Ubuntu Servers :: Power Went Out, Now System Is Read Only?

Jun 15, 2011

I've done a lot of search and already kind of fixed part of the problem, so this is where the fun comes in. I went away for the week, and not until the day I got back I lost power while out, and my computer rebooted after the power outage to Mac osx, which it's supposed to do as I'm using a Mac Pro and have a regular version of OSX 10.5 on there and my ubuntu server. I restart my computer and I get a few errors and my raid5(3 1tb drives) doesn't mount and says read only for everything else. I finally found a way to remount that raid which while in root I could create new folders and move folders, but only on that raid. I wasn't able to do anything with my boot drive. The weird part is, that now I can't ssh into the server and webmin won't even load. I'm still relatively new(little over a year, but honestly, not much has gone wrong to need to troubleshoot) to ubuntu server, so I'm not that best at troubleshooting it. I won't be home till later tonight, but any tips/tricks/ideas I can try when I get home would be great, or if you need any info, I can get it to you.

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Ubuntu Servers :: Root File System Keeps Getting Remounted Read Only?

May 13, 2010

I have a 9.04 64bit Ubuntu server that I use for a home file server and for downloading duties, every few days the root filesystem gets remounted as read only, usually requiring a reboot and fsck to get everything running again. The box is tucked away in the roof space to keep the noise down so it's a bit of a pain to keep pulling it out to get console access.troubleshoot what might be causing this?/ is on a raid 1 array on 2 8GB usb sticks last few lines of DMESG EXT3-fs error (device md3): ext3_journal_start_sb: Detected aborted journal

Code:
[632280.290419] journal_bmap: journal block not found at offset 23180 on md3
[632280.290470] Aborting journal on device md3.

[code]....

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Ubuntu Servers :: Recovery Required On Read Only Files System

Jun 23, 2010

My server is not accessible any longer locally (192.168.0.2). If I attach a keyboard and login (I have done one pass of recovery from the Ubuntu live CD which helped) and check the IP address it seems to be set. However looking at the syslog file there is a line which says ext3-fs: info: recovery required on read only files system.

Is there a more extensive ext3 recovery facility I can use bearing in mind I will not (?) be able to install it?

I think I'm running 8.6 but not sure where to look to find it.

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CentOS 5 Server :: Read Only After Power Failure?

Sep 19, 2009

I had a power failure the other day and my server shutdown abruptly. After bringing the server up I noticed that the /var partition came up as read only. I was not able to edit the crontab, not able to write to files within /var/log/ and do other write operations within /var.

I did a mount and it showed that /var was mounted read and write but when trying to run certain operations the system was still saying that it was read only.

[Code]...

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Ubuntu :: Operating System Lose Data During A Power Failure As Windows Operating System?

Jan 13, 2010

Will a Linux operating system lose data during a power failure as does a Windows operating system?

(If yes.) This has not come up before but I'm going to be doing some work I don't want to lose.

Could you either point me to a backup tutorial or give me the quick overview of preserving stuff with Ubuntu?

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Ubuntu Servers :: Low Power Home Server

Mar 1, 2010

I've been running my Dell SC440 as a home server/workstation for about a year now and whilst it can cope with both roles, it is power hungry, loud and does get a little slow down sometimes. What I am looking to do is create a home server to take away the need of it to be on 24x7.My requirements in a home server would include:

- Media Server (using TwonkyMedia or uShare)
- NZB Downloader (hellaNZB or sabNZB)
- AFP + NFS file serving
- rsync/unison for Linux backups and N900 media sync and backup
- Email/Calendar/Contacts hosting and sync (zimbra or zarafa?)

I would like to achieve this with an Acer Revo and a couple of 1 or 1.5TB external hard disks, I'm unsure if the Atom processor would be strong enough for all of these services, although I could test it using my netbook, if that can cope, the Revo would be able to easily.

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Ubuntu Servers :: Suplement GPU Processing Power

Feb 25, 2011

About 2 years ago I was trying to figure out a way to use high end GPUs to supplement server processes. I made a post about it:URL...It seems like somebody was able to do this and create a super computer which ran purely on GPUs:URL...It would be interesting to see if this was possible to set up the server kernel to use high end GPUs to add processing power.It should be possible as long as the kernel would handle this as it would a multiple core processor.

