Server :: MD RAID5 Hangs On Directory Creation
Mar 26, 2010
So here it is, I have a fileserver setup on Ubuntu Server 9.10 AMD64. In this system is 4 1.5TB SATAII drives. They are configured in RAID5 using MD. Now everything is working beautify, except when you need to create a directory. When you do, the system hangs for about 30 seconds. The I/O wait in top jumps up as well. Then the directory is created and everything works once again.
The odd part is it is only Directory creation that does this. I can copy, move, download and stream files off the server perfectly. I am baffeled as to what is causing it. It might be related to the fact that I expanded the array from 3 to 4 drives, it was after that, that I first noticed the problem.
View 2 Replies
ADVERTISEMENT
Jul 20, 2010
I've got a new Ubuntu 10.04 server install with a new 3 disk RAID 5. The boot disk is separate, not part of the RAID. I was trying to practice what I would do if a disk died to recover the RAID, so I unplugged one of the three disks. The machine now just hangs on startup. It shows fsck at the top of the screen but doesn't got anywhere from there. If you press a key it shows the Ubuntu splash screen. If I plug the disk back in, everything boots up normally. So, my question is, how do I get the machine to boot with one of the RAID members missing? I know I can recover it using the Live CD, but it would be nice to be able to get back into the machine without the CD.
View 9 Replies
View Related
Jan 9, 2010
I have no drive failures but just need to recreate a raid5 set as the next free MD disk number. Originally I built a temp OS of debian on a single drive and had 4x2TB drives in a raid5 software array (MD0) this worked fine and allowed me to move all data to it, and remove our old fileserver. I have now pulled out the 4 x 2TB Raid 5 drives and created a new OS on two new 80GB drives, partioned as follows,
MD0 is now 250mb Raid1 as /boot
MD1 is 4GB Raid1 Swap
MD2 is 76GB Raid1 as /
If I turn off and push back in the 4x2TB drives I cannot see a MD3. I presume I would need to create a MD3 from these 4 drives but I dont want to mess things up as its live data. So im here asking for help, or a bit of hand holding to get it done right.
PS - Its a Debian Lenny 5.0.3 Raid1 fresh install replacing a Debian Lenny 5.0.3 on a single disk.
View 2 Replies
View Related
Jun 14, 2010
I have an application that creates temp files and quickly deletes them. But I'd like to keep those files, is there a way to do that in Linux?
View 2 Replies
View Related
Jan 8, 2011
When I am creating a user (say sandy) on my FC14 system, I find that the default permissions for her home directory (/home/sandy) are 700.Can I somehow set up my system so that these permissions are 711 in place of 700.
View 3 Replies
View Related
Nov 17, 2010
I've been running 10.04 since September on my new MSi i3 notebook and about two weeks ago I noticed that when I login after system boot, propagation of icons on my desktop and the content of my Panel have become slower and slower.If I logout and login again the propagations are not slow.
View 1 Replies
View Related
Jun 14, 2011
I cant seem to get my RAID 5 (consisting of 8 1tb hard drives) assembled for some reason and I have no idea why and cant find any solutions online. Ill go ahead and show what my problem is:
here is all my hard drives:
Code:
server:~$ sudo fdisk -l
Disk /dev/sda: 10.2 GB, 10242892800 bytes
255 heads, 63 sectors/track, 1245 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x0004f041
[Code]....
So as you can see the array for those last four look fine however for the first four it marks the last four drives as faulty for some reason. I am kind of clueless to do from this point on honestly, I have data on this array that I'd really like to save.
View 3 Replies
View Related
Oct 29, 2010
I've had software RAID 5 arrays for a while now, so they were set up before a RAID array could be partitioned. I had two separate RAID 5 arrays on the same set of drives. One was for / and the other for /home. I moved the / to an SSD and figured I'd expand the other RAID array by failing a drive, repartitioning it then adding it back in. After repeating for the remaining drives, I could then expand the RAID array to use the full size of the drives.
Partway through the second drive being added back in, the RAID array stopped with a kernel error. The drive I was adding and another drive both showed as failed. I couldn't restart the array so I copied the failed drive (Seagate's SeaTools did show it as faulty, but without SMART being tripped) to a new one and tried again. dd_rescue reported the drive copied correctly but I still couldn't restart the array.
So I tried the old standby of recreating the array. This allows me to start it but the ext3 file system won't mount. So I then tried my script (listed in another thread) to try every combination of drives to assemble the array and mount the file system. Still no luck.
