Software :: XFS Filesystem Spontaneously Shrunk By 12TB ?
Jul 8, 2010
I'm running a system where we had a 62 TB XFS filesystem running on top of a LVM2 logical volumes (which in turn is comprised of 5 PVs, each of which is a external 16 bay RAID). Well, this weekend there were some I/O errors on the filesystem. I rebooted and then ran xfs_repair. The filesystem looked ok, but then I noticed using df, that it was only reporting 51 TB!
I looked at pvdisplay and also noticed the entry for one of the PVs is as follows:
Please note where it says that 12.00 TB is 'not usable'. I don't know what precisely is meant by 'not usable'. I looked back and it looks like it's been this way before the problems this weekend, but it is very suspicious.
I really have no idea as to how to proceed. I've never seen anything like this before. lvdisplay says the volume is 61.85 TB. parted says the filesystem on top of this volume is 68.0 TB. xfs_info says the volume is 51 TB, which is what df -h is also saying.
The system is Centos 5.x (not sure which version, but the kernel is 2.6.18-128.1.14.el5). Hardware is a Dell Poweredge 2950 with an LSI fusion SAS card, which is connected to a SecurStor ES RAID 16 bay unit w/ 4 additional JBODs.
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Feb 16, 2010
I have a large RAID array of 12 TB attached to one of my Ubuntu server machines. The RAID volume is formatted with NTFS. The problem is that I can not mount this volume in Ubuntu. I can read it normally if I attach it to windows machine.This is the output from "sudo fdisk -l":
sudo fdisk -l
Disk /dev/sda: 164.7 GB, 164696555520 bytes
255 heads, 63 sectors/track, 20023 cylinders[code]........
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May 11, 2011
I did all the fsck, resize2fs, lvresize, pvresive, parted, etc. stuff and was very careful about what I was doing, but clearly wasn't careful enough. I did backup lv_root to another drive with fsarchiver before I buggered things up, but I can't restore it because, well... I don't know! At this point I'd really just like to wipe the drive I messed up except for /boot and start over but I don't know how to do that when the system seems to think the drive is mounted when it ISN'T.Here's some info:- device is /dev/sdb with sdb1 as /boot and sdb2 a lvm2 volume group containing lv_root and lv_swap -- it was a default Fedora 11 installation that used up the whole drive- i did nothing to /boot and it seems to be fine, grub loads, choosing Fedora 11 shows the logo but quickly becomes a black screen, choosing Fedora 15 Live USB that I originally added from Fedora 11 works just fine (currently trying to fix things from Fedora 15)- i deleted and recreated lv_swap and it still shows up in /dev/vg_box- i shrunk lv_root and the filesystem is within the right size of the lv, which is within the right size of the pv, which is within the right size of the partition, which i made sure i used the right sectors, but lv_root does not show up in /dev/vg_box.
- lvscan says both lv_swap and lv_root are active but lvdisplay says lv_root is "NOT available"- system thinks /dev/sdb2 is mounted even though it ISN'T and can't seem to do ANYTHING to it because of thislvchange -ay /dev/vg_box gives:
Code:
device-mapper: resume ioctl failed: Invalid argument
Unable to resume vg_box-lv_root (253:2)
[code]....
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May 2, 2011
I've upgraded (though at this point it doesn't quite seem like an upgrade ) to the Natty and have had a pretty good load of issues*.
I've gotten the system to a working state, and things seem ok, aside from this:
Screenshot.png
I've got a few applications (Skype, etc, etc) that are now squished into a single pixel in the notification area. I can right click on it and get the context menus from them, but that isn't exactly the greatest solution.
*I've had to switch over to the classic view, roll back my nvidia video drivers, and reinstall mozilla shredder/sunbird.
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Jul 10, 2011
Here's the thing: When I work in Xfce session or in Xubuntu session (10.10 on Acer Aspire One) the whole DE switches from Xfce to Gnome. I see it not only on the change of the desktop wallpaper, but on application menu, context menu etc. It changes from my Xfce setup, which I know and love, to Gnome and then back in some 1 to 3 second interval. It switches back and forth untill it finally stays on Gnome. I love Gnome, but would like to have working Xfce on this machine.
I googled for similar problems and possible solutions before posting here, but wasn't successful.
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Dec 31, 2010
I downloaded a file that was 40mb compressed and was almost 700mb when fully extracted. It was inside a .rar file that in turn was inside another .rar file. How can this be done in Ubuntu? Can this also be done with .zip and .7z files?
