Debian Configuration :: RAID1, Cannot Recovery After A Failure?
Aug 5, 2010
I'm a beginner + in debian (ie I know how to launch basic command under a shell), and I very new to configuration problem.I have a running perfectly file server for probably more than 2 years that I never touch. That's the debian problem, when it's unning, it's forever, no reboot at all.I recently bought 2 new sata drive 1TB5, that I add to my system by adding to my old system a SATA PCI board without any problem.But, one of these 3 month old drive is already dead.So I try to replace it and that's where problem started.....First I did a#mdadm --manage /dev/md1 --remove /dev/sdb1, of course without sucess because sdb is dead
#mdadm --detail /dev/md1
/dev/md1:
Version : 00.90.03
[code]...
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Jan 7, 2011
We have the following server at collocation: [URL]
Provider's technicians were working for 3 hrs but finally were unable to set up hardware RAID1 on it.
What could prevent them from doing it? Is it difficult to set up RAID1? It is mentionned as basic function in specifications.
They said debian not booting after raid configured...
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Jul 28, 2015
Recently tried to make RAID1 on MBR partitions scheme on Debian Jessie - debian-8.1.0-amd64-DVD-1. The issue - I have unable to boot from second drive after grub-install /dev/sdb by any ways. RAID1 itself for / swap and home is fully functional. Decided to try the same thing on GPT, same story. How to boot from second drive on most recent Debian Branches?
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Apr 8, 2011
I was experimenting in virtual machines this evening with software RAID.I found Slackware's method straightforward and intelligible. The README is excellent. I found software RAID setup in Scientific Linux (RH Enterprise clone) and Debian convoluted and confusing.My only question regarding software RAID in Slackware is how the system notifies you about the failure of one component. I pulled one of the virtual disks offline to deliberately fail the array but I wasn't notified when rebooting. I didn't look too deeply into log files to be honest. Can it be set to automatically notify the admin about a failure?
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Jul 29, 2010
I have built a small test server. I am planing on using this machine a an email and web server to test out its hosting capacities. in the future I will build a larger and more well equipped version.
AMD Athlon x2 2.0ghz
2 160gb SATA drives (hardware raid 1, done through the Motherboard)
2 gb ram (dual channel)
Like I said small test server. I am trying to install 10.04 server edition. When I get to the point of partitioning it asks me to activate the raid so I do. I get through the guided partitioning and get ready to write the file system to the drives and the screen goes red and says that it has failed. On a side note, this works if i install it on the same drives without any raid configuration.
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Feb 1, 2011
We have had a hardisk crash in our RAID1 webhosting server running CentOS5 and Plesk. We first realized something was wrong when our main site didn't load but showed MySQL errors. We then found out that the system was in read-only state. Something that also happened the day before yesterday, but we could fix with a FSCK. Then the system worked well til around 18 hours later when it crashed with the same sympoms. So, we rebooted the server and wanted to do a filesystem check again. But the HDD wouldnt even load. It was gone. Unfortunatelly it was not realized that the second disk in the system was also not working any more for some time now. Fortunatelly we had our main site backed up externally though. So we could re-install a fresh box and mounted the two drives to the system. We checked the harddisk. One is practically empty (the older one), the other has almost only files in 'lost + found' but these are all "numbered", no real filenames or so.
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Aug 12, 2010
I've got an 8-disk raid-5 setup, and one of the disks failed. I shut the system down, replaced it, and powered the box back on again. Then, I made a catastrophic mistake; I 'failed' and removed the wrong disk (should have been sdj1, and I typed sdk1 by accident). I tried to re-add sdk1 back to the raid array, but it got listed as 'spare'. My raid array is off-line, since I now have 2 disks unavailable.
I know that the data still exists on sdk1, is there any way I can get the raid array to recognise the fact that it's a valid part of the array, and not a spare disk? At least if I can do that, I'll have a degraded but accessible array, and then I can rebuild the array on the properly replaced disk.
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Oct 13, 2010
Lately I'm encountering a somewhat annoying malfunction: almost every boot, my desktop is stuck, HD red led is constatnly on, and i get a message from kerneloops that I had a kernel failure. I can move the cursor a little and slowly or not at all. Few violent reboots and I get a clean boot. Running Debian Lenny kernel 2.6.26-2-686 on a Pentium 4 2.0 GHz with 250 MiB ram.