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Ubuntu Servers :: 10.04 LTS - CPU (Power Saving) For Home NAS

May 18, 2011

I am planning to make a home made NAS running ubuntu server 10.04 LTS. Nothing fancy, simple samba with open access for all and openssh for admin access over the network. The NAS will not have heavy traffic, two home computers with occasional access, just to serve as central location. I am in doubt which CPU to use and I am after both budget and power saving solution.

1. I have an old Athlon Clawhammer I can use but the TDP of 90W is putting me off. I can also use existing 2x512MB DDR-400 memory with it. The board would be new.
2. I would rather invest in new mini-ITX board with built-in dual-core Atom D525 (TDP 13W), VGA and Gb ethernet. I would add 2GB DDR3-1333 memory.

Since I would need a new board for the Clawhammer too (current one doesn't have SATA), I am more attracted to option 2. Would the dual-core Atom be enough running this simple home NAS? I think it should but my experience with ubuntu server is limited.

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Ubuntu :: Hibernate Will Not Power Off System

May 6, 2011

I've got a problem with hibernating my laptop. It manages to copy everything to swap memory, but when it finishes, it won't power off my laptop. I have to manually turn it off (by pressing the power button for a few seconds). If I restart, everything is still there, so the hibernating itself works, but not the powering off part. My laptop is an Asus notebook K52F with Ubuntu 11.04 and Gnome 3.

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Ubuntu :: System Does Not Power Off Automatically?

May 13, 2010

I am in the process of installing Ubuntu 10.04 LTS on a Compaq Presario 5900Z desktop, circa 1999.

Because of a change to some IDE/SCSI drivers during 2008, no Linux distribution from the fall/autumn of 2008 onward will install on this system using their standard images, every distro I've tried to install this way would report I/O errors. There was a bug report filed on this at Launchpad some time ago. Running the images as Live CD's would work, but the actual install would always fail.

I began this by installing Ubuntu 7.10, then upgrading it to 8.04 LTS. The next step is to upgrade to 10.04 LTS.

When booting up, there is a console message that briefly appears that the BIOS (being from 1999) fails the cutoff (2000) and to enable ACPI, acpi=force must be added to the boot parameters.

The issue is when powering the system off, it will not power off by itself. At one time, there had been a different distro installed on this same system alongside Windows XP and both systems correctly powered the system off when shutting down. Ubuntu keeps the system powered on and I would have to hold in the power button for up to 10 seconds, until it powers off.

I do not know if simply adding acpi=force to the boot parameters will fix this, but I also do not know where to place this. The other distro used on this system actually came with a GUI interface that would allow for something to be added to the parameters. I cannot find anything similar in Ubuntu.

So, my questions are:

1. Will adding acpi=force properly turn the PC off at shutdown?

2. If so, where can this be permanently added to the boot parameters?

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Ubuntu :: Power Operations In The System Menu?

May 7, 2010

Like this neighborhood. I just moved here from Suse. Was living a long time over at slackware but I'm here now.

Q: In suse if you click System in the menus in the top left hand corner all the power operations are there, reboot shutdown etc.

How do I do this on ubuntu - I really really don't like the thingy in the right hand corner...

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Ubuntu Servers :: After A Power Outage, Server Gets Hung In GRUB?

Feb 10, 2010

When power was restored after an outage, my server (running Ubuntu server 9.10) started back up & got stuck in the GRUB menu ("Version 1.97~beta 4" I think) - it didn't do that countdown & auto-select the top item like I'm used to. Just stayed there, and since the server is headless, I had to dig out my monitor & hook it up to see what was wrong.

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Ubuntu Servers :: Apache Restart Fails After Power Loss?

Oct 25, 2010

I have observed a problem twice now with Apache trying to restart but hanging somewhere in the process. This happens after a power failure; the machine comes back just fine, but not the web server. The machine is on a UPS, but occasionally it runs out of "juice" before someone can get to it (we have a generator for emergencies). When this happens, a ps indicates about three processes running that are trying to start Apache, but they just sit there - this time for three days since the power failure was on a Friday. I can fix this by killing those processes and doing an Apache restart - but that takes human intervention, which is not acceptable.

