Ubuntu :: 10.10 - RAID Volume Not Mounted
May 8, 2011
I have v 10.10 running the following (and I still have no idea how I got this all working). Myth, Squeeze server, X10 control system for the house, Virtualbox (where I run some windows stuff) and a general file and print service. It has 5 disk drives attached
1 - system disk
5- external usb to back up data to
2,3,4 - 2 tb drives in a raid config
I just restarted the server and the raid volume has not mounted. I looked in the webmin interface and the device is there but it doesn't seem to have the partitions attached. Again in webmin, the partitions seem to be on each of the drives. I used crash-plan to back up the data and music, but not the video, so I would prefer not to have to rebuild the lot if I don't have to. I really don't want to re build the lot out of my lack of experience with Linux. Is there an easy (ish) way of putting the raid back together to see if it's just dropped its config and the data is in tact (or can be rebuild from two of the three drives).
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May 7, 2011
I have a system with a 2TB RAID level 1 installed (2 x 2TB drives, configured as RAID1 through the BIOS). I installed Centos 5.5 and it runs fine. I now added another 2x2TB drives and configured them as RAID1 through the BIOS.
How do I add this new RAID volume to the existing logical volume?
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Nov 25, 2010
I am trying to create a link to my windows xp workgroup where all my data is stored (I was surprised that linux could even see it!) I mounted a volume on the desktop apparently... that worked fine until I rebooted and it had disappeared. it was fairly annoying that I had to go back into the network and re-mount the volume. How can I get it to stay put, even after rebooting?
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Mar 25, 2010
I shared a few directories using samba which can be detected with XP or OSX over the network. However, when I try mount those folders this error occurs (OSX): 'Volume X could not be mounted'.I checked that smb as wells as xinetd is running and that the firewall ports are open (also tried deactivating the firewall with no success).
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Nov 15, 2010
I have an iSCSI device that is large, ~17TB usable, and I've created an XFS file system at the device level. I mount the device no problem and am able to touch and remove files without issue. I start my application and within about 5-10 minutes I start seeing the following entries appear in /var/log/messages
[Code]...
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Apr 27, 2010
I am trying to mount Samba share with following command
Code:
mount.cifs //192.168.0.3/shmelevsky /mnt/tmp/ -o user=shmelevsky,uid=1000,gid=1000
it works fine, I could create/edit files and folders, bu I could not change permission for them:
Code:
root@darkstar:/mnt# chmod 700 tmp/www/
chmod: changing permissions of `tmp/www/': Permission denied
root@darkstar:/mnt#
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Jan 15, 2010
I'm wondering if there is a way to shrink an ext3 LV mount as / .I tried to with resize2fs ... but seems that isn't possible if the partition is mounted.
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Apr 21, 2011
I'm running 10.04 server on a Mac G5 with 2 network interfaces, one pointing to my network (192.168.0.x) and the other to a local partner network (192.9.100.x) with which we share a network volume to give/take PDF files.My client environment is MAC OS X (from 10.4 to 10.6) and until now only one client (with 2 nics) was connected to that volume: we don't have layer3 switches to do static routes over the two networks, so I decided to use my Ubuntu Server Mac to do this (it's also my new syslog server...).
Nics are configured correctly, and the local share (192.168.0.x) is well seen by everybody.But, when I mount the remote volume (192.9.100.x) to THAT shared folder, nobody is able to connect to the samba share (that now lists the remote volume directory...). The MAC OS X tells "unable to unmount the volume". IP forwarding is also activated on /etc/sysctl.confHere is a part of my smb.conf file
#======================Share Definitions ====================
[TERA]
comment = Tera Condiviso
[code]....
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Aug 10, 2011
I have recently installed Debian on my NAS server. I have also configured Samba for sharing the home directory of a nas user i.e. /home/nas To this directory I have read/write from a windows machine using the nas user credentials.
When I mount my RAID partition /dev/md0p1 to the /home/nas directory, I then realize that all content in this directory (files and subfolders) is only owned by the root user. When trying to access from the windows machine the /home/nas directory, I do not have any write access, only read. I have tried both the nas and the root user credentials.
I have also attempted the change the ownership of the mounted RAID partition to the nas user with the -R recursive option, but I get for the internal files/subfolders an error "operation not supported".
How can I overcome this problem?
- Is there something not done properly in the /dev/md0 array definition (i.e. ARRAY /dev/md0 level=raid1 num-devices=2 UUID=bddf8b69:c97967b5:cb104784:7fef7cc3 )?
- Is there something not done properly in the /dev/md0p1 mounting (i.e. mount /dev/md0p1 /home/nas)?
- Should I do any extra configuration before the mounting etc?