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Aug 15, 2011
I am experimenting with installing a bare minimum, network capable installation of Debian Squeeze. Right now, I am having trouble getting proper host name resolution. I have provided the output of ping (which is able to resolve names), wget (which is unable to resolve names), and the contents of the files I believe to be relevant to the problem. When I installed Debian, I installed *only* the SSH Server from the list of available configurations. Since then, I have installed mdns4, dnsmasq, mdns-scan, and libnss-mdns to get name resolution to work with no success so far. All packages were installed with no recommends -- aptitude -R package name. What am I missing to get host name resolution working?
[Code]...
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Feb 3, 2016
I'm testing to log in using openldap authentication on jessie by following article from [URL] ..... and when I try to log in from ldap client (another debian 8 VM), it failed with
Code: Select allFeb 3 09:25:33 clt nscd: nss_ldap: could not connect to any LDAP server as cn=admin,dc=test,dc=lab - Can't contact LDAP server
Feb 3 09:25:33 clt nscd: nss_ldap: failed to bind to LDAP server ldap:///192.168.191.120: Can't contact LDAP server
Feb 3 09:25:33 clt nscd: nss_ldap: reconnecting to LDAP server...
Feb 3 09:25:33 clt nscd: nss_ldap: could not connect to any LDAP server as cn=admin,dc=test,dc=lab - Can't contact LDAP server
[Code] ....
test result from client with ldapsearch
Code: Select all# ldapsearch -h 192.168.191.120 -D cn=admin,dc=test,dc=lab -W -x -b 'dc=test,dc=lab' 'userName=*'
Enter LDAP Password:
# extended LDIF
#
# LDAPv3
# base <dc=test,dc=lab> with scope subtree
# filter: userName=*
[Code] .....
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Sep 17, 2015
I'm new to Debian and installed it with Cinnamon because I want to learn some OpenCL programming in Linux. I have a Nvidia GT 525M GPU. Once the operating system is installed, I followed [URL] ..... article to install the proprietary Nvidia drivers. As the forum suggested, instead of creating an Xorg server configuration file, I installed Bumblebee according to [URL]..... article.
But when I restarted my machine after completing all the steps when I try to log in I get the follwoing message:
"failed to load session 'cinnamon'"
I cannot login as normal user or root.
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May 10, 2011
I've just installed 'Testing' on a VMware server and after I completed the install with no problems, the system booted into the kernel and I noticed the following start up process error:
startpar: service(s) returned failure: udev...failure!
I have not seen this before and am not sure if it's related to the fact that this is a virtual machine and not a physical server or something else.
Here is a Screenshot.
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Jul 29, 2011
I am trying to login as root but i end up with an error that says: su: Authentication failure
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Aug 11, 2011
i have this problem i install android sdk, and i install libreries: libstdc++5, lib32stdc++6, lib32ncurses5 and libstdl1.2-dev,
now if i use ldd comand don't have problem, but when i use eclipse and i compile a simple example (hello word example), i have this
error: [Emulator] SDL init failure, reason is: No available video device i have a notebook toshiba satellite A300-1RI whit ATI Radeon 3650, i install the amd driver and all work well.
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Jun 18, 2010
I have a fileserver which is running Ubuntu Server 6.10. I had a RAID5 array consisting of the following disks:
Code:
/dev/sda1
/dev/sdb1
/dev/sdd1
/dev/md0 -
the raid drive for the above three disks. The sda1 disk has failed and the array is running on 2 of 3 disks
/dev/sdc (OS disk)
/dev/sde (new 2tb disk - unused)
/dev/sdf (new 2tb disk - unused)
My plan was to rebuild the array using the two new disks as RAID1. Would the best way to do this be to create a new RAID1 disk on /dev/md1 then copy all data over from /dev/md0? Also - this may sound stupid but since all 3 drives in md0 are identical i'm not sure physically which disk is bad. I tried disconnecting each disk one-by-one then rebooting but the system doesn't appear to want to boot without the bad drive connected. I've already failed the disk in the array with mdadm but i'm unsure of how to remove it properly.
