Re: Disk Druid and RAID 10 Partitions

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I'm having a hard time getting it to install the boot loader have
tried installing it on the raid device and also on the master boot
record but both fail.

On 2 Mar 2012, at 22:41, Reindl Harald <h.reindl@xxxxxxxxxxxxx> wrote:

>
>
> Am 02.03.2012 23:20, schrieb Aero Maxx:
>> Hello Reindl,
>>
>> Thanks very much for replying to my question, what if I wanted swap to
>> be a partition tho, would I create a 4GB partition on each of the 4
>> drives or make it 2GB partition on each of the 4 drives?
>
> no idea, since i wanted the setup as easy to maintain as possible
> in the case of a drive failure i decided only to split boot, system
> and data and all other stuff i do not want on the system disk
> is on /mnt/data with bind-mounts
>
> my machines have 16 GB RAM, swap is not really a topic there
>
>> What about using LVM with raid 10?
>
> also no idea, that is why i took 2x4 TB disks
> enough free space for the next 10 years
> of the 1.6 TB used are 500 GB local backups
> and the rest contains a bundle of virtual machines
> including a backup-vm for nearly all data i maintain
>
> so no, i do not think about expand the array :-)
> /dev/md2      ext4    3,7T  1,6T  2,1T  44% /mnt/data
>
>> On 2 Mar 2012, at 21:48, Reindl Harald <h.reindl@xxxxxxxxxxxxx> wrote:
>>
>>>
>>>
>>> Am 02.03.2012 22:39, schrieb Reindl Harald:
>>>> Am 02.03.2012 22:32, schrieb Aero Maxx:
>>>>> If I am using a raid 10 setup on 4 Hard Drives, would I make a raid partition of 250MB on each of the 4 drives as
>>>>> in total this would be 500MB, or would I still make a 500MB raid partition, same for swap still make a 4992MB
>>>>> partition or halve it and spread it over the 4 drives?
>>>>
>>>> 1 x RAID 1 for /boot over all 4 drives
>>>> grub-install /dev/sda-/sdv/sdd to have all bootbale
>>>>
>>>> 1 x RAID10 for the OS
>>>> 1 x RAID10 for data
>>>>
>>>> SWAP can these days be a file
>>>> /home is here a folder on /mnt/data with a bind-mount
>>>>
>>>> this setup runs on 2 identical machines once installed and
>>>> with dd over ssh cloned since june 2011, originally F15 and
>>>> in the meantime updated to F15
>>>> _______________________
>>>>
>>>> /dev/md0      ext4    497M   66M  427M  14% /boot
>>>> /dev/md1      ext4     30G  7,3G   22G  25% /
>>>> /dev/md2      ext4    3,7T  1,6T  2,1T  44% /mnt/data
>>>>
>>>> [root@srv-rhsoft:~]$ cat /proc/mdstat
>>>> Personalities : [raid1] [raid10]
>>>> md2 : active raid10 sdc3[0] sdd3[3] sda3[4] sdb3[5]
>>>>     3875222528 blocks super 1.1 512K chunks 2 near-copies [4/4] [UUUU]
>>>>     bitmap: 1/29 pages [4KB], 65536KB chunk
>>>>
>>>> md1 : active raid10 sdc2[0] sdd2[3] sda2[4] sdb2[5]
>>>>     30716928 blocks super 1.1 512K chunks 2 near-copies [4/4] [UUUU]
>>>>     bitmap: 1/1 pages [4KB], 65536KB chunk
>>>>
>>>> md0 : active raid1 sdc1[0] sdd1[3] sda1[4] sdb1[5]
>>>>     511988 blocks super 1.0 [4/4] [UUUU]
>>>
>>> forgot the fdisk output
>>>
>>> /dev/sda1   *        2048     1026047      512000   fd  Linux raid autodetect
>>> /dev/sda2         1026048    31746047    15360000   fd  Linux raid autodetect
>>> /dev/sda3        31746048  3906971647  1937612800   fd  Linux raid autodetect
>>>
>>> /dev/sdb1   *        2048     1026047      512000   fd  Linux raid autodetect
>>> /dev/sdb2         1026048    31746047    15360000   fd  Linux raid autodetect
>>> /dev/sdb3        31746048  3906971647  1937612800   fd  Linux raid autodetect
>>>
>>> /dev/sdc1   *        2048     1026047      512000   fd  Linux raid autodetect
>>> /dev/sdc2         1026048    31746047    15360000   fd  Linux raid autodetect
>>> /dev/sdc3        31746048  3906971647  1937612800   fd  Linux raid autodetect
>>>
>>> /dev/sdd1   *        2048     1026047      512000   fd  Linux raid autodetect
>>> /dev/sdd2         1026048    31746047    15360000   fd  Linux raid autodetect
>>> /dev/sdd3        31746048  3906971647  1937612800   fd  Linux raid autodetect
>>>
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>
> --
>
> Mit besten Grüßen, Reindl Harald
> the lounge interactive design GmbH
> A-1060 Vienna, Hofmühlgasse 17
> CTO / software-development / cms-solutions
> p: +43 (1) 595 3999 33, m: +43 (676) 40 221 40
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>
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