Discuss February 2015

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153 participants
158 discussions

disk space trouble on ec2 instance
by Tim Dunphy 03 Mar '15

03 Mar '15

Hey all, Ok, so I've been having some trouble for a while with an EC2 instance running CentOS 5.11 with a disk volume reporting 100% usage. Root is on an EBS volume. So I've tried the whole 'du -sk | sort -nr | head -10' routine all around this volume getting rid of files. At first I was getting rid of about 50MB of files. Yet the volume remains at 100% capacity. Thinking that maybe the OS was just not letting go of the inodes for the files on the disk, I attempted rebooting the instance. After logging in again I did a df -h / on the root volume. And look! Still at 100% capcity used. Grrr.... Ok so I then did a du -h on the /var/www directory, which was mounted on the root volume. And saw that it was gobbling up 190MB of disk space. So then I reasoned that I could create an EBS volume, rsync the data there, blow away the contents of /var/www/* and then mount the EBS volume on the /var/www directory. So I went through that exercise and lo and behold. Still at 100% capacity. Rebooted the instance again. Logged in and.. still at 100% capacity. Here's how the volumes are looking now. [root@ops:~] #df -h Filesystem Size Used Avail Use% Mounted on /dev/sda1 9.9G 9.3G 49M 100% / none 312M 0 312M 0% /dev/shm /dev/sdi 148G 116G 25G 83% /backup/tapes /dev/sdh 9.9G 385M 9.0G 5% /backup/tapes/bacula-restores /dev/sdf 9.9G 2.1G 7.4G 22% /var/lib/mysql fuse 256T 0 256T 0% /backup/mysql fuse 256T 0 256T 0% /backup/svn /dev/sdg 197G 377M 187G 1% /var/www There are some really important functions I need this volume to perform that it simply can't because the root volume is at 100% capacity. Like the fact that neither mysql nor my backup program - bacula will even think of starting up and functioning! I'm at a loss to explain how I can delete 190MB worth of data, reboot the instance and still be at 100% usage. I'm at my wits end over this. Can someone please offer some advice on how to solve this problem? Thanks Tim -- GPG me!! gpg --keyserver pool.sks-keyservers.net --recv-keys F186197B

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Looking for a life-save LVM Guru
by Khemara Lyn 02 Mar '15

02 Mar '15

Dear All, I am in desperate need for LVM data rescue for my server. I have an VG call vg_hosting consisting of 4 PVs each contained in a separate hard drive (/dev/sda1, /dev/sdb1, /dev/sdc1, and /dev/sdd1). And this LV: lv_home was created to use all the space of the 4 PVs. Right now, the third hard drive is damaged; and therefore the third PV (/dev/sdc1) cannot be accessed anymore. I would like to recover whatever left in the other 3 PVs (/dev/sda1, /dev/sdb1, and /dev/sdd1). I have tried with the following: 1. Removing the broken PV: # vgreduce --force vg_hosting /dev/sdc1 Physical volume "/dev/sdc1" still in use # pvmove /dev/sdc1 No extents available for allocation 2. Replacing the broken PV: I was able to create a new PV and restore the VG Config/meta data: # pvcreate --restorefile ... --uuid ... /dev/sdc1 # vgcfgrestore --file ... vg_hosting However, vgchange would give this error: # vgchange -a y device-mapper: resume ioctl on failed: Invalid argument Unable to resume vg_hosting-lv_home (253:4) 0 logical volume(s) in volume group "vg_hosting" now active Could someone help me please??? I'm in dire need for help to save the data, at least some of it if possible. Regards, Khem

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scp -rp behavior
by Mark LaPierre 02 Mar '15

02 Mar '15

Hey all, I'm trying to copy configuration files from my old CentOS 6.6 32 bit machine to my new CentOS 6.6 64 bit machine. On my 32 bit machine: [mlapier@mushroom ~]$ ifconfig eth0 Link encap:Ethernet HWaddr 00:19:DB:E5:4E:9F inet addr:192.168.15.105 When I issue this command on my new 64 bit machine, 192.168.15.101: scp -pr mlapier(a)192.168.15.105: /home/mlapier/.thunderbird /home/mlapier/.thunderbird It copies all directories and files in 192.168.15.105: /home/mlapier/ to 192.168.15.101: /home/mlapier. I don't want all that, I just want the .thunderbird folder and all it's contents. The user and group account numbers match on the two machines for this user so that's not the issue. When I RTFM this is what I thought it said to do. I'm I misreading the FM or is something weird going on here? -- _ °v° /(_)\ ^ ^ Mark LaPierre Registered Linux user No #267004 https://linuxcounter.net/ ****

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Cyrus 2.4 and Centos6
by Timothy Kesten 28 Feb '15

28 Feb '15

Hi Folks, I'd like to install cyrus-imapd 2.4 in CentOS6. Found rpm cyrus 2.4 for CentOS6 on rpmseek. cyrus-imapd-2.4.17-30.1.x86_64.rpm But there are conflicts with postfix 2.6.6. Can I ignore this conflicts or is there a suitable version of ppstfix available? Thx Timothy

