Discuss December 2010

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278 participants
227 discussions

2.6.18-194.26.1.el5 NFS4 race conditions?
by Gerhard Schneider 06 Dec '10

06 Dec '10

Are there any known race conditions with 2.6.18-194.26.1.el5 x86_64 and NFS4? Today a user managed to shut down two identical Intel servers by copying a simple text file via NFS4. Reverting back to 17.1 made the error disappear. On other non-identical hardware the error was not reproducible (so it must be a combination of hardware and this special kernel revision). Anybody interested in a kernel dump? It's only 16GB. I could install kernel-debuginfo and try to get something out of the dump.. Gerhard Schneider -- Gerhard Schneider e-Mail:gs@ilsb.tuwien.ac.at Institute of Lightweight Design and Tel.: +43 664 60 588 3171 Structural Biomechanics (E317) Fax.: +43 1 58801 31799 Vienna University of Technology / Austria DVR: 0005886 A-1040 Wien, Gusshausstrasse 27-29 http://www.ilsb.tuwien.ac.at/

1 0

Centos DS and user password change
by Stanislav Vlasov 06 Dec '10

06 Dec '10

[stas@ds ~]$ cat /etc/redhat-release CentOS release 5.5 (Final) [stas@ds ~]$ rpm -qa | grep centos-ds centos-ds-admin-8.1.0-9.el5.centos.1 centos-ds-8.1.0-1.el5.centos.2 centos-ds-base-8.1.0-0.14.el5.centos.2 centos-ds-console-8.1.0-5.el5.centos.2 ds installed for: 1) linux workstations authentication 2) mail (accounts & aliases) 3) samba 4) squid acls Exists several r/o replicas. All services and workstations work with replica, not with main server. Now i need some interface for change user's own password by user. Password change must be on main server. I try login by user to main server, and i can't change own password. Added that ACL (via centos-idm-console): (targetattr = "userPassword") (version 3.0; acl "ChangePass"; allow (write) (userdn = "ldap:///self") and (dns="*.neyvabank.ru") ;) No effect. How i can give rights to users for change passwords? -- Stanislav

2 1

DVD drive ownership/permissions group ownership = mail?
by Dave 06 Dec '10

06 Dec '10

I can change the group ownershipp of the DVD drive, but if I log out & in again it changes back. Is there a way to make a change permanent? How could I figure out what process is changing this back? ls -la /dev/scd0 brw-rw---- 1 root mail 11, 0 Nov 12 15:17 /dev/scd0 mahalo, Dave

3 2

networking printer
by ann kok 06 Dec '10

06 Dec '10

Hi all I would like to ask linux can do the networking printer as window Share it to office environment If yes, any brand name and concern Any documentation also Thank you so much

6 5

Yum Updates dependencies missing (rpmforge)
by Lanny Marcus 06 Dec '10

06 Dec '10

There are updates available, for the below multimedia packages (CentOS 5.5, 32 bit), but I'm getting missing dependency errors from yum update for these. ---> Package directfb.i386 0:1.2.10-1.el5.rf set to be updated ---> Package ffmpeg.i386 0:0.6.1-1.el5.rf set to be updated ---> Package ffmpeg-libpostproc.i386 0:0.6.1-1.el5.rf set to be updated ---> Package gstreamer-plugins-ugly.i386 0:0.10.11-2.el5.rf set to be updated ---> Package kino.i386 0:1.3.4-1.el5.rf set to be updated ---> Package libquicktime.i386 0:1.2.1-1.el5.rf set to be updated ---> Package lzo.i386 0:2.04-1.el5.rf set to be updated ---> Package mplayer.i386 0:1.0-0.44.svn20100703.el5.rf set to be updated Probably anyone wanting to update the above packages should wait a day or two and hopefully the dependencies will become available. Lanny http://www.magazines-magazine.com/

5 4

Any chance to get a working, current openldap srpm/rpm for centos 5.5
by Götz Reinicke - IT-Koordinator 06 Dec '10

06 Dec '10

Hello, is there anyone out there, who has a current 2.4.23 srpm or good how to compile it from src with supported db4? I tried to compile recent source files, but always finding the current (installed) db4 >4.3 fails. Than I tried to compile the LTB Project Files: http://ltb-project.org/wiki/documentation/openldap-rpm May be it is just a small step or option to be set. Would be nice to get it working :-) Thanks and best regards Götz -- Götz Reinicke IT-Koordinator Tel. +49 7141 969 420 Fax +49 7141 969 55 420 E-Mail goetz.reinicke(a)filmakademie.de Filmakademie Baden-Württemberg GmbH Akademiehof 10 71638 Ludwigsburg www.filmakademie.de Eintragung Amtsgericht Stuttgart HRB 205016 Vorsitzende des Aufsichtsrats: Prof. Dr. Claudia Hübner Geschäftsführer: Prof. Thomas Schadt