View 2 Replies
View Related
Jun 8, 2010
I broke down and spent some $$ on a new server for home use. I mostly do technical research and testing, plus store movies and music. My interests are mainly in the IET iscsitarget performance.
Server system consists of an AMD Phenom II 550, 8GB RAM, 1x 80GB system partition, and a LVM-vg0 software raid5, running Ubuntu 10.04 server x64.
The vg0 consists of 3 x 500GB 7200RPM SATA drives (mdadm) sliced up with 100GB for VBox VMs, one slice is an iscsitarget for a Windows 2k3 server, and another slice iscsitarget for a desktop.
With this setup, the win2k3 server is booted from a .vdi image stored on the ext4 lvm raid5 vg0. Here are the DiskTT stats.
Code:
However, with the Win2k3 server and the MS iscsi initiator I get using DiskTT:
Code:
The speeds are incredibly slow considering a non iscsi connection is screaming fast in comparison. Any ideas?
All nics are 1GB.
Here is my ietd.conf
Code:
View 1 Replies
View Related
Mar 10, 2010
For the troubleshooting of one server (having 73Gb 3HDD, Raid5 of 140Gb). When I check in the Array The Logical Vol Appears as One HDD not Online
0 HDD1
1 HDD2
2 HDD3
0 HDD not showing Online, When we set it for Oneline & save, After restarting it will go off.
View 1 Replies
View Related
Aug 11, 2010
how to recover A mounted RAID5 data???
View 5 Replies
View Related
Jun 30, 2011
I know you can fail and then remove a drive from a RAID5 array. This leaves the array in a degraded state.
How can you remove a drive and convert the array to just a regular, clean array?
View 9 Replies
View Related
Jan 17, 2011
How to configure Samaba Server on CentOS 5.5 and how to synchronize with my Windows Server-2003.
View 2 Replies
View Related
Sep 25, 2010
What I am trying to to is set up a cluster as follows:
- There are four nodes
- Nodes three and four have large amounts of storage that will be used for storing user data.
- Nodes one and two will be running a couple of network services.
I'd like have nodes one and two to have a clustered filesystem just between them to store data for the services run only by them.is it possible to share one filesystem between two nodes and another filesystem between two other nodes? The cluster seems to try to make the storage changes across all nodes. They will not be able to spend the extra money to get the same storage in all four nodes. Here is what I have done. I am using CentOS 5.5. After installing CentOS, I did this:
On all nodes:
Code:
[root@node1 ~]# yum groupinstall "Clustering"
[root@node1 ~]# yum groupinstall "Cluster Storage"
[root@node1 ~]# chkconfig ricci on
[code].....
...which I think makes sense because the cluster was supposed to create the PV and the volume group, but did not. I don't even think it tries. The first time it tries to do anything to another node is when I create a logical volume.
View 1 Replies
View Related
Mar 25, 2010
I started to use mailboxes instead of maildirs on my server. My server is with imapd on slackware.I found out that by Thunderbird I just cannot create sub-folders in my imap directory. My users used to manage their mails into hierarchically organized subfolders.
View 3 Replies
View Related
Aug 3, 2011
create the menu and submenu in isolinux.cfgWe do have a lot sites,ach sites using different Linux OS customization. So i need to create menu and submenu to select the appropriate OS image for the respective sites to do the installation through kickstart
View 1 Replies
View Related
Dec 5, 2010
I'm a light linux user over the last couple of years and I decided to built a HTPC/NAS device.
Setup:
40gb ide -> usb boot drive
3x2tb sata (4k Sector) drives
I've got another 2tb identical drive but it's holding data that is going to be copied to the raid after it's up and running and then be 'grown' into the raid array to yield a final 5+tb array. I tried doing a disk util raid array and it ended up failing after reboot due to it using the /dev/sd* designations and they swapped. I have no idea how to do the UUID version, my googlefu and practical guide to ubuntu. So I decided to do it manually in order to also fix the sector issue as disk util wasn't formatting them correctly and once formatted wouldn't let me create a raid array from the discs.
[Code]....
View 9 Replies
View Related
Jun 8, 2010
I have a 2-quad core Intel Xeon system that I have set to RAID-5. I then attempted to install Ubuntu Server. When the message came up about enabling SATA RAID, I said NO because I have hardware RAID installed on the box. So I completed the install, and when I go to view the RAID configuration using the Intel Matrix Storage Manager during boot, it says:Volume0, Level: RAID5(Parity), Status: DegradedWhen I install enabling SATA RAID, I get a message asking me to "configure iSCSI volumes". When I click on that, I get another message: Loginto iSCSI targets. When I click on that I get another message: "Enter an IP address to scan for iSCSI targets". I have no idea what to put as thye iSCSI target portal address!