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Sep 3, 2011
I have a few NTFS volumes in my machine. The fstab looks like this:
Code:
/dev/disk/by-id/scsi-SATA_SAMSUNG_HD322GJS2BJJ9EB609339-part3 swap swap defaults 0 0
/dev/disk/by-id/scsi-SATA_SAMSUNG_HD322GJS2BJJ9EB609339-part4 / ext4 acl,user_xattr 1 1
[Code].....
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Feb 1, 2010
I have mounted samba volume and I need to have write permissions for every new folder that's being created (currently, by default, on every newly created folder i have only read and execute permissions).I tried changing umask, but with no effect on mounted folder, umask changed only for local filesystem. I tried mounting with umask option, but with no effect again.I'm using ArchLinux on this machine, and I installed samba using default package manager (pacman).
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Apr 29, 2010
i'm installing a Linux system just simply following guide by fellow friends comunity. Currently, my box are having 2 HDD with 35GB each capacity. Displaying in GNome (36.2 GB Encrypted Data). During installation, I'd selected :
*Remove Linux partitions on selected drives and create default layout
*The "Encrypt system" option
View from terminal :
# /sbin/fdisk -l
Disk /dev/sda: 36.4 GB, 36401315840 bytes
255 heads, 63 sectors/track, 4425 cylinders
[code]....
In Gnome desktop, when I right click and select mount volume, it will display : "Unable to mount location. Internal error: No mount object for mounted volume"
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May 23, 2011
After update 11.2 to 11.4 copy jobs from netware 5.1 volume to local disk linux system does crash after a couple of seconds. I might have to do if there a allot of small files in that job. If happend system reboot is required because unmount netware volume nor delete copied files to the local linux system is not possible. Recompiling ncpfs package not possible because error free source package ncpfs version 2.2.6 might not be availble.
Error message:
May 22 19:31:03 jaci kernel: [ 4694.764721] ------------[ cut here ]------------
May 22 19:31:03 jaci kernel: [ 4694.764730] kernel BUG at /usr/src/packages/BUILD/kernel-desktop-2.6.37.6/linux-2.6.37/include/linux/dcache.h
[code]...
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May 12, 2010
I have some large volumes that I don't want to automatically be e2fsck'd when I reboot the server. Is it safe to change maximum mount count to -1 and check interval to 0 while a volume is mounted, or will that cause problems to the file system?
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Apr 4, 2011
I am unable to hibernate my computer while using Ubuntu and I figured out the reason--Ubuntu is not using my swap partition. I would follow the existing tutorials on setting up a swap partition after installing Ubuntu, but since the volume uses hardware RAID 0, the swap partition is not assigned a /dev/ entry (like /dev/sdxx) and I am not sure how I can mount it.
Here is what I have:
Code:
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Apr 9, 2011
I have a 3ware controller that has a RAID 1 of two SATA disks.After an outage, the linux box (which is running ubuntu), restarted and the partition is now mounted read only. I only have the "/" mount point (this is a test server).Now, if I go to the 3ware controller by pressing ALT-3 while booting, I don't see any indication that there is something wrong with the disks.If I let the computer boot, I'm asked by fdisk if I want to fix/ignore/etc the inconsistencies found.
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Feb 12, 2010
I have a raid 5 array formatted with ntfs; My Ubuntu OS is not able to recognize the raid 5 array but my windows 7 OS can. I had this working before when I installed ubuntu via wubi but now since i installed it as a dual boot OS I am having issues trying to mount this raid 5 volume. So far i have tried reinstalling the dmraid, ntfs config manager, and storage device manager however nothing seems to help me recognize my raid 5 array.
P5N32 E-SLI PLUS MOTHERBOARD: RAID 5 ARRAY NTFS with NVIDIA's raid chipset that comes built in with motherboard.
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Apr 1, 2011
I have a software raid array (in this test case a mirrored set of two 500GB volumes) and I want to move them to another OS installation on the same hardware. (This is testing in preparation for a physical move two arrays onto a single server.) I had the array up and working (surviving reboots), wrote a test backup onto it in a folder.
Shut the machine down, re-installed ubuntu, got it up and running, then installed mdadm, rebooted with the array powered up and ran mdadm --detail --scan , expecting to see mdadm at least find the parts of the array. Instead, I get nothing. I even added -vv to get more verbose output. de nada.
[Code]...
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Jul 7, 2009
I have expanded a HP array by 500GB but am struggling to get Centos (Xenserver installation) to see it.
From the array controller the size of the disk is 1.4TB
Logical Drive: 2
Size: 1.4 TB
Fault Tolerance: RAID 5
Heads: 255
[Code].....
how I get LVM to see the whole disk that is now available (without destoying daya).
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Jul 24, 2010
I've got a file server with two RAID volumes. The one in question is 6 1TB SATA drives in a RAID6 configuration. I recently thought one drive was becoming faulty, so I removed it from the set. After running some stress tests, I determined my underlying problem hadn't cleared up. I added the disk back, which started the resync. Later on, the underlying problem caused another lock up. After a hard-reboot, the array will not start. I'm out of ideas on how to kick this over.