5 7

XFS or EXT3 ?
by Keith Roberts 05 Dec '10

05 Dec '10

There was a similar thread about which is the best FS for Centos. I'm using ext3, and wondered if XFS would be more 'data safe' than ext3. I had a 100GiB ext3 partition, and it took up 1.75GiB for FS administration purposes. I reformatted it to XFS, and it only used 50.8MB! I now have a fresh new drive to install my root Centos system onto, and wondered about creating the partitions as XFS? What about the XFS admin tools - do these get installed when you format a partition as XFS from anaconda, or are they a seperate rpm package, installed later? Kind Regards, Keith Roberts -- In theory, theory and practice are the same; in practice they are not. This email was sent from my laptop with Centos 5.5

15 24

Fiddling with software RAID1 : continue working with one of two disks failing?
by Niki Kovacs 04 Dec '10

04 Dec '10

Hi, I'm currently experimenting with software RAID1 on a spare PC with two 40 GB hard disks. Normally, on a desktop PC with only one hard disk, I have a very simple partitioning scheme like this : /dev/hda1 80 MB /boot ext2 /dev/hda2 1 GB swap /dev/hda3 39 GB / ext3 Here's what I'd like to do. Partition a second hard disk (say, /dev/hdb) with three partitions. Setup RAID1 like this : /dev/md0 80 MB /boot ext2 /dev/md1 1 GB swap /dev/md2 39 GB / ext3 I somehow managed to get this far. Here's what I have : [root@raymonde ~]# fdisk -l /dev/hda Disk /dev/hda: 41.1 GB, 41110142976 bytes 255 heads, 63 sectors/track, 4998 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/hda1 * 1 11 88326 fd Linux raid autodetect /dev/hda2 12 134 987997+ fd Linux raid autodetect /dev/hda3 135 4998 39070080 fd Linux raid autodetect [root@raymonde ~]# fdisk -l /dev/hdb Disk /dev/hdb: 41.1 GB, 41110142976 bytes 16 heads, 63 sectors/track, 79656 cylinders Units = cylinders of 1008 * 512 = 516096 bytes Device Boot Start End Blocks Id System /dev/hdb1 * 1 156 78592+ fd Linux raid autodetect /dev/hdb2 157 2095 977256 fd Linux raid autodetect /dev/hdb3 2096 79656 39090744 fd Linux raid autodetect During install, my /dev/md1 and /dev/md2 got somehow mixed up, which doesn't really matter : [root@raymonde ~]# cat /etc/fstab /dev/md1 / ext3 defaults 1 1 /dev/md0 /boot ext2 defaults 1 2 tmpfs /dev/shm tmpfs defaults 0 0 devpts /dev/pts devpts gid=5,mode=620 0 0 sysfs /sys sysfs defaults 0 0 proc /proc proc defaults 0 0 /dev/md2 swap swap defaults 0 0 I wasn't sure where to install GRUB, so I chose /dev/md0. I was wondering if this setup theoretically enabled me to continue working with one disk failure. So I tried unplugging the power cord of one of my hard disks... which resulted in a "GRUB Disk Error" on boot. Question : is there a way to still run the system with either of the two disks "damaged" (in this case : unplugged)? And if so, how would I have to go about it in my setup? Cheers from the freezing South of France, Niki

3 4

yum-complete-transaction
by Johan Scheepers 04 Dec '10

04 Dec '10

Good day, Some yum instructions I do not know. Kindly some pointers please. There are unfinished transactions remaining. You might consider running yum-complete-transaction first to finish them. The program yum-complete-transaction is found in the yum-utils package. This is where I am lost Thanks Johan

3 4

Inside the Linux boot process
by Keith Roberts 04 Dec '10

04 Dec '10

Interesting article from IBM on how Linux boots, with some nice graphics. http://www.ibm.com/developerworks/library/l-linuxboot/index.html Inside the Linux boot process Take a guided tour from the Master Boot Record to the first user-space application Kind Regards, Keith Roberts -- In theory, theory and practice are the same; in practice they are not. This email was sent from my laptop with Centos 5.5

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Discuss December 2010