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Odd nfs mount problem
by m.roth＠5-cent.us 28 Feb '15

28 Feb '15

I'm exporting a directory, firewall's open on both machines (one CentOS 6.6, the other RHEL 6.6), it automounts on the exporting machine, but the other server, not so much. ls /mountpoint/directory eventually times out (directory being the NFS mount). mount -t nfs server:/location/being/exported /mnt works... but an immediate ls /mnt gives me stale file handle. The twist on this: the directory being exported is on an xfs filesystem... one that's 33TB (it's an external RAID 6 appliance). Any ideas? mark

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OT: AF 4k sector drives with 512 emulation
by Robert Arkiletian 28 Feb '15

28 Feb '15

Still have good quality older sata hardware raid cards that require 512 bytes/sector. As far as I know HD manufacturers are not making native 512 bytes/sector drives any more. Some have better 512e emulation than others. Looking for some advice on which to avoid and which are recommended. Thanks. PS this is for a CentOS6 server.

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yum causing RPC timed out?
by Dave Burns 28 Feb '15

28 Feb '15

I just installed centos 7, yum is acting strange, experiencing RPC time-outs. Sometimes when I disable the additional repos (epel and rpmforge) it seems to make things act normal. But not this time (see below). Could I have some misconfiguration? Network glitch? What hypotheses should I be considering? Thanks, Dave [root@localhost ~]# yum repolist repo id repo name status base/7/x86_64 CentOS-7 - Base 8,465 epel/x86_64 Extra Packages for Enterprise Linux 7 - x86_64 7,312 extras/7/x86_64 CentOS-7 - Extras 104 rpmforge RHEL 7 - RPMforge.net - dag 245 updates/7/x86_64 CentOS-7 - Updates 1,721 repolist: 17,847 [root@localhost ~]# yum --disablerepo=epel --disablerepo=rpmforge provides '*/applydeltarpm' do_ypcall: clnt_call: RPC: Timed out do_ypcall: clnt_call: RPC: Timed out http://centos.corenetworks.net/7.0.1406/os/x86_64/repodata/3cda64d1c161dd0f…: [Errno 12] Timeout on http://centos.corenetworks.net/7.0.1406/os/x86_64/repodata/3cda64d1c161dd0f…: (28, 'Resolving timed out after 30385 milliseconds') Trying other mirror. do_ypcall: clnt_call: RPC: Timed out [etc. etc.]

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Package group "X Window System" has disappeared
by Niki Kovacs 27 Feb '15

27 Feb '15

Hi, Until last week, I could install a CentOS 7 based desktop using the following approach: 1. Install minimal system. 2. yum groupinstall "X Window System" 3. yum install gdm gnome-classic-session gnome-terminal liberation-fonts 4. Install applications as needed. This morning, the package group "X Window System" seems to have disappeared. This is embarrassing. What happened? Niki -- Microlinux - Solutions informatiques 100% Linux et logiciels libres 7, place de l'église - 30730 Montpezat Web : http://www.microlinux.fr Mail : info(a)microlinux.fr Tél. : 04 66 63 10 32

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CentOS 7 hand-edit the network configuration files
by Helmut Drodofsky 27 Feb '15

27 Feb '15

Helo, on http://wiki.centos.org/FAQ/CentOS7 in 3. And what if I want the old naming back? is written: /etc/udev/rules.d/60-net.rules seems necessary to override /usr/lib/udev/rules.d/60-net.rules According to my experience, the text should be changed to: /etc/udev/rules.d/70-persistent-net.rules has to describe the naming rule according to this example: SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:00:00:00:00:00", ATTR{type}=="1", KERNEL=="eth0", NAME="eth0" where ATTR{adress} is the HWADDR of the network interface. Static assignment: GATEWAY has to be configured in /etc/sysconfig/network -- Viele Grüße Helmut Drodofsky Internet XS Service GmbH Heßbrühlstraße 15 70565 Stuttgart Geschäftsführung Dr.-Ing. Roswitha Hahn-Drodofsky HRB 21091 Stuttgart USt.ID: DE190582774 Tel. 0711 781941 0 Fax: 0711 781941 79 Mail: info(a)internet-xs.de www.internet-xs.de

1 0

repositories
by Pol Hallen 27 Feb '15

27 Feb '15

Hi all :-) This is my first post: I'm coming from debian/bsd world. A question about repositories: minimal installation (version 7) provides: CentOS-Base.repo CentOS-CR.repo CentOS-Debuginfo.repo CentOS-fasttrack.repo CentOS-Sources.repo CentOS-Vault.repo I known there are others repositories as: RPMForge, EPEL, REMI, ATrpms, Webtatic (and maybe also others) so, what kind of these repositories are? Does they repositories substitute packages from main? Or only adding new packages? thanks for advices and help! Pol

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Discuss February 2015