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Sep 28, 2010
I am running 10.04 Lucid on a Toshiba Satellite A105. The onboard video is an Intel Graphics Media Accelerator 950. The issue is that when I connect it to my Panasonic widescreen TV (laptop is widescreen as well) the display is shrunk and has a lot of unused space on the sides/top/bottom. So like, if I wanna watch something from Hulu, I plug in the S-Video, and I can watch on the TV, but it's not using all the screen available... I have not found a way to resize the output so it fills the screen.
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Oct 12, 2010
my OpenSuse 11.3 worked absolutely perfect - till now ! It suddenly started not to load KDE, but instead prompts the login screen. When i then log in, it just crashes after a minute or so. I tried to boot in IceWm and it appeared more stable to me, but when i opened a programm like firefox or gimp, this Environment crashed too.
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May 26, 2010
I've been running Ubuntu on my PC for a while. I liked it so much that I decided to see if I could give new life to my old Sawtooth G4. I installed Ubuntu 9.10 using the alternative installer and everything seemed to be going fine. However, and without warning, the video cut off. I restarted only to have the same thing happen repeatedly.
what's causing this problem and how I can resolve it? I'm not sure if this helps, but my G4 has been modified. It has a ATI Radeon 9200 video card. It also has a 1.2 Ghz processor.
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May 18, 2011
I am very new to linux, and I have a question regarding the filesystem check (fsck). The power recently went out and when I tried to restart linux the following error appears:
*/dev/sda1 contains file system w/errors, check forced it then goes on to say..
*An error occured during the file system check. Dropping you to a shell; the system will reboot when you leave the shell. Give root password for maintenance (or type Control-D to continue) I wasn't sure what to do, but checked some other online forums and they suggested running fsck manually - so I typed in the root password - and used the command, "fsck -A -V ; echo == $? ==" it then gave the following message
*WARNING!!! Running e2fsck on a mounted filesystem may cause SEVERE filesystem damage
*Would you like to continue (y/n)
Again, I wasn't sure what to do so i just checked no. I then manually turned off the computer and was prompted at the beginning to press Alt-3. I was brought to another screen and it informed me one of the drives was degraded and suggested rebuilding the array. I tried doing this, but it still brings me back to the original error of, "/dev/sda1 contains file system w/errors, check forced," and the process continues.
Also, when I tried to rebuild the array, I didn't backup any of the data on our home directory before doing this (which was probably a big mistake). After being prompted to type the root password, I was able to give the ls command and look at all the directories...the home directory where our data was stored was empty and I am afraid I may have lost some information. Is there a possibility that data was lost when I was trying to rebuild using the old drives?
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Aug 27, 2015
Debian Jessie
Iceweasel 38.2.0
Icedove 31.8.0
Iceweasel and Icedove spontaneously crash, sometimes individually, sometimes together. Upon restart they will both run, but the amount of time they run before crashing again decreases with each crash. The way to extend use of these programs is to reboot Debian. (I typically run my computer 24/7 to run community service programs.)
How do I get these programs to run without spontaneously crashing?
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Feb 17, 2010
I just did a fresh install of 9.10 about 4 or 5 days ago on my HP dv7 computer. I have a Broadcom 4322 wireless card. I had some initial trouble getting my wireless to work, but I was able to find and install the Broadcom STA wireless driver necessary for the wireless card to work, and since then it was rough skating, but at least it was skating, until about half an hour ago.
Everything was working fine until my battery died unexpectedly and the computer shut down. When I restarted it I was not able to reconnect to wireless, and although I have the Broadcom driver installed, it says "This driver activated but not currently in use." I have a touch panel to turn on my wireless which is supposed to turn blue when I touch it to signal that the wireless is on, but no matter how hard I try, the touch panel wireless button stays orange. It does not seem to be able to recognize that my wireless card exists.
[Code]....
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May 31, 2010
I just got a fresh Ubuntu 10.04 install on a system, added Lubuntu (the poor thing's 10 years old), and added a second user and gave him sudo/admin rights via the Users and Groups app. All was working fine, but now the initial user can't make any system changes. The initial user can still execute sudo and gksudo, but not much else.
In the Network Connections applet, the initial user can't edit the "Auto eth0" connection, the "Edit" and "Delete" buttons are just greyed out.
In User and Groups, I can click "Advanced Settings" or "Change" on another user, but nothing will happen. If I click "Add User" as the initial user, it will give the "Not authorized" popup.