Code:
$ cat /proc/mdstat
Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10]
[code]....
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Jul 10, 2010
After months of using Lenny & Lucid Lynx without issues, I come back to the good existential questions.
I'd like a completely encrypted disk (/ and swap) in addition to the Xp partitions (not that safe but I'll switch completely to Linux once I have solved everything.
1. I create an ext4 partition for /boot
2. One other (/dev/sda7) that I set for encryption,
3. On top of that, I create a PV for lvm2,
4. I add to a VG,
5. I create / & swap in the VG.
However, if I add a hard drive, I will have to encrypt the main partition, add it to the VG & then expand /. So I'll need 2 passwords at boot time to decrypt.
So I'd like to:
-Encrypt the VG directly, it would solve everything but no device file appears for the VG, only the PV and th LV.
-After hours of search, I couldn't find a solution for a single password...
Maybe a hope with a filesystem like btrfs in the future providing encryption, but I'll still have to create a swap partition out of it (or create a file for swap but no hibernation possible).
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Mar 23, 2010
I've been using Fedora and Ubuntu on a standard PC/laptop (one HDD) for some time, but just as a user. Recently I built a PC with Asus P5K WS motherboard with RAID adapter on board. I've got 5 750GB SATA drives, however hardware restrictions only allows me to create Logical Volume up to 2TB. SO I've created RAID 5 on 3 drives as SysVol and RAID0 on 2 drives for data.
Ran live CD and started to install OS. However I get to point, when system scans for storage devices. It detects smaller volume, but not the SysVol, I want to install the system on. It is offering me to install system on the smaller volume. I've deleted the smaller volume and left one RAID 5 volume and 2 drives. Again the same problem. System detects those 2 drives, but not the volume.
Is there any restriction in Fedora 12 allowing installation on certain LV? Or is it more HW problem?
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Jul 1, 2009
I'm experimenting on a new 5.7TB raid we got for one of our servers before it goes into production. I'm carving the space up into Volume Groups and Logical Volumes. Below is some sample output:
[root@server newhome]# vgdisplay
--- Volume group ---
VG Name extraid_sdd1
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 2
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 1
Open LV 1
Max PV 0
Cur PV 1
Act PV 1
VG Size 1.82 TB
PE Size 4.00 MB
Total PE 476804
Alloc PE / Size 476804 / 1.82 TB
Free PE / Size 0 / 0
VG UUID LJPJVE-fekS-crS8-uugk-l13z-0NG0-FWv3M3
--- Volume group --
VG Name extraid_sdb1
System ID
Format lvm2
Metadata Areas 2
Metadata Sequence No 4
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 1
Open LV 1
Max PV 0
Cur PV 2
Act PV 2
VG Size 3.64 TB
PE Size 4.00 MB
Total PE 953608
Alloc PE / Size 953608 / 3.64 TB
Free PE / Size 0 / 0
VG UUID kzlLN4-PyrX-LYUS-h1Tc-1S9F-jVV0-XU5tcK
Because I created this, I know that the second 3.64tb Volume Group, extraid_sdb1, is composed of two physical volumes, /dev/sdb1 and /dev/sdc1, each one 1.82TB in size. My question is, if I hadn't made this and had to work backward, how could I discover that info? I can see that the second VG is composed of 2 PVs by the "Cur PV" line. But if I didn't know that they are my /dev/sdb1 and /dev/sdc1, how could I break that out, as well as their sizes? If it matters, this system is running FC6.
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Dec 22, 2010
I'm asking for an advice about the setup of a large volume: I have 2 disks of 1 Tb each and I want to merge them in a single volume/partition. I am in doubt about setting up a LVM, a RAID0 device or both. I know that RAID0 has no redundancy but I will manage a backup on other media, so that I can take advantage of the stripe feature in terms of I/O performance. On the other hand LVM let me to easily manage and expand the volume in a near future. Am I correct? Anyway I don't know if I can ever setup both and in which order. First LVM then RAID, I suppose.
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Jul 29, 2010
Hi,
I am experiencing problems in creating a physical volume on RAID 1 system.
Here is what I did.
#/usr/sbin/pvcreate /dev/md0
the message reads:
"Device /dev/md0 not found (or ignored by filtering)."
The /dev/md0 has a partition type 8e for linux LVM
Can anyone enlighten me?
Thanks
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Sep 16, 2010
Right now I have a OpenSuSE 11.1 server running on a single hard drive. I want to install the HighPoint RocketRAID 1740 card and utilize RAID 10.I wanted to know if the following process would work ok:
1. Image the current hard drive using clonezilla and remove the drive.
2. Install the RAID card with 4 hard drives of the same make and model as the current drive
3. Create the logical volume
4. Restore the image to that volume
Since I am restoring the image to a RAID volume, is that completely transparent to the OS? Or do I need to do a clean install on that volume and reconfigure everything?