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Apr 1, 2010
I'm building a NAS with xubuntu and I've put 2x1,5TB disks in RAID1 with mdadm. My question is really straightforward: do you have any advice for some special tuning/configuration for the RAID setup? Somewhere I read that I should disable disk caching, but I would like to have some more opinions.
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Jun 25, 2010
I have been running Fedora 12 since its release without issue with a hardware RAID1 of two 1.5TB drives and a root volume of 500GB on a separate drive. Last night, after rebooting my machine, I was greeted with the following:Checking filesystemsfsck.ext4: Unable to resolve 'UUID=<snip>78' [FAILED]and the option of shell access as root. After logging in, I ran blkid with these results:
/dev/sda: TYPE="jmicron_raid_member"
/dev/sdb: TYPE="jmicron_raid_member"
/dev/sdc1: UUID="<snip>86" TYPE="ext4"
[code]...
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May 26, 2010
Hardware at issue is an nVidia GeForce 9600 GT. Issue occurs regardless whether the driver is downloaded and installed from nVidia, or installed via Synaptic courtesy of the new dkms package in the repositories.
It should also be noted that the issue only arose after an update today, as follows:
I do not believe it is related to the last three items in that list. Because everything worked perfectly before todays update, it would appear that one of those other updates is causing KDM and nVidia to not want to co-operate with each other.I also notice that, new to the boot sequence, the system is booting with "concurrency" - never seen that scroll by before - which may have something to do with it too.
OK, what happens. KDM "fails" to start when booting the computer. Symptoms : At the appropriate spot in the boot sequence, the screen goes black (as usual), but then, instead of the cycling cursor followed by the logon screen, the nVidia logo appears, and after about 7 or 8 seconds, the screen goes black for about a second, then drops me back at the console. From there, I can log in as root.
Now, the thing is, KDM is actually running, but using <control> <alt> <F7> only brings me to a blank black screen. By issuing the command /etc/init.d/kdm restart, I come up to a normal logon and can proceed as usual. As well, if I delete xorg.conf, system boots OK.
Looking at the system log, we find :
And then some way past that we get :
Should mention that was using the latest stable driver from nVidia (195.36.24), but in the hope that maybe something in the latest beta may solve the issue, installed that, but the answer is nope And yes, completely uninstalled the nVidia drivers between each test of the nVidia driver, the same driver in the repositories and the latest beta driver, before anyone mentions.
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Jan 16, 2011
I saw a post where you were faceing "Type s for swith or M or mannual restore"
I got the same message. I tried S but nthing happend then I tried M. it took me to root@ubuntu:/#
How i restore it manunally or if not possible I need to back up the data to pend drive
but i cant find the pendrive in the home section.
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Mar 21, 2010
I just have a few questions about LVM and RAIDs. It seems they are basically the same thing. Is this correct? I can add two drives together on both of them and it appears as a larger drive, along with other setups like raid1 and raid5, etc.. And is there a difference in performance between them?
And my second question.. I know one is stripped and one is not, but is the performance between a raid1 and a raid0 the same? I've been told that raid1 is faster than raid0 because the data is written twice.. and therefore can be read from two different disks which equals faster read speed, but slower write speed since it writes to the two.
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Feb 8, 2009
i have 2 shiny new 1TB SATA drives. I have a running system already, basic install on a single disk. install both new drives & raid1 them on a single partition - mount them for storage. Seems simple but all i can find are howto's on instaling the whole system & booting on RAID.
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Apr 21, 2010
I installed a raid1 on a debian lenny box with only 1 drive "--raid-devices=1" because I didn't have the other drive yet. When I got the other drive, I used "mdadm --grow /dev/md0 --raid-devices=2" and "mdadm --manage /dev/md0 --add /dev/sdb1" The original drive is sda1. I watched /proc/mdstat until it was completely synced, and after a reboot, the system will not reassamble the raid. It fails with "mdadm: no devices found for /dev/md0" This is where root is, therefore, I get nowhere. From a rescue cd I can disable the other drive and shrink back down to 1 device and it boots fine.
