We have a Dell Poweredge 1750 server with 2 harddrives in RAID 1 running Debian Etch. Yesterday one of the hardrives stopped working but no error message appeared in syslog. The only indication was the amber LED diode. Is there a software way how to check that both disks are OK?
In Zentyal, it showed me active drives, if the array was degraded, and if there was any syncing happening when the array was building. How can I check that without Zentyal? Is there a terminal command or an application I can install to tell me the same information?
This runs perfectly, but my problem is that if a command fails, the other commands keeps on running. I need to keep a check that when a command fails the script is exited. In unix we have an option of echo $? to check the status of previous command, But how to accomplish this SQL.
dd is wiping part of the hard drive( 270GB partition ) with /dev/urandom for quite some hours, is there anyway to check the proccess? like speed of the process etc., I read someone doing that with another drive while having access to other terminal because of the system, but since this is directly from the install dvd, I've no clue if there's anyway to do that or not. I'm asking that mainly because:
1) I prefer run things with some kind of verbose mode
2) I accentaly opened the dvd driver (yes I know, but I forgot the install dvd was inside of it), but I closed it right after it, no errors, but it may have stopped working and has just the _ clicking?
I'm using Debian squeeze and for an assignement, i have create 2 virtual pdf cups printers. Both are working very well. To test the different administion command; i try to disable one of the printer and move his queue file to the second one. I'm able to do it easily.
Now, i wish to write a bash script that wil test the status of the printer. So that,if the printer is disable, it just execute the "move" script. Is there a way to know the status of a cups printer and use that information in a script?
For example, a command/function that can return "O" is the cups printer is enable and "1" if not.
I would need to monitor the status of an electric relay. To do so I was thinking the serial port and perl (as I don't know C ) how to check if a switch connected to a serial port is open or closed. Here is my plan, I'll plug a electric relay on the electric network and monitor the state of the switch. if the switch is closed, that mean that we are on the electric network if the switch is open that mean that we are on our diesel power generator.
PS: There will be no voltage input involve (although I can if that's required)
I'm planning to use this with Nagios to know if we are on the electric network or on our diesel power generator.
I'm pretty new to FakeRAID vs JBOD in a software RAID, and could use some help/advice. I recently installed 11.4 on a brand new server system that I pieced together, using Intel RAID ICH10r on an ASUS P8P67 Evo board with 2500K Sandy Bridge CPU. I have two RAIDs setup, one RAID-1 mirror for the system drive and /home, and the other consists of four drives in RAID-5 for a /data mount.
Installing 11.4 seemed a bit problematic. I ran into this problem: [URL]... I magically got around it by installing from the live KDE version with all updates downloaded before the install. When prompted, I specified I would like to use mdadm (it asked me), however it proceeded to setup a dmraid. I suspect this is because I have fake raid enabled via the bios. Am I correct in this? Or should I still be able to use mdadm with bios raid setup?
Anyways, to make a long story short, I now have the server mostly running with dmraid installed vice mdadm. I have read many stories online that seem to indicate that dmraid is unreliable versus mdadm, especially when used with newer SATA drives like I happen to be using. Is it worth re-installing the OS with the drives in JBOD and then having mdadm configure a linux software raid? Are their massive implications one way or another on if I do or do not install mdadm or keep dmraid?
Finally, what could I use to monitor the health and status of a dmraid? mdadm seems to have it's own monitoring associated with it when I was glazing over the man pages.
yesterday i tried to install bt4 from alongside ubuntu 10.04. Unfortunately the DVD had some errors and the installation stopped. Everything was fine till then, even the GRUB was working(i guess!) but when i tried to log into my Ubuntu it gave me an error... " /usr/lib/libgconf2-4/gconf-sanity-check-2 exited with error status 256" also there was a popup like "gnome power management was not properly installed ....blah blah blah Contact you network admin"
i have only one user on that system. i tried the single user mode but no success... i then tried to Ctrl+Alt+F1-F6 no success... can't switch to command line(this is my display problem i guess)
i have now decided to install a fresh install but i do need to take the backup. What all should i copy to the new install so that i get the same feel as before?
I ran update through the terminal and rebooted i get this error message on start up and again after I log in Please Help!! I'm running Ubuntu 11.04 using unity 2d and the latest version of Gnome 2 on a Dell Inspiron 5150 laptop There is a problem with the configuration server. (/usr/lib/libgconf2-4/gconf-sanity-check-2 exited with status 32512)
I tried changing the source to a few different ones and I picked "Select Best Server". Still getting the same msg. I am on a wired connection and there is nothing wrong with my connection.Anyone know the solution if not how do I install nvida drivers?
