Discuss December 2009

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271 discussions

Xorg goes bonkers, bazillion NVIDIA errors...
by fred smith 08 Dec '09

08 Dec '09

on one of my Centos 5.4 boxes, a machine that's around 5 years old and has always run Centos and X, and has had the same Nvidia card in it for its entire life, I'm suddenly getting these lines in the xorg log file: (WW) NVIDIA(0): WAIT (2, 6, 0x8000, 0x00000000, 0x000003c0) (EE) NVIDIA(0): Failed to allocate clip rectangle (EE) NVIDIA(0): *** Aborting *** (EE) NVIDIA(0): Failed to allocate clip rectangle (EE) NVIDIA(0): *** Aborting *** (EE) NVIDIA(0): Failed to allocate clip rectangle (EE) NVIDIA(0): *** Aborting *** (EE) NVIDIA(0): Failed to allocate clip rectangle (EE) NVIDIA(0): *** Aborting *** (EE) NVIDIA(0): Failed to allocate clip rectangle (EE) NVIDIA(0): *** Aborting *** (EE) NVIDIA(0): Failed to allocate clip rectangle (EE) NVIDIA(0): *** Aborting *** (EE) NVIDIA(0): Failed to allocate clip rectangle (EE) NVIDIA(0): *** Aborting *** (EE) NVIDIA(0): Failed to allocate clip rectangle (EE) NVIDIA(0): *** Aborting *** followed by millions more like them. it's currently sitting mostly unused, except that it's running a Folding At Home client. it'll run for a day or a week then I'll note the screen is in powersave mode, will attempt to wake it up by moving the mouse or touching a key and nothing happens. (for purposes of this testing I've disabled the screensaver, so the screen should never shut off.) I can SOMETIMES ssh into it, if it hasn't completely died yet, and if I can, top shows that Xorg is consuming about 99% of the CPU instead of the folding at home client which should be consuming most of it. I guess it's busy spewing errors to the Xorg log file, or something. The last time I found it like this I tried to kill xorg. kill -15 wouldn't kill it so I tried kill -9, then the whole box seized up, requiring a reset. sometimes it's already unresponsive, even to ssh or ping, by the time I notice the problem. it's running an old Nvidia Geforce 4 MX400 card and the Nvidia proprietary driver NVIDIA-Linux-x86-96.43.01-pkg1.run, downloaded directly from the nvidia web site. the date on that file is Oct 2007, so that means that's the one that it has been using since then. but it's only the last 6 weeks or so it's started doing this. other than some vaguely-defined "nvidia driver problems", what may be going on here? (I can buy an nvidia conflict with the stock centos kernel, but I'd be dubious, since it's been running this driver for two years and earlier versions for 4 or 5. any such conflict would seem likely a kernel issue, to me, since it's newly exhibited.) Thanks! Fred -- ---- Fred Smith -- fredex(a)fcshome.stoneham.ma.us ----------------------------- But God demonstrates his own love for us in this: While we were still sinners, Christ died for us. ------------------------------- Romans 5:8 (niv) ------------------------------

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firefox-3.0.15 on CentOS 4
by Agile Aspect 07 Dec '09

07 Dec '09

Hi - I updated firefox-3.0.5 from firefox-3.0.15on CentOS 4 this weekend and now I can't start it because it has the wrong version of NSS and I can't update NSS to the correct version. Does anyone know where I can find the RPM for CentOS 4 version of firefox-3.0.5? Or how I can tell yum to install version firefox-3.0.5 instead of firefox-3.0.15? Thank you. -- Enjoy global warming while it lasts.

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how to do startup scripts?
by Roland Roland 07 Dec '09

07 Dec '09

Hello, I've just finished installing Atlassian's bamboo it comes with two ways to start it up one through a bash shell script bamboo.sh and another through java script (this one is better as it has the ability to start up the service if it got shutdown for any reason) so I'm wondering how can I set this service to start on boot.. I know how to set a script on login in my profile though not on boot.. any suggestion? I've looked around about none interactive shells and so on.. so if I did a symbolic link from bamboo.sh script to /etc/init.d would that work? what about variables inside the script would they b read ? obviously a newbie here so appreciate any detailed explanation if possible about interactive/ none interactive shells and of course if theres an advice about how to solve this issue.. PS: trying to educate myself about linux along the way so any explanation would be greatly appreciated...

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lvm monitoring
by Karanbir Singh 07 Dec '09

07 Dec '09

Hi, At the moment, I am monitoring my lvm resources on a machine with the usual 'pvs;vgs;lvs' output and comparing with whatever is a known good state. But this has a few problems: 1- I need to setup a known good state per machine, which can look quite different from each other : specially when machines are getting dynamic vm builds and teardowns dozens of times per day, or when disk resource allocations are spread over more than one machine. 2- Its hard to work out what is really going on with bits that are not mounted ( like snapshots ). 3- its hard to tie down to physical media ( I screen scrape at the moment, which is dirty and exceptionally prone to nose! ) I am sure there are plenty of people who are monitoring lvm setups on their machines, just wondering what it is that you guys are doing. - KB

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Re: [CentOS] Is ext4 safe for a production server?
by Brent L. Bates 07 Dec '09

07 Dec '09

I guess I forgot to include that some of those Linux systems I've used XFS on were 32 bit OS installs. However, lvm was not used on them, md & NFS were, but not lvm.

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Re: [CentOS] Inquiry:How to compare two files but not in line-by-line basis?
by Brian McKerr 07 Dec '09

07 Dec '09

diff -y ? On Wed, Dec 2, 2009 at 7:42 PM, Simon Banton <centos(a)web.org.uk> wrote: > At 08:54 +0000 2/12/09, hadi motamedi wrote: > >Dear All > >Can you please do me favor and let me know how can I compare two > >files but not in line-by-line basis on my CentOS server ? I mean say > >row#1 in file1 has the same data as say row#5 in file2 , but the > >comm compares them in line-by-line basis that is not intended . It > >seems that the diff cannot do the job as well > > This'll show you which lines are common to both files, and for the > ones that aren't which file they're in. > > perl -MData::Dumper -le 'while(<>) {chomp; push @{$s->{"$