I suspect this may have to do with SSL, since when I do a manual restart it asks me for the SSL password. There must be some way around this so the system can recover on its own. This system's web site runs under SSL since it maintains medical information that must by law be protected. But it also could be life-threatening to someone if the system can't come back and as a result a person can't get help.

So I would appreciate some guidance as to what I could change that would allow for system recovery without intervention. I'm happy to provide any configuration file info, if you tell me where to look.

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Ubuntu Servers :: Lost Months Of Data After Power Failure?

Nov 13, 2010

Running Ubuntu headless server 9.10 with a RAID 1 on ext3. After a power failure (UPS power button was hit accidentally), I logged into the system via ssh and found that I had lost all data since my last reboot, which was 4 months ago. It was as if I had a perfect snapshot of my machine from 4 months ago. Everything, database files, logs, all report as if the machine had been off for 4 months. Fortunately, I have quality backups of all my data so I am able to recover, but I have never had such a problem before and I cannot figure out what happened.

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Ubuntu :: System Hangs When Deactivating Swap For Power Down

Mar 5, 2010

I'm running Ubuntu 9.10 otherwise flawlessly on a 2007 core 2 duo Macbook. Right now its set up to triple boot with OS X Snowleopard, Windows 7 Ultimate, as the other operating systems. I'm asking because I'm frequently having to force my system to power down after shutting down from Ubuntu, and I'm concerned that I could be corrupting files and damaging my hardware.

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Ubuntu :: 10.04: File System Failure After Power Outage

Jun 8, 2010

I recently installed Lynx 10.04 amd64. Twice now, my entire file system has become unusable -- each time after a short power outage (2 seconds).

In the first setup, I had two primary partitions: 1) / that was ext4; 2) /home that was ext4.

In the second setup, I changed the /home to ext3.

Both times, after booting up following the power outage, I received a message saying that "serious errors" were found in /home. But, after several reboots, I was able to login and use the system. Then, some time later, I would started getting "Read Only" messages when trying to write to the file system.

fsck gave the following message: "/home terminated with status 4". I received numerous "I/O error" on sda messages.

My question: Is this vulnerability due to using ext4 or is it related more to something else in Lynx 10.04? Further, what can I do (other than buying a power backup device) to avoid my file system becoming unusable after a power outage?

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Ubuntu :: Complete System Freeze On Battery Power?

Nov 4, 2010

I have an Acer aspire notebook.graded from lucid and now I have a really big problem:every time i disconnect the ac-adapter from the pc, the system freeze completely, became unresponsive to commands and to sysrq. i need to phisically turn off the machine and then back on.

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Ubuntu :: Error Creating File System: Helper Exited With Exit Code 1: Cannot Open /dev/mmcblk0p1: Read-only File System

May 2, 2010

I bought a new SD card which I intend to put some MP3s on - except that I can't write to it because it tells me the destination is Read Only. No-probs thinks I: I'll just reformat it.

"Error creating file system: helper exited with exit code 1: cannot open /dev/mmcblk0p1: Read-only file system"

Various chmod commands all result in Read-only file system. I tried umount then mount commands, but it couldn't find it to mount once I'd unmounted it using the same /media/ file path (I assume it's the only one).

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Ubuntu Servers :: Fan Control - Power-Noise Optimization On The Proliant DL120 G6 ?

Jul 12, 2011

I'm trying to get the HP Proliant DL120 G6 server a lot quieter after startup under Ubuntu Server 11.04 (x64).

For now, it seems like there is no fan control at all: when I start the server, the fans start running at max speed, then it slightly lowers to 3.5K-5K RPM. Once there, it never goes down or up. There's just no fan or power control at all.

In no specific order, I will describe as much as I can my situation.

The system is IPMI 2.0 compliant, so when using the ipmitool package I can get the values of the sensors like this:

Code:

I tried to follow the procedures for using the fancontrol package together with lm-sensors, as shown at [url]. One of the very first steps is to launch "sensors-detect", which gives:

Code:

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Ubuntu :: Remove System Settings Access From Power Button?