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Apr 8, 2010
I believe server section is the best when speaking of RAID stuff...
I have the following situation:We have a DELL T3400 with embedded fake raid on it. I dont know exactly how the system was setup (I wasnt here at that time), but the RAID was enabled in bios and while booting, the two harddrives would be seen as members of intel raid volume0 (RAID 1 mirror). I am not sure if the software raid was actually properly configured in Linux (Fedora 9) and if the OS was reconstructing the whole raid or it was just the bios part that was mirroring the /boot or just some parts of it. Frankly I find these hydrid raids very confusing.Some bad disk manipulation from my part caused the server to crash, but I was able to recover and boot just with one hard drive after using fsck.
I decided to get rid of the raid as it's not the right solution for the application we need it for and decided to go for a traditional single harddrive system and to use Ghost for Linux to clone to a spare disk when backups are needed.So I installed the latest Fedora 12 distribution onto another harddrive and disabled RAID in bios (changed from RAID ON to autodetect, which is the only other option).
Here is what I have now:
/dev/sda has the newly installed fedora 12
/dev/sdb is an empty harddrive that I would use as an intermediate
/dev/sdc is the old harddrive member of intel raid volume0
sdb was partitioned into sdb1 sdb2 and sdb3 and I created an ext3 filesystem on sdb2. The hard drive belonging to RAID volume0 (sdc) has a lot of work done on it and I would like to be able to recuperate the files to the new disk (sda). I cannot mount that old harddrive while in fedora 12, as it sees some unknown raid member filesystem on it probably assigned by the intel raid chip.
So I decided to do it from the other side: to boot from raid volume 0, and from there mount a third intermediate harddrive (sdb) onto which I would copy the documents and then mount the same harddrive from the newly installed fedora 12 and copy those documents from that intermediate harddrive.I can mount /dev/sdb2 from fedora 12 fine and copy stuff to and from it, but not when I boot from the RAID volume 0 harddrive (sdc) with fedora 9 on it. It keeps saying that the partition in question (/dev/sdb2) is an invalid block device.I am stuck here, as my knowledge in this sort of things is very limited.If somebody can indicate me how to recuperate files from that old raid harddrive onto the new fedora 12 drive, I would appreciate a lot.
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Nov 18, 2010
I have a Truecrypt-encrypted Windows [system] partition, that I want to be opened and mounted automatically (using a keyfile) when I log into Debian, since it is also encrypted and I don't want to type two passphrases. It think this could be done with LUKS. With TC I probably have to go with the CLI, but haven't figured it out yet. And I can't add a keyfile to the volume using the GUI. In order to mount the volume I have to tick the Mount partition using system encryption (preboot authentication) checkbox, or otherwise I get Incorrect password or no TrueCrypt volume found. And same when I try to add a keyfile.
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Jul 2, 2011
Adding a kernel parameter to GRUB_CMDLINE_LINUX_DEFAULT="quiet splash nodmraid" (not 100% it should go there grub2 is new to me, but that is another story) I noticed the following error when running update-grub.
ERROR: ddf1: wrong # of devices in RAID set "ddf1_Series1" [1/2] on /dev/sdb No volume groups found
Now I have not a clue where it is getting ddf1_Series1 from.sdf1 is part of a RAID1 group that has mdadm RAID1 > luks > LVM
md6 : active raid1 sdi1[1] sdf1[0]
1465135936 blocks [2/2] [UU]
bitmap: 0/175 pages [0KB], 4096KB chunk
Errors bug me.. as I am new to grub2 was wondering if anyone has an insight into the error / where to investigate Still reading the grub2 / grub manuals.
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Feb 1, 2011
Could any RAID gurus kindly assist me on the following RAID-5 issue?I have an mdadm-created RAID5 array consisting of 4 discs. One of the discs was dropping out, so I decided to replace it. Somehow, this went terribly wrong and I succeeded in marking two of the drives as faulty, and the re-adding them as spare.
Now the array is (logically) no longer able to start:
mdadm: Not enough devices to start the array.Degraded and can't create RAID ,auto stop RAID [md1]
I was able to examine the disks though:
Code:
root@127.0.0.1:/etc# mdadm --examine /dev/sdb2
/dev/sdb2:
Magic : a92b4efc
Version : 00.90.00
code....
Code:
mdadm --create --assume-clean --level=5 --raid-devices=4 /dev/sda2 /dev/sdb2 /dev/sdc2 /dev/sdd2
As I don't want to ruin the maybe small chance I have left to rescue my data, I would like to hear the input of this wise community.
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