I have three raid volumes, md0, md1, and md2. The weekly raid-check cron always causes md0 and md2 to get checked but never md1.
Volumes md0 and md1 are on the same 8 disks. Volume md0 is a small raid1 across all 8 disks for boot and md1 is a raid5 that occupies the rest of those 8 disks. Volume md2 is a raid5 on a separate set of 6 drives. When I check /var/log/messages* I see that every Sunday md0 and md2 get checked but md1 is never checked. However, when I run 99-raid-check manually, all three volumes get checked. There is clearly something different between how crond runs that script and how I run it, but I can't imagine what that would be.
I have a mdadm RAID5 configuration on my Ubuntu Server (64-bit). In the first week after I configured the RAID, mdadm itself initiated a consistency check automatically. But after that, it won't check the RAID anymore. (the server isn't on 24/7, normally a few hours a day)I've read a post for manually initiating consistency check with these commands
Code: sudo su - echo check >> /sys/block/md0/sync_action
I'm renting a dedicated server with a company that claims that the server has 2 hard drives in a software RAID 1 array, but I need to make sure that the server really has the 2 HDD, and the size of the 2nd drive... how to do that ?? system is Centos 5.3
i have edge server. raid(5) have been installed but not able to check raid health. using command line able to.but using monitoring tool opsview, showing error -NRPE: Unable to read outpumachine Arch- 64 bit centos -5.2 package installed -MegaCli-2.00.15-1.i386.rpm
After downloading and installing iscan and run it i see this message:
Could not send command to scanner. Check scanner's status.
After command sane-find-scanner:
And this message is result of scanimage command:
No scanners were identified. If you were expecting something different, check that the scanner is plugged in, turned on and detected by the sane-find-scanner tool (if appropriate). Please read the documentation which came with this software (README, FAQ, manpages).
I have recently installed Ubuntu 10.04.1 lts server on my Intel "fakeraid" (software raid) (2x250 sata).To test my RAID 1 I turned off one HD and start the system.The first screen (Intel software screen) show Status = Degraded, but the system starts normally with just one HD.Then I turned off the system and turned on the HD again, so the first screen (Intel software screen) shows Status = Rebuild. If I enter in the software raid panel the folowing message is showed: "Volumes with "Rebuild" status will be rebuilt within the operating system"The system starts normally... but this message status stays permanently even I restart the system again
4 of them are working fine, the application installed on 10.1.1.10 can query 4 servers but I got 2 Linux Centos that are in a DMZ, and my networking team already opened ports and configured NAT but the SNMP Server 10.1.1.10 is not able to query them how can I check the snmpd is really running apart from service snmpd status? might be related with the DMZ configuration?
I'm a bit of a Linux newbie, but I did manage to set up the following RAID-5 system:1x 500GB system drive on ATA IDE4x 1TB SATA drives in software RAIDLinux = Fedora 13So here's what happened. I set up the system to send me an email every time the mdadm stat file changed, so it would send me emails when in periodically ran a self-test. I was away and noticed that the self-test was going incredibly slow (usually took 8 hours...was on course for taking 250 days!) A colleague decided to just reboot the system.Afterwards, the system would not boot and, while all 5 drives were connected, would stop at an endlessly scrolling error message of: Code: ata4.01: exception Emask 0x0 SErr 0x0 action 0x0
ata4.01: BMDMA stay 0x64 ata4.01: failed command: READ DMA ata4.01: (a bunch of hex numbers)
Have Karmic 9.10 ,Changed from Epson RX595 all in 1 (uses a ton of ink)Got the Lexmark Pro 805 3 in 1 because it says it supports Linux and the ink cartridge only cost $5 downloaded drivers and printer works but using Xsane Image Scanner error reports
'Lexmark_1_0_0:libsub/001/009': Device busy Using Image Scan - reports Could not send command to scanner Check the scanner status. The RX595's scanner drivers had to been manually instatlled,, in the Printer box the Lexmark shows available..
I would like to implement something when a server is offline for whatever reason. For example. I got my own DNS servers and webservers. I would like it if the users goes to www.somedomain.com and the server it is actually on is down for maint. or For whatever not able to respond. What can be done so that if the server isn't able to be contacted that it can point to either a another server or the dns somehow can display a page stating who to contact to report a problem or to let them know its down for maint. And can goto a site to check the status or whatever.