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Mar 30, 2010
i have downloaded the pidgin.repo file from the web and copied in /etc/yum.repos.d. and i simply start the yum-updatesd service. When i fire the command yum install pidgin, it gives some name resolution problem. i am accessing net through proxy server.RHEL 5 is my distro. This is what the error msg i am getting.
[Code]....
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Jul 26, 2014
I have a VIA Epia M 5000 system with 2 western digital 1TB NAS SATA drives connected through SATA<->IDE adapter. Everything installs and writes as expected except... grub. It never boots, after a message 'Grub loading' I always get 'error: no such disk'. I've tried numerous times and has been attemping to fix the issue for the past 2 days.
/dev/sda
0.999TB 0xfd linux raid autodetect partition
1GB 0xfd linux raid autodetect, logical partition
/dev/sdb exactly the same
0.999TB 0xfd linux raid autodetect partition
1GB 0xfd linux raid autodetect
/dev/md0
RAID1 of /dev/sda1 and /dev/sdb1
marked as ext4, boot point /
/dev/md1
RAID1 of /dev/sda5 and /dev/sdb5
marked as swap
update-grub2 in rescue mode generates grub.cfg with SET root=/mduuid/UUID_OF_SDA1
then after that there's search --no-floppy etc --set root=/mduuid/UUID_OF_MD0
I'm writing this from memory but simply the two uuids are different. Is this correct? I get those UUIDs to compare from blkid. All partitions are marked as bootable. grub-install /dev/sda and grub-install /dev/sdb produces no errors. grub-install /dev/md0 does not work, complains about superblocks or something similar.
Grub.cfg file contains insmod raid mdraid1x and similar lines, so that should be ok. Grub drops to rescue mode with message error: no such disk. Not device, but disk. Google finds many results for 'no such device' error, but I am not getting that error. 'ls' produces
(hd0) (hd0,msdos1) (hd1) (hd1,msdos1) ls ANY_VALID_PATH produces empty newline being printed, nothing more.
setting prefixes manually does not work, with error message 'error: file not found'. ls (hd0,msdos1)/boot/grub also produces empty line being printed. Rescue CD and auto-assemble of md0 and md1 works, the files are there, everything okay, except grub.
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Jun 29, 2010
I'm trying to configure postfix on an ubuntu virtual machine to use gmail as a relay client. For the past two days I have been in and out of the logs, changing parameters and blindly following tutorials but I can't get anything to work properly. So far I've narrowed my problems down to tls connection establishing and a failure to authenticate, judging by the local emails I've received from "The mail system".
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Aug 18, 2010
I've got a, as it seems to me, strange problem.I've inadvertently deleted my user from the group admin so I'm in the same situation of a lot of other users (read a lot of messages about it).My problem is that when restarted in recovery mode there is no way I can choose the 'drop to the root shell' or similar in the menu.The menu appears for a second and then I've got an empty screen. If I press a key I've been requested for a username and password that of course is not what I need.
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May 12, 2010
I've forgotten the password of one my rar file. Knows someone a rar password recovery tool for debian?
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Nov 16, 2010
After a large update of software I can nolonger open Squeeze. I get past the grub screen however before the gdm starts up the screen goes blank and stays that way. I have only one kernel showing on the grub screen.
I tried in Recovery Mode: Ctrl+Alt +F keys with effect and startx returns a blank screen, this is why I though to try loading another kernel to see if that helps. I'm using a Acer Laptop.
My question is: Is it possible while in Recovery Mode to load/install another kernel os that when I get back to the grub screen I have another kernel to try to boot into?
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Jul 27, 2011
I have just upgraded my lenny box to squeeze. I did it by clean-installing squeeze. The installation was successful, but I just noticed that I had forgotten to backup some important files I had on this machine before the installation...
Now, is there any way to recover those files?
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Jan 27, 2011
I have inherited a Compaq Armada 1592DMT that has Debian GNU/Linux (tiny) on its hard drive. After bootup there is a dialog box asking for login & password. Two things I have no way of answering. So how do I recover them? I do not have the faintest idea how Debian Linux works, nor how to Bash Grubs, I'm just an old Windows button pusher.
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