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Setting up large (12.5 TB) filesystem howto?
by Götz Reinicke - IT-Koordinator 28 Aug '09

28 Aug '09

Hi, I'm trying to set up an iscsi 12.5 TB storage for some data backup. Doing so, I had some difficulties to find the right tool, maybe it's also a question of the system settings... The server is a 32Bit CentOS 5.3 with the recent updates. Ths iscsi connection can be establised. fdisk and parted fail to create any information on the device or fail completely. using the lvm tools (pvcreate, vgcreate, lvcreate), I could finaly create a logical volume: lvdisplay /dev/VolGroup02/lvol0 --- Logical volume --- LV Name /dev/VolGroup02/lvol0 VG Name VolGroup02 LV UUID h7T6tD-JZw2-UEdb-q1ml-BDqp-9E0u-mAop6x LV Write Access read/write LV Status available # open 0 LV Size 12,73 TB Current LE 3337487 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 253:4 But, I can't create a filesystem on it: mkfs.ext3 -m 2 -j -O dir_index -v -b 4096 -L iscsi2lvol0 /dev/mapper/VolGroup02-lvol0 mke2fs 1.39 (29-May-2006) mkfs.ext3: Filesystem too large. No more than 2**31-1 blocks (8TB using a blocksize of 4k) are currently supported. The limits information provided by red hat say, that RH EL 5.1 supports 16 TB filesystems: http://www.redhat.com/rhel/compare/ -> Maximum filesystem size (Ext3): 16TB in 5.1 Using a block size of 8192 gives a warning, that this size is to large for that system. So my question: What is my missunderstanding or what's wrong with my system? Where are the real limits? Do I have to switch the OS to 64 Bit? Setting up large Filesystems isn't my staff of life :-) Thanks for amy how to or help of any kind - 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 Staatsrätin für Demographischen Wandel und für Senioren im Staatsministerium Geschäftsführer: Prof. Thomas Schadt

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Centos 5.4
by Alan McKay 28 Aug '09

28 Aug '09

I just saw in another list email that RHEL 5.4 is due out any day now. How long does it then take for the cooresponding CentOS release to come out? I'm in the process of making a new master server image based on 5.3. Though I suppose since I'm using Kickstart/Anaconda, it should be pretty easy to change it from 5.3 to 5.4 -- “Don't eat anything you've ever seen advertised on TV” - Michael Pollan, author of "In Defense of Food"

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Strange connectivity problem from linux.
by Tharun Kumar Allu 28 Aug '09

28 Aug '09

Hi I have been facing a strange connectivity problem from CentOS and Fedora boxes. When I telnet to $ telnet adp.eease.com 443 it works fine some times and every 5-10 tries or so it says connection refused. And this does not happen from my windows box. Can anyone from this list try this on their linux installation and see if they get the same behaviour? Thanks Tharun

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"gpg --verify-files" fails on some files, works on others
by Sean Carolan 28 Aug '09

28 Aug '09

I have a very strange situation where the gpg command will fail to verify whether there is valid PGP data in some files. Decrypting these files works flawlessly. Here is an example: [root@server autoimport]# gpg -vv --verify-files 01UserEnumswValues.txt.asc.txt gpg: armor: BEGIN PGP MESSAGE gpg: armor header: Version: GnuPG v1.4.7 (MingW32) :pubkey enc packet: version 3, algo 16, keyid F0682D87CF4ED243 data: [1022 bits] data: [1024 bits] [root@server autoimport]# gpg -vv --verify-files 03users.txt.asc.txt gpg: armor: BEGIN PGP MESSAGE gpg: armor header: Version: GnuPG v1.4.7 (MingW32) :pubkey enc packet: version 3, algo 16, keyid F0682D87CF4ED243 data: [1021 bits] data: [1023 bits] gpg: no valid OpenPGP data found. Note that the first file is correctly identified as OpenPGP encrypted data, and has exit status of 0. The second file gives the error "no valid OpenPGP data found", even though I'm able to decrypt the file with no problems. Both these files were encrypted with the same key, and both contain plain text CSV data. Any ideas why this is failing on some files and not others?