I had a second user that I'd given adminstrator/sudo access to. So to change the network settings I logged in as this user for the first time, and was able to change some things. However, after a reboot I had the same problems with this new account.
I haven't done anything with this install besides install openssh-server, add some firewall rules with ufw, and add the Lubuntu desktop. Most of my google results turned up basic stuff like corrupted sudoers file (mine is still in pristine, default condition), and not being part of the admin group (which both users still are). The behavior also persists regardless of whether I use gnome or Lubuntu for my session.
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May 17, 2011
I recently upgraded from Ubuntu 10.10 to 11.04. My hardware can't support fancy effects, so I'm using the "Classic (no effects)" desktop.When I logged in, all programs would be themed in one way, then 15 seconds later everything would change to a different theme. Neither of these themes was the theme that I had selected in the configuration. I came here to ask for advice, but discovered this first:http://www.romaco.ca/blog/2011/02/20...s-with-ubuntu/Summary:gnome-settings-daemon has a race condition that is triggered if it starts too fast.
Workaround:
in
/etc/xdg/autostart/gnome-settings-daemon.desktop
[code]....
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Jul 13, 2015
I tried connecting my Debian laptop to a vintage Apple //e using a Super Serial Card on the Apple side and a USB to serial adapter on the laptop side. It kind of works -- I can send data over to the Apple using e.g. echo "foobar" > /dev/ttyUSB0 or via minicom --, but every 20 seconds (quite exactly!) some 4 random characters appear on the Apple's screen (mostly tildes, sometimes a pipe). This does *not* happen when booting the laptop into Debian rescue mode; so I guess it must be some (daemon?) process messing around with the usb serial device in regular intervals.
I tried to disable quite some services, but the problem remains.I don't have any clue how I might catch the evil-doer in the act -- virtually all serial monitors I've so far read about allow only monitoring the interaction of a known program/process with a serial port. But in this case I first have to actually find out which process is talking to the serial port in the first place.
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Mar 10, 2011
I decided to swap my existing small hard drive for a bigger one which went well. Then I formatted the old drive using a windows vista machine before putting it on my spares shelf. To my amazement after formatting my 20GB hard drive had become an 8GB hard drive. I fear the worst but remember that Ubuntu put a large swap file on the drive and wonder if Vista has just ignored the system partition. I tried attaching it to my Ubuntu laptop which reports a healthy 8GB hard drive even after formatting again. I don't know enough about Ubuntu to try repartitioning it in that so I tried DSKCHK in windows which reported a healthy 8 GB hard drive. Is all hope lost or is it a "hidden" partition which might be recovered under Ubuntu? If so, how?
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Jun 2, 2010
extended sata partition shrunk at 15 partition limit, how to re-enlarge i hit the 15 partition limit, forgetting it now exists for sata drives, thinking i would add more. upon creation of the 15th, it squished the end of the extended partition to meet the last logical partition, leaving a large unallocated portion after the extended partition, which seemingly nothing can be done with, just sat being wasted space. i have since deleted a few of those partitions, but so far have still failed to find a way to recoup the unallocated space back into the extended partition.
[URL]
if necessary, i'll do it the painful long winded way of backing up and starting the extended partition again from scratch, but i really rather wouldnt have to do that. i'm sure there must be a way of telling the extended partition to once again reach the end of the drive.
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Mar 27, 2010
When I try to boot to OpenSUSE I get the following error during boot-up: unknown filesystem type 'reiserfs' could not mount root filesystem - exiting to /bin/sh$
This only started happening quite recently - before this I could boot to Linux quite happily.
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Mar 11, 2011
I am trying to mount a file image, like this
mount -o loop /tmp/apps.img /media/apps
But I get the following:
mount: you must specify the filesystem type
I try ext3:
mount -o loop /tmp/apps.img /media/apps -t ext3
dmesg says:
error: can't find ext3 filesystem on dev loop6.
I've also tried ext2, vfat etc. How can I detect the filesystem type of apps.img?
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Jul 9, 2010
I have a following problem: Recently my drive with Ubuntu 9.4 has mysteriously stopped working, i.e. when I switch the computer on it informs me that GRUB didn't find the filesystem. Well, I suppose it happens.
First, I though it was due to the drive dying, but I popped it in an external enclosure and HDTune told me the drive was fine. Wanting to recover the files on the drive before reinstalling I first tried to mount it in said external enclosure under Windows (I have Win Ext2 driver installed which used to work just fine). This time, however, drive gets assigned a letter but upon opening it Windows popped up an error saying that the drive was not formatted and whether I would like to format it then.
