Discuss

discuss@lists.centos.org

34753 discussions

NFS and inode64
by m.roth＠5-cent.us 02 Mar '15

02 Mar '15

Well, we got it working. However, the issue we're now worried about is users creating files and subdirectories. Do we need to worry, and if so, is there some way to reserve inodes < 32k table, other than creating tens of thousands of dummy files now? We don't want, a year or two down the road, for this system to be running, and suddenly everything's broken, because all lower inodes have been used.

2 2

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

8 31

Re: [CentOS] installing C7 on a laptop with Win7, dual boot
by Richard 02 Mar '15

02 Mar '15

------------ Original Message ------------ > Date: Sunday, March 01, 2015 20:06:26 -0500 > From: Fred Smith <fredex(a)fcshome.stoneham.ma.us> > To: centos(a)centos.org > Subject: [CentOS] installing C7 on a laptop with Win7, dual boot > > Hi all! > > I've just installed C7 on my netbook that already contained Win7 > (and also Fedora 19, which the C7 is intended to replace). The > Fedora installer had found the windows installation and it > appeared in the grub menu, and was bootable and worked fine. > > The C7 installer did not put the windows installation into the grub > menu. > > with some googling I found a page at > https://priteshugrankar.wordpress.com/2014/09/12/dual-booting-cent > os-7-and-windows-7/ that gives a simple recipe for fixing this > problem. basically: > > cp /boot/grub2/grub.cfg orig.grub.cfg > grub2-mkconfig -o /boot/grub2/grub.cfg > > with (on his system) the second command above producing this > output: > > [root@localhost ~]# grub2-mkconfig -o /boot/grub2/grub.cfg > Generating grub configuration file ... > Found linux image: /boot/vmlinuz-3.16.2-1.el7.elrepo.x86_64 > Found initrd image: /boot/initramfs-3.16.2-1.el7.elrepo.x86_64.img > Found linux image: /boot/vmlinuz-3.10.0-123.el7.x86_64 > Found initrd image: /boot/initramfs-3.10.0-123.el7.x86_64.img > Found linux image: /boot/vmlinuz-3.10.0-123.6.3.el7.x86_64 > Found initrd image: /boot/initramfs-3.10.0-123.6.3.el7.x86_64.img > Found linux image: > /boot/vmlinuz-0-rescue-327fe33f3b364802871211321a2790b7 Found > initrd image: > /boot/initramfs-0-rescue-327fe33f3b364802871211321a2790b7.img > Found Windows 7 (loader) on /dev/sda1 > Found Windows 7 (loader) on /dev/sda2 > done > > Unfortunately, when I did it, I got this: > > Generating grub configuration file ... > Found linux image: /boot/vmlinuz-3.10.0-123.el7.x86_64 > Found initrd image: /boot/initramfs-3.10.0-123.el7.x86_64.img > Found linux image: /boot/vmlinuz-3.10.0-123.20.1.el7.x86_64 > Found initrd image: /boot/initramfs-3.10.0-123.20.1.el7.x86_64.img > Found linux image: > /boot/vmlinuz-0-rescue-c875112952114f6284f69abaa4f9a2f7 Found > initrd image: > /boot/initramfs-0-rescue-c875112952114f6284f69abaa4f9a2f7.img done > > No mention of the windows installation. > > It's not that I use the win7 installation much, but I do want to > be able to do so when one of those rare occasions pops up. > > Thanks in advance! > > Fred I too encountered this issue putting centos7 on a win7 machine. The solution is to: edit: /etc/grub.d/40_custom putting in: menuentry 'name' { insmod ntfs set root=(hd0,2) chainloader +1 } note: "name" can be anything you want (within reason), and is the name that will show in the boot menu. the values here: root=(hd0,2) will vary based on your disk setup. if you still have your fc19 grub/grub2 (whichever it used) configuration file you should be able to confirm the values from that. when done, then: grub2-mkconfig -o <output file> personally, i didn't set the -o to the production grub.cfg file as my preference is to make backups and check things before potentially trashing a file like that, but do as you wish. when you're comfortable with the generated file move it to the production location and reboot. - Richard

2 1

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/ ****

5 12

Re: [CentOS] mdraid vs hardware raid, was: Looking for a life-save LVM Guru
by Chris Murphy 01 Mar '15

01 Mar '15

On Sat, Feb 28, 2015 at 5:14 PM, Chris Murphy <lists(a)colorremedies.com> wrote: > "Drives, and hardware RAID cards are subject to firmware bugs, just as > we have software bugs in the kernel." makes no assessment of how > common such bugs are relative to each other. I don't want to underestimate the value of good hardware RAID with BBWC implementations when it comes to avoiding problems that aren't bugs, but are "just the way things are." For example unclean shutdowns, and especially unclean shutdowns along with a device failure. There's a metric ton of really useful information in the man 4 md page that most people probably aren't aware of because they usually read the mdadm page. http://linux.die.net/man/4/md Relevant in this case is the Unclean Shutdown section. It's completely rational for people to think, hmmm, maybe I'd rather get a hardware RAID card that supports BBWC to avoid some of these problems? Plus then you get to use no barriers, resyncs and degraded operation can have much lower performance penalty, etc. -- Chris Murphy

1 0

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

3 3

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

2 3

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.

4 7

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.]

3 6

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

5 6

Jump to page:

2026

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

2005

2004

Discuss