View 5 Replies
View Related
Oct 6, 2009
is there a way to set-up a file system, where you have multiple nodes (PC's) linked to one storage pool? ZFS seems to support this idea with multiple disks on one node, but could you connect multiple nodes in this manner?
View 3 Replies
View Related
Jun 17, 2011
I am currently looking for a file system that needs to be distributed over several nodes and need redundancy, like RAID5, and the ability to grow if needed, like LVM. Also not all nodes are going to be located in the same data center, but I guess that's not that important as long as the connection between DCs is sufficiently fast. I am currently looking at AFS, Coda, GFS and OCFS to see if they have what I need.
Edit: I just figured that it may be better to have the RAID5-like setup within one location, and have RAID1-like mirroring between the locations. That would probably better for performance, right?
View 2 Replies
View Related
Mar 23, 2010
I am setting up a new server and am in the midst of testing RAID. This is an Ubuntu 9.10 server. RAID1 (/dev/md1) is spread across 12 one-terabyte SCSI disks (/dev/sdi through /dev/sdt). It has four spares configured, each of which are also one-terabyte SCSI drives (/dev/sdu through /dev/sdx). I have been following the instructions on the Linux RAID Wiki ([URL]....
I have already tested the RAID successfully by using mdadm to set a drive faulty. Automatic failover to spare and reconstruction worked like a champ. I am now testing "Force fail by hardware". Specifically, I am following the advice, "Take the system down, unplug the disk, and boot it up again." Well, I did that, and the RAID fails to start. It outright refuses to start. It doesn't seem to notice that a drive is missing. Notably, all the drive letters shift up to fill in the space left by removing a drive. The test I did was to:
[code]....
Is removing a disk from the bus a reasonable test in the first place? Meaning, is this likely to happen in a production environment by other means than a human coming by and yanking out the drive? Meaning, is there a hardware failure that would replicate this event? Because, if so, then I don't know how to recover from it.
View 1 Replies
View Related
Jul 5, 2011
I have an Acer Altos EasyStore SATA NAS box that hung, the only way to reboot was to crash the system (unplug it). Upon reboot it was not recognising the hard drives (it wanted to do a destructive reinitialize). Most of the importent data was backed up, however some was overlooked and we'd quite like to get it back. Removing the disks and placing them in a PC with enough SATA bays to cope, and booting with a live linux distribution (System Rescue CD) I can see the 4 drives are not suffering hardware error and that the original partions exist. Using mdadm I can assemble the Arrays without error (seems to be three but the only one I am concerned with is the RAID5 array of about 3TB). /dev/m1p2 mounts as a loopdevice once an offset is entered. In turn this mounts as an XFS parition. However despite df showing the partition almost to be full. ls -l or ls -a on the mount point shows it to be empty!
I got thusfar using a translation from a German language forum, unfortunately I only speak a little German, and the only other English language post on a simlilar matter I found within that site had no replies. The next step was to unmount loop, then run xfs_chack and xfs_repair on the file system. xfs_check returns that there is are a few dir size and offset errors along with link count mismatches. This I would presume normal for a file system that has become slightly corrupted. xfs_repair (version 3.0.3) gets as far as Phase 3 it finds and corrects zerolength entries, offsets on directories and bogus inode numbers. However the final two lines are:
Code:
realloc failed in blkent_append (2671166480 bytes)
zsh: segmentation fault xfs_repair /dev/loop1
A search on the error missing out data size just returns code to generate it, is anybody able to explain what it means? Also remounting hard drive, ls and varients of still do not return anything. Am I missing some thing (root I am logged in with now would have different credentials presumably to root on the NAS box, so how do I get around this)?
View 5 Replies
View Related
Jun 7, 2011
I recently upgraded a server from Fedora 6 to Fedora 14. In addition to the main hard drive where the OS is installed, I have 3 1TB hard drives configured for RAID5 (via software). After the upgrade, I noticed one of the hard drives had been removed from the raid array. I tried to add it back with mdadm --add, but it just put it in as a spare. I figured I'd get back to it later.Then, when performing a reboot, the system could not mount the raid array at all. I removed it from the fstab so I could boot the system, and now I'm trying to get the raid array back up.
