I have a server setup with software raid, I've used mdadm to create the mirror and it seems to be working just fine but it won't start by itself.
2 x 160GB SATA drives, each with a single partition
/dev/sdb1 and /dev/sdc1 respectively
Code:
/dev/md0:
Version : 0.90
Creation Time : Fri Dec 17 13:31:13 2010
Raid Level : raid1
[Code].....
what to do for lock automatically slackware 13 if not used for n minutes ?What can i do to start automatically the ktorrent (a bittorrent program for linux) on system starts on slackware 13 ?
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[code]...
but still no dice.
I use Opensuse 11 with fvwm. How can I get conky start automatically when I start fvwm?
I setup the conky under fvwm session for my Opensuse 11 but it won't start automatically. I am wondering how to write some kind of scripts to force it to start automatically and with a delay about 10 seconds after fvwm starts.
When I installed this system (Xubuntu 9.04 x64) several months ago, I had two identical SATA hard drives, but I didn't do a RAID1 mirror then because I didn't want to wipe out my old OS (FreeBSD) on the second drive in case I needed to retrieve something from it. So I installed Xubuntu on the first drive (sda) and for all that time, the second drive (sdb) has been running but unused, and fdisk showed that the FreeBSD partition was still there.
A couple weeks ago, my separate backup server failed, so as a short-term backup I did a 'dd if=/dev/sda of=/dev/sdb' to make an exact copy of my Xubuntu install on drive A upon drive B (the former FreeBSD drive), then mounted /dev/sdb1 on /mnt to make sure it worked successfully. So far so good, but I still didn't set up any RAID stuff.
Several days later, I needed to reboot because of a security upgrade, and when I logged out, the GUI froze up. Thinking not too much of it, I restarted the system, and it came up fine. But the next day, I discovered that I was missing several days worth of email and recent files. In fact, everything had been reverted back to a state from several days earlier --- I think from the day I copied the first drive to the second one. Files I created in the interim were gone, and files I deleted in the interim were back. It was as if the first drive was 'restored' from the second one without my knowledge.
Doing some testing now, I find that if I create a new file on /dev/sda1 and then mount /dev/sdb1, the file also exists on sdb1. It's as if they're acting as a RAID1 mirror, without my telling it to do so. Could it just decide to do RAID1 because it sees there are two identically partitioned drives? That seems dangerous. And if they were really in a RAID mirror, why would it let me mount them separately? It's very strange.
I don't mind if it's suddenly decided to do RAID, but I want to make sure it's not going to 'restore' a more current filesystem from an older one again, if that's indeed what happened.
I am going to setup a new Ubuntu 10.04 using RAID 1 soon. Installation will be via the alternate CD. Older distributions required manually installing Grub to the second drive, to boot if the first drive fails. I found different statements about how this is handled since 9.10.e.g.
Quote:
Install GRUB boot-loader on second drive (this step is not need if you use Ubuntu 9.10)
or
Quote:
installing GRUB to second hard drive depending on your distribution
> grub-install /dev/md0
or
> grub-install /dev/sda
> grub-install /dev/sdb
is Grub2 automatically installed in all RAID drives using alternate CD 10.04 like executing sort of "grub-nstall /dev/md0" during the installation ?
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View 3 Replies View RelatedCould any RAID gurus kindly assist me on the following RAID-5 issue?I have an mdadm-created RAID5 array consisting of 4 discs. One of the discs was dropping out, so I decided to replace it. Somehow, this went terribly wrong and I succeeded in marking two of the drives as faulty, and the re-adding them as spare.
Now the array is (logically) no longer able to start:
mdadm: Not enough devices to start the array.Degraded and can't create RAID ,auto stop RAID [md1]
I was able to examine the disks though:
Code:
root@127.0.0.1:/etc# mdadm --examine /dev/sdb2
/dev/sdb2:
Magic : a92b4efc
Version : 00.90.00
code....
Code:
mdadm --create --assume-clean --level=5 --raid-devices=4 /dev/sda2 /dev/sdb2 /dev/sdc2 /dev/sdd2
As I don't want to ruin the maybe small chance I have left to rescue my data, I would like to hear the input of this wise community.
I've created a soft raid w/ 2x 1TB drives by using Disk Utility. (used for mythtv storage, not system, swap or anything else)
If I start the raid array in the Disk Utility mount and everything works as it should, but on reboot the raid array isn't started so I have to go into Disk Utility, start it, then run the mount.
How can I get it to start automatically?
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HP Pavilion Dv7
opensuse 11.4 64bit AMD
RTL8101E/RTL8102E PCI Express Fast Ethernet controller (rev 02)
KDE desktop
[code]....
I'm using vnc to connect to my ubuntu box from my windows box however I don't like the way it works.1) It doesn't start automatically. I have to be logged into my username before I can connect to my box.2) It takes control of the screen on my ubuntu box which isn't what I really want to happen. I'm used to connecting via rdp in windows where I connect to the other computer and if you looked at the other screen you wouldn't even know I am logged on.This is handy if someone else is using the pc plus I just don't like everything that I am doing to appear on a computer screen that I can't see. I find it kind of freaky.
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I am trying to use wireshark on my ubuntu 10.10 laptop. However I have found out that wireshark will only detect my network cards when it is started with root permissions. How would I make it automatically start with root permissions?
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