I have a system with 10 drives running Linux software RAID using RAID 6. Today the system stopped responding and needed to be hard power cycled. The filesystem on the RAID (note, not the root filesystem, that's on its own drive) is in tact and the data is still there.
But I noticed during the boot sequence this:
The first part didn't surprise me, it just seemed that a drive dropped out. No big deal, RAID is designed to handle just that. But that last bit concerned me. I didn't like the term "capacity change" on my RAID.
As I said before, the filesystem is fine. No change from before:
But /proc/mdstat says this:
Notice the [10/9]. I've seen it say [9/10] when a drive mistakenly dropped out before. And after re-syncing it went back to [10/10] as expected. But does this mean something different? Is there something else that needs to be done besides just letting this finish? Has the RAID somehow changed its shape in some way?
I've resisted the urge to post for as long as I could. I use these forums quite often in finding answers to the numerous linux questions that I've had & found it to be a great resource. For some reason after an innocent reboot of my Fedora 12 Core system, GRUB decided it would no longer load the O/S. I was just getting a flashing _ in the top left of the screen. I thought there must be a problem with the partition table & have used the systemRescueCd to run testdisk (I have made a copy of the disk first to an image file using dd - don't worry I made sure I got the commands around the correct way!).
testdisk shows that I have a partition which is bootable & Primary, which appears to be the grub partition (I can list the files in test disk). However when I search the disk I get the following after it has found a couple of partitions. (it is an 80Gb disk)
I didn't realize my system drive had filled up... and TaskWarrior overwrote my 'pending.data' with a 0-byte copy. d-: I had worked SO hard to get all my tasks imported from various other notes (many of which I deleted along the way), and hadn't yet prepared for the possibility of data loss. Should've set it up to use my Dropbox...why doesn't TaskWarrior make ANY backup buy default? That data is so important, and yet so small and trivial to backup. Anyway, my 'undo.data' is totally intact and seems to contain all the information theoretically needed to reconstruct 'pending.data'. Unfortunately right now I have no sample 'pending.data' to look at. d-: OR: does anybody know of a simple Linux utility I can use to recover previous file versions? It's possible no data was overwritten, since the replacement is empty.
I put my 8 Gb USB drive in the slot tonight to rearrange some pictures (jpg and gif). When I attempted to cut and paste the cut function was not available. I checked the file properties and the files were all read only. I tried to change the permissions, but was presented with a message box: [[The permissions could not be changed. Sorry, could not change the permissions of "115.jpg": Error setting permissions: Read-only file system]] How to get back my permissions?
I wan trying to install Debain on a 4GB USB drive while running the setting something happened with my pc and i had to restart it.I try to boot from the USB drive it worked but was giving a empty cursor. the installation did not continue.i open the USB drive in my pc now but it shows just 300 MB space and lost the 3.7 GB space.I think space of USB drive with that partition, can i recover my USB drive lost partition space ?
I installed Wubi 9.10 on my windows 7 net-book and it failed to install, so I found a tutorial and tried again to install Wubi. My problem now is it failed a second time now because I did two attempts of 30 gig installs I am missing 60 gigs hard drive space and cant figure out how to recover the lost space. I have uninstalled Wubi / Ubuntu from programs but still no recovery. It needs to be recovered so I can dual boot properly given that I use Ubuntu and Windows
I have 3 drives in my computer. I installed Fedora 11 on my two biggest one, with the LVM treating them as one single drive. I attempted to install XP on my last drive. As I was installing, I selected my third drive (I'm 100% sure it is the correct drive as it is an 80gb whilst the others are 120 and 200 respectively) and told it to delete the partition on that drive and format. After I did that, it started to format, starting with my 120! I'm fairly sure that it was merely a quick format, as it only took 5-10 seconds for it to format, and that my data is still there. Is there any way to recover my "lost" data, or did I just really screw myself over?
I was trying to install a new hard drive and in the process have managed to not only format my old hard drive but lost all my stuff as well. I am running a live CD but unable to mount the said hard drive. I Know its there.
fdisk tells me:
As you can see its still registering as /dev/sda, I am unable to mount this to run a undelete program on it.
a e2fsck tells me
The superblock could not be read or does not describe a correct ext2 filesystem. If the device is valid and it really contains an ext2 filesystem (and not swap or ufs or something else), then the superblock is corrupt, and you might try running e2fsck with an alternate superblock: e2fsck -b 8193 <device>
We had a drive failure on /dev/sda. Everything 'except' boot was on raid5 across sda, sdb, sdc, sdd. I know how to repartition a new drive and rebuild the raid etc, but I don't know how to regenerate the files that reside on the boot partition. I really don't want to re-install as we have lot of custom code and software that may depend on our current libraries and build environment.
I just lost over 300gb of files due to my external hard drive crashing.There was an error with the files system.I tried formatting on Slackware but cfdisk didn't work for me.I'm looking for something much easier with a GUI or something similar to the Disk Utility that you get in Ubuntu.And also which format do I format my external harddrive to?Something even more stable than ext4 or ntfs? Cause I do not want my external hard drive to crash again.
