 16.0 GB, 16001269760 bytes 255 Köpfe, 63 Sektoren/Spur, 1945 Zylinder, zusammen 31252480 Sektoren Einheiten = Sektoren von 1 × 512 = 512 Bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Festplattenidentifikation: 0x000d958a Gerät boot. Anfang Ende Blöcke Id System /dev/sdc1 2048 21940223 10969088 fd Linux raid autodetect /dev/sdc2 21942270 30842879 4450305 5 Erweiterte /dev/sdc5 21942272 30842879 4450304 82 Linux Swap / Solaris Disk /dev/md0: 22.5 GB, 22463643648 bytes 2 Köpfe, 4 Sektoren/Spur, 5484288 Zylinder, zusammen 43874304 Sektoren Einheiten = Sektoren von 1 × 512 = 512 Bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 524288 bytes / 1048576 bytes Festplattenidentifikation: 0x00000000 Festplatte /dev/md0 enthält keine gültige Partitionstabelle Platte /dev/mapper/cryptswap2: 4557 MByte, 4557111296 Byte 255 Köpfe, 63 Sektoren/Spur, 554 Zylinder, zusammen 8900608 Sektoren Einheiten = Sektoren von 1 × 512 = 512 Bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Festplattenidentifikation: 0x084f234d Festplatte /dev/mapper/cryptswap2 enthält keine gültige Partitionstabelle
Ubuntu addict and loving it
Note the partitions and UUIDs from sudo blkid.
Edit fstab:
gksu gedit /etc/fstab and correct the UUIDs and/or delete the incorrect entries.
You should have just one ext4 and one swap.
It is listing several which is probably the problem.
Correct the fstab entries, save it and reboot.
Any time you re-install a system or change a swap file, it "remembers" the old UUID and fstab must be edited.
Here is what my fstab looks like on Quantal:
Code:# /etc/fstab: static file system information. # # Use 'blkid' to print the universally unique identifier for a # device; this may be used with UUID= as a more robust way to name devices # that works even if disks are added and removed. See fstab(5). # # <file system> <mount point> <type> <options> <dump> <pass> # / was on /dev/sda8 during installation UUID=08562c83-a132-4997-b215-a3a1d2e076bb / ext4 errors=remount-ro 0 1 # swap was on /dev/sda7 during installation UUID=0416f9e3-4d20-4a9e-989f-b361bf7bbfc2 none swap sw 0 0
First Cup of Ubuntu
Thanks mate. I followed your instructions and commented everything off that was unnecessary. But why only one swap partition? Isn't it the intention of the op to create 2 swap partitions ?
Anyways, first I had to get rid of the cryptswap. After doing that I created the 2 swap partitions with mkswap /dev/sdb5 and /dev/sdc5. With that done I got the UUID's and I could paste them into fstab. I set them both with pri=1.
Theese are the two new swap partitions in fstab
and swapon -s is giving meCode:#swap manuell hinzugefügt UUID=eb377be2-1b3f-414c-bed3-92c28bfafeff pri=1 swap sw 0 0 #swap manuell hinzugefügt UUID=1aed75da-7159-43b4-9b1a-d3538c97b04b pri=1 swap sw 0 0
Is it normal that we still see priority -1 and priority -2 here ?Code:Filename Type Size Used Priority /dev/sdb5 partition 4450300 0 -1 /dev/sdc5 partition 4450300 0 -2
Ubuntu addict and loving it
That looks right according to page 1. As I said you are out of my league. I only subscribed to this thread so if I ever did have a RAID
configuration, this would help.
I will now butt out and "observe".
First Cup of Ubuntu
Me again.
Wow, after using the mdadm ubuntu until yesterday I get this while booting
What is that ? Can I do something or is my whole, with a lot of effort built system, gone ?Code:Kernel Panic - not syncing: Attempted to kill init! Pid: 1, comm: init Not tainted 3.2.0-32-gerneric #51-Ubuntu Call Trace:...
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