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[off-topic] Question about csh.
by Marcelo M. Garcia 28 Aug '09

28 Aug '09

Hi I received this request from a user and could not find the solution. I would like to know if someone already solved this: "At the command prompt I used to be able to type the first letter of a line command and then by using the up arrow key, scroll through all of the line commands, that begin with that letter, that I had previously executed." It's a machine with CentOS-5.3, x86_64, and tcsh-6.14-14.el5, but his shell is 'csh'. Thanks Marcelo

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bind
by chloe K 28 Aug '09

28 Aug '09

Hi I already stop the named and killall bind process. how can I clear the files under named/chroot/proc/ folder as those files are restricted me for tar backup? /var/named/chroot/proc/sys/net/ipv6/conf/lo/accept_ra_defrtr /var/named/chroot/proc/sys/net/ipv6/conf/lo/max_addresses /var/named/chroot/proc/sys/net/ipv6/conf/lo/max_desync_factor /var/named/chroot/proc/sys/net/ipv6/conf/lo/regen_max_retry /var/named/chroot/proc/sys/net/ipv6/conf/lo/temp_prefered_lft Thank you __________________________________________________________________ The new Internet Explorer® 8 - Faster, safer, easier. Optimized for Yahoo! Get it Now for Free! at http://downloads.yahoo.com/ca/internetexplorer/

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mysql-server-5.0.82sp1-1.el4_8 upgrade
by David Hrbáč 28 Aug '09

28 Aug '09

Hi, There has been update to mysql within the centosplus repository on 26th August. Please be aware, that you might need to upgrade tables after the server upgrade. 1) run CHECK TABLE .... 2) if the response is 'Table upgrade required. Please do "REPAIR TABLE `tablename`" to fix it!' 3) do run :o) REPAIR TABLE 4) good point is again CHECK TABLE 4) good point is OPTIMIZE TABLE Regards, David Hrbáč

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Help Slim Down Centos Install
by Chris Andrews 28 Aug '09

28 Aug '09

Hello Everyone, I was wondering does anyone know how I can slim down Centos install, what I mean by slim down is whenever I install Centos with nothing but xen. I have all type stuff that is not needed like bluetooth and etc. This is a server, so I know that bluetooth is not need but I don't have any other menus to remove software when install from cd. So what would be the best way to slim this server down to only need the bare to run xen?

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Re: [CentOS] my fonts look horrible (centos5.3/xfce)
by Radu-Cristian FOTESCU 28 Aug '09

28 Aug '09

> Thanks for the links. I have already basically done everything > there and have the ms fonts. Unfortunately they look pretty bad.. I have not followed the thread carefully, but I've seen in a couple of screenshots that bitmaps fonts might have been used. Have you tried this? "ln -s /etc/fonts/conf.avail/70-no-bitmaps.conf /etc/fonts/conf.d/70-no-bitmaps" Cheers, R-C __________________________________________________________________ Get a sneak peak at messages with a handy reading pane with All new Yahoo! Mail: http://ca.promos.yahoo.com/newmail/overview2/

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SELinux messages after compiling new kernel
by Sergio Belkin 27 Aug '09

27 Aug '09

Hi, I compiled a kernel from sources (2.6.30.5) and when system is booting shows these errors: SELinux: 61 classes, 69080 rules SELinux: class peer not defined in policy SELinux: class capability2 not defined in policy SELinux: class kernel_service not defined in policy SELinux: permission open in class dir not defined in policy SELinux: permission open in class file not defined in policy SELinux: permission open in class chr_file not defined in policy SELinux: permission open in class blk_file not defined in policy SELinux: permission open in class sock_file not defined in policy SELinux: permission open in class fifo_file not defined in policy SELinux: permission recvfrom in class node not defined in policy SELinux: permission sendto in class node not defined in policy SELinux: permission ingress in class netif not defined in policy SELinux: permission egress in class netif not defined in policy SELinux: permission setfcap in class capability not defined in policy SELinux: permission nlmsg_tty_audit in class netlink_audit_socket not defined in policy SELinux: permission forward_in in class packet not defined in policy SELinux: permission forward_out in class packet not defined in policy SELinux: the above unknown classes and permissions will be denied How can I fix these errors? Thanks in advance! -- -- Open Kairos http://www.openkairos.com Watch More TV http://sebelk.blogspot.com Sergio Belkin -

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