Jul 29, 2011

I am very close to deploying Ubuntu 11.04 to my school and need to remove the access to the "System Settings" to the students. This is the last thing I want them to get at. I had 10.04 going but ran into other problems that 11.04 solved and allave left is this problem.I can lock them out of all those nasty options you don't want students to get to in a lab setting except for this

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Ubuntu :: System Not Booting (Strange Power Save Mode)

Jul 31, 2011

Out of nowhere my computer will not boot up. I get the message like this
NMI received for unknown reason 29 on CPU 0.
Dazed and confused, but trying to continue
Do you have a strange power saving mode enabled?
NMI received for unknown reason 39 on CPU 0.
Dazed and confused, but trying to continue
Do you have a strange power saving mode enabled?
I read something about it being the video card, so I took my old one out which it being an ati, an replaced it with an nvidia.

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Fedora :: Cant Power-off - Just Show System Halted

Mar 3, 2010

I Run Fedora 11 and i have problem after shutdown computer. My computer cant power-off, just show "System Halted".

PC Model : Compaq Presario SR1400CF Desktop PC.

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Ubuntu Servers :: The Internet Went Out Last Night Due To A Faulty Power Supply On The Main Line?

Mar 17, 2010

So now that it's working the Server can't be seen from the internet. I see that the router changed all the ip address so I changed the fort port forwarding on the router and still not working. And the external ip address has not changed.

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Ubuntu Servers :: 10.04 Install - On Power Edge 1850 - Start The Partitioning It Hangs Up On 33%

Apr 20, 2011

Im having a bit of an issue installing Ubuntu Server 10.04 on a Dell Power Edge 1850. I am running RAID1 via the onboard PERC4 controller that is set to emulate MASS storage. I am able to boot from the disk and run through the initial setup, however, when I give it the go ahead to start the partitioning it hangs up on 33%. It does this on both the Guided full disk and guided full disk LVM. I have run a check on the disk as well as memory.

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Ubuntu :: File System For External Drives - Won't Get Corrupted When The Power Fails

Aug 10, 2010

I'm going to reformat my external drives to get rid of the crud that I've built up. (Crud being incremental backups, windows software, and similar things.)(I also want to get rid of the FAT32 file system that they use.) These are USB 1TB drives. The theory is that data is written to it once, but read back a number of times. (I also burn that data to DVD. If there was software that could organize 5TB of data on DVDs, I'd be using them.)

I"m trying to decide whether to use ReiserFS, Ext4, or another file system. Basically, I want something that:

* Won't get corrupted when the power fails;
* Can handle files that are 4+GB in size;
* Uses extends --- preferably without user intervention;

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Ubuntu :: Power Saving Mode (monitor Off) Complete System Freeze?

Nov 21, 2010

when my monitor turns off after 30 minutes, I cannot do anything after. We're talking complete lock down of Ubuntu 10.04 64-bit. Not even alt+printscreen+REISUB reboots the machine; I have to do a hard reboot (which sucks and is hard on hardware).

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OpenSUSE :: No Power/Energy Profiles In System Settings?

Aug 21, 2011

It appears my profiles are gone, and thus i have got no way in changing settings in the 'Desktop Configuration' (Systems Settings)so, when I go toapp starter --> Configure Desktop --> Power Mgmtthere are NO profiles under 'global settings' or 'power profiles'anyone has got an idea what's cooking here

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OpenSUSE Install :: Power Failure, System Rebooted To CLI?

Jun 21, 2011

the power on my street went out overnight, and I came home to a rebooted computer at the command line. I shut it down and rebooted again, also tried the failsafe mode, but it keeps going to the command line. Looked in the BIOS and it didn't see my hard drive settings. But I can see the HD fine when I booted using the live CD (that's how I am able to post here

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General :: System Is Rebooting From A Crash/power Failure?

May 8, 2010

I'm trying to come up with a startup init script that will check to see if the system was shut down gracefully, or if it is rebooting from a poweroff or something similar?Anyone know of a way to check for this condition with the least amount of room for false positives or vice versa?My intial thought is just a startup script that will will check for a file on startup, and on a proper reboot/shutdown just touch the file. But id like to avoid that type of script if possible,

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Software :: System Inactivity In Gnome Power Manager?

Apr 21, 2010

gnome power manager judges the system inactivity by the CPU usage (as well as the input device usage). In other words, it goes to sleep mode when the CPU usage is lower than 5 % for dozens of minutes set by a user. I'm just wondering the reason why 5 % of the CPU usage. Isn't it possible for user processes to be working with under 5 % of the CPU usage?

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