I ran the following:mdadm --create /dev/md0 --assume-clean --level=5 --chunk=64 --raid-devices=3 missing /dev/sdc1 /dev/sdd1I know my chunk size is 64k, and "missing" is for the drive that got kicked out of the array (/dev/sdb1).That seemed to work, and mdadm reports that the array is running "clean, degraded" with the missing drive.However, I can't mount the raid array. When I try:mount -t ext3 /dev/md0 /mnt/fooI get:
mount: wrong fs type, bad option, bad superblock on /dev/md0,
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
[code]....
View 1 Replies
View Related
Oct 19, 2010
I have a directory that has a large number of files, around 1.5 million at this point. If I go to the directory and type in "ls filename" for a filename that I know exists, ls just hangs. I have let it run for over 20 minutes and it never does anything. Up until yesterday the directory was working fine through samba serving up files, but now it doesn't return anything. How to proceed from here?
View 7 Replies
View Related
May 20, 2010
bonjour;
voici mon probleme, j un serveur ftp sous redhat, comment faire pour creer les utilisateurs, (mais pas des utilisateurs locaux), c-a-d, les utilisateurs peuvent acceder au serveur ftp distant partir du client ftp (dans une autre machine), par mot de passe et identifiant.
merci de me donner la rponse si c possible dtaille.
merci beaucoup.
View 2 Replies
View Related
Dec 18, 2010
I have a server with Fedora 13 with which I would like to get NFS working. I have looked up multiple howto's and tutorials, but I'm having a problem not addressed by any of them.Official how-to, another how-to, and another how-to.I have verified that nfs-utils, nfs-utils-lib, portmap, and system-config-nfs are installed and running. I have verified that I have, in fact, shared the directory that I want to share, and that the proper permissions are set.
I had to go through some gyrations to get the Belkin wireless N router to allow my server to have a static IP. However, I can ping the server from the nfs client (a toshiba satellite running mint 8), and vice versa. I have (for now) disabled firewalls on both computers. I think I have disabled SELinux on Fedora 13 (for now).When I attempt to connect to the server from the client, the output looks like this:Quote:
aragorn ~ # mount -v 192.168.2.101:/test /home/kelev/test/
mount: no type was given - I'll assume nfs because of the colon
mount.nfs: timeout set for Sat Dec 18 12:21:09 2010
[code]....
View 7 Replies
View Related
Jul 14, 2010
How to change the password of Directory Manager in RED HAT Directory Services through a ldapclient through command line or graphical.
View 1 Replies
View Related
Feb 14, 2010
I have a rack of four 1TB drives all partitioned identically with three primary partitions. On each drive
- the first partition is only 64MB;
- the second is a large 900GB partition and
- the last holds all the remaining space
mdadm has been used to set up
/dev/md0 - RAID1, comprised of /dev/sda1 and /dev/sdb1
/dev/md1 - RAID5, comprised of /dev/sda2, /dev/sdb2, /dev/sdc2, /dev/sdd2
/dev/md2 - RAID5, comprised of /dev/sda3, /dev/sdb3, /dev/sdc3, /dev/sdd3
OK, so it was a silly mistake to make - but I am now need to increase the size of /dev/md0. My thinking is to reduce the size of md1 so that I can grow md0.
On md1 I have two logical volumes. I've successfully reduced the size of the volume so that I can reduce the size of md1. Now I'm at the nervous stage; I can find little written on the topic of shrinking RAID5 arrays - and even if I do this I'm unsure if I can move partitions around to regain the space I so desire.
View 1 Replies
View Related
May 18, 2010
I've got a server that needs more space. To achieve this we added space (by extending the VMware disk attached to it).Normally this isn't an issue, because we just add an new partition and LVM it from there, but this host predates our deployment of LVM everywhere.
Our current theory is that the unallocated sectors can not be assigned because they aren't part of the extended partition, and thus ... we go in a circle.So what i believe the way forward is to extend sda4 so that i can then create an sda10 inside of it. Anyone have any ideas on how to do this? I was thinking gparted may do the trick ... but being a server i'm in runlevel3, with no X...
View 5 Replies
View Related
Apr 4, 2010
I m having a RHEL-5 sever.ABC directory size is 57GB after taking backup in the same disk with name ABC.bkp showing 56GB. i used below command to copy/backup. # cp -r ABC ABC.bkp (different sizes after copying)..I checked both the directory sizes by #du -sh <ABC> and du -ks <ABC.bkp>In both GB and KB there is lots of difference (200mb). why this will happen in copying? what is the solution for above question? what is the correct way of copying 1dir to newdir exactly?
View 4 Replies
View Related