Unfazed by this streak of failures I tried to mount it under Linux but, alas, to no avail. I might have tried every single -t operator under mount command but it still won't budge and let me mount.
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Mar 24, 2010
I've had a look at some similar threads but as I'm very new to linux they're already a bit technical for me. Sorry, this calls for someone with patience. I gather from other threads that disconnecting an external drive without unmounting is a no-no, and this seems to be the likely cause. Now the disk is read only and I'm unable to change any settings through the usual control panel on ubuntu. I'm just not familiar with the terminal instructions. I tried to cut and past a few command lines from other threads but I got some warnings that proceding could damage data. Like this one: WARNING! Running e2fsck on a mounted filesystem may cause SEVERE filesystem damage.
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Sep 2, 2010
I have had a new problem that just started this past Sunday, Aug 29 where the filesystem goes to "read only" all by itself. We have made some changes to the host (same distro) to activate the 2nd NIC (assign DNS, etc). Prior to that the system has been running fine with over 5 months uptime no problems. The environment is an Ubuntu host on VMware with 2 Ubuntu guest VM's, one running postgres and the other RoR.
I found something similar here:[URL]...but I don't know exactly what is going on, or what may be causing this. The first occu0rrence was this past Sunday morning, sometime between 04:30 and 08:00, followed by a 2nd occurrence late Last night, Wednesday, September 1 sometime around 21:00. In both cases I rebooted the VM and the drives mounted according to the fstab as rw and all was fine for the time being. The interval was about 3-1/2 days, so if this is a pattern I would expect the next occurrence sometime on Saturday.
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Oct 1, 2010
I would like to build a SAN with like 4 TB of space on it. What is the best way to accomplish this task?
- What exact hardware would I need.
- What exact software do I need.
- How to bond two Ethernet cards together to get better network performance out of the box
I am looking to find a cheap rack-mount server cabinet. What is the best file system for a SAN? Is there a particular distro that works well with this? I prefer CentOS as that's what I have been learning on.
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Aug 1, 2010
openSuse v9.3 (Yes, it's old)linux 2.6.11.4-21.17-smp i686At some time after July 28 the entire filesystem has become read-only. It was functional on July 28, the last time I logged into the machine and edited a file. Even as the superuser when I attempt to change, say, the permissions of a file, I get:
Code:
> # chmod 777 /opt
chmod: changing permissions of `/opt': Read-only file system
[code].....
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Feb 8, 2010
I can't restart ubuntu, because of an error during filecheck. Something like:
Code:
usplash failed
usplash could not set to 1152x864
Mountall failed
Filesystem could not be mounted
Do a manual fsck to repair error When I run fsck, it sees some multiply-nodes, when I try to repair them, it says:
Code:
Fail: Multiply-nodes allready copied or repaired After fsck is done, I have to reboot. And the cycle repeats.
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Apr 2, 2010
I currently dual boot one of my systems with Windows XP and fedora 12After having problems with fedora 12 where the wireless wouldn't work yet again when I upgraded, I just want to wipe it completely and replace it with Ubuntu.
After I have doing some reading I noticed that Ubuntu doesn't use the RAW filesystem format and EXT4 filesystem is new so as I manually need to format my disk for Ubuntu I have one question. As the other has been answered.Do I need reformat my GRUB partition as well. If, so what format should that be in?
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Jun 24, 2010
I was happily browsing my new Linux Ubuntu Distribution, and a warning message popped up stating that there's about 145 megs in FIle System. how to solve this problem other than removing files?
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Dec 11, 2010
Well I did something really stupid:sudo chmod 700 -R /Why? because it's late and I'm tired and somehow thought it was only on my current dir...Is this somehow fixable? I don't get my usual loginscreen so I guess through an tty?
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Mar 19, 2011
I have just got an SSD (Kingston SSDNow 100v 64Gib)It supports TRIM, and is definitely one of the better ones available.I am asserting here that the "limited number of writes" problem is a myth, so I'm not looking for an answer to that.My question is, what filesystem will help me get the best performance out of my SSD? Bear in mind SSDs excel at random access time, but sequential file performance is meh
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Jul 29, 2011
I have a collection of ELF executables that I am trying to run from a FAT filesystem. How can I do this without modifying the OS?p.s. I am running 11.04
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