This is my 6th install of Fedora, begining with Fedora 4 I have had very good luck with all until 9 and I lost all data on drive by my bad clicks in a frustrated session. Now I have a great install of Fedora 10 with the exception that I fouled up and typed in a user (myself-'andybill') and am finding out that the work I need to do cannot be maximized by operating in user - andybill, I need to be super user. I have just moved and have not done any collaboration with our senior partner in a data development start up that he is the intellectual property in deed and law. For me to get back on track my using this OS I have to be master of all libraries, drivers etc. I am a nu-b (only 2 1/2 years, with no computer science background. This explains why I need step by step commands without abbriviated lingo-So if I can remove myself as andybill, make all root
I was using yum to update a server, then my putty session to the server dropped.
I reconnected, and now when i try to do a yum list updates, i get the following message:
Another app is currently holding the yum lock; waiting for it to exit... The other application is: yum Memory : 42 M RSS ( 53 MB VSZ) Started: Fri Dec 3 12:05:30 2010 - 06:55 ago State : Sleeping, pid: 21762
Does that mean its still installing the updates i asked it to, and i just need to wait for that to finish so i can see what updates are left? or am i really in a bad spot now?
I have a second hard drive in my desktop and both the main dirve and second drive are 250GB. I use the second drive for backups, both manual and using back in time. The other day I noticed that the second drive was formated in FAT32. If I go to disk utility and look at the drive it says:Usage:FilesystemPartition Type:Linux (0x83)Type:FAT(32-bit version)Is this ok? I thought in Linux it should be Ext4. So far its been working fine for a while now but if I need to move my files and re format it to ext4 and move them back I would rather do it now when there is less data on the drive.
I have a USB drive on which I want to install Arch Linux (using the installer, not unetbootin or something similar, as I want the drive to be persistent.) The computer from which I want to boot this USB supports booting from a USB floppy, not a normal drive. Is there any way for me to make a USB floppy on another drive and use that to boot the normal USB drive?
no entries exist in the /dev folder for hdc,cdrom,dvd, or any other drive or drive type than hda. The only other similar device is sg0 which doesn't work either. I have tried every variation of mount I can find with every available drive and drive type and nothing works, but this is the drive I installed FC14 with, and it installed perfectly (except for forgetting where it came from!!)Do I have to install a module or recompile the kernel just to get linux to recognize the drive it came from?
I am new to Linux ,i did one project in windows which will block the thumb drive with respect to serial number(Device instance ID) of the device.i am planning to do the same project in Linux using c/c++.I am very new to Linux,there is no drive letter for thumb drives we insert into Linux OS.How to get Drive letter and how to get Device instance id of thumb drives please help me get some clues.please provide me any tutorial or any links .w if have any other clues to block devices with respect "block list" and "allow device list".if the serial number in block list it has to block if serial number in allow device list it has to allow thumb drive to access.
I want to move a folder from USB drive to desktop, any directory, let say usr directory. But don't know what the name for usb drive and where to find it, i know i am going to use mv command.
I have a php script which uses php mail to send us the results from a web form. If I set the email address to receive the form as my yahoo account I receive the email fine, however if I set the email address to receive the form as an address with our domain name we never get the email.
I have searched on google to see if I could find out what was happening and did see some references to issues where if the web server was sending an email 'locally' it didnt check the mx record. Which seems like whats happening - but I am not sure how to tell linux (centos) where the email for a 'local' email should be sent.
how to retrieve lost password to file server storage) running Samba 3.0.14a-Debian? Access to file server from windows PCs via LAN , no direct access.Where the password stored there and how to retrieve?
in My Ubuntu host,I often use samba service to open the share fold of another computer which is WinXP .But everytime When I logout or restart the Ubuntu ,The link will lost ,I have to reconnect it again, I want to know if there is some easy way to connect it always
I was backing up my hard drive last night when the backup drive died. Somehow some files are now missing from my hard drive. Any idea how to recover them on the hard drive. I'm using Mint 7, I was preparing to move to Mint
We have 2 computers connecting the wireless network. I reinstalled the linux machine and lose the saved wifi password. I don't have the router access password. I am looking at other computer running Mac and see wifi password as xxxxxxxx. Is there a way to see what wifi password is (from the Mac computer)? The "show password" button is disabled.
I have an external drive which is formatted for Linux (ext3) and want to re-format it to use it under windows. I have no data on the disk that I need, just want to re-format so I can use it for a backup for my windows7 laptop.
I had a program print lot of data on the terminal. The terminal scrolled over and now I cannot see all the data. Some of it is lost. How do I get it back ?
After I managed to crash my Debian on a version upgrade and failed to reinstall it by the netinstall CD I decided to switch to Ubuntu on my (old) fileserver. Unfortunately some of the disks can not be mounted:
Here is a test code for memory alloc and free. It is to detect whether the allocs and frees match. From the result, after backtrace call, there is some memory alloc, but it does not free these memories after calling or the process exit. Why? Nomorlly, the memory alloced need to be freed after use, or the memory will leak. But I run this program for about some times, and find that though the system memory does not real leak,the free memory decreases, and the cache increases(Use free command).
