I have a problem with a few up-to-date installations of CentOS 5.5. I have lost all md (software raid) devices on them some point in the past. They were working ok.
Now the 2 disks are seen as two separate disks, with no link between them.
# cat /proc/mdstat
Personalities :
unused devices: <none>
I just restarted my server (Ubuntu 9.04 server, running on ESXi 4.0) and while copying files onto the server using samba I got strange problems and the connection was lost. When I rebooted the total system, so ESXi as well as Ubuntu Server I did find problems on my RAID disk.
The directory, where the new files were added I have a lot of files, but a lot of them do not have any info except their name:
1304 -rw-rw-rw- 1 spoorhobby spoorhobby 1327274 2010-05-15 22:10 DSCF1895.JPG
? -????????? ? ? ? ? ? DSCF1896.JPG
? -????????? ? ? ? ? ? DSCF1897.JPG
? -????????? ? ? ? ? ? DSCF1898.JPG
[Code].....
Both mirror disks are still functioning and I can still add/delete files, from the server, from other LINUX systems and from other Windows systems via samba.
I did make a full backup on a different server.
Google brought me no love on this one, tried searching here with little luck as well. So I'm hoping somebody vastly more experienced than I can shed some light on my plight.
The situation:
I have a CentOS 5.3 x64 server running the latest cPanel which works fantastic. I issued a graceful reboot and the server came back up (according to the DC) just fine to a login prompt. Apparently the system lost all of its IP address configuration. Primary IP, secondary IP's gateway, you name it and it was gone. Now my secondary IP's were showing in cPanel after I had the DC re-enter my main IP address/gateway. But listed as not active due to the fact that they were not anywhere to be attached to the interface. i.e. eth0:1 eth0:2 etc and so on.
I have no idea where to begin looking for this problem and am afraid to reboot it again (at least until I get my lantronix spider up there). I've never experienced this with any of my other CentOS/cPanel servers either. All similar configurations CentOS 5.3 x64, latest cPanel as well. My hardware is all Supermicro gear as well and has been solid in the past.
Maybe I'm just missing something, granted I've only been managing Linux based servers for about two years now. This is actually the first real problem I've ran into on any Linux distro, they are normally pretty solid. So I assume it's a configuration error on my part somewhere.
I've got 2 hard disk drives of 250GB, with this partitions :
All partitions are with format "linux raid software". I made 3 raid1 with them like that :
I want to clone them to news hdd of 500Gb, to have this partitions :
My problem, how can I resize partitions, before resize the array md2 with the command mdadm --grow /dev/md1 --size=max ?
After, how can I rebuild /dev/md2 without lost any datas ?
I'm using ubuntu-server 10.04 64bits.
Could 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.
Consider the following setup: Ubuntu system installed on a separate SSD for speed. An ubuntu software RAID array consisting of X number of physical HDD's for storage (RAID6 or RAID10). RAID setup is done during system install. If I suffer a total crash of the SSD and loose my system, will I be able to, using a new system disk, "reconnect" to the RAID array even if the "mothersystem" of the software RAID is lost? If yes, are there any particular config- or system files I need to backup to be able to rescue the array or will it just be recognized "out-of-the-box" when reinstalling ubuntu?
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Code:
SATA device C465.76 GBATA WDC WD5000AVDS-6
SATA device D465.76 GBATA WDC WD5000AAKS-0
[code]....
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Login in problems:
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If backlight control doesn't work with the 'XRANDR' option above, use this code...
Safe the file, run 'sudo update-grub' and reboot.
Credits: https://bugs.launchpad.net/ubuntu/+s...id/+bug/392948[/INDENT]http://www.linlap.com/wiki/toshiba+satellite+t130
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I inserted the contents of the RESULTS.txt here. code...
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I already tried to remove and reinstall the driver package via apt-get (sudo apt-get un/install bcmwl-kernel-source bcmwl-modaliases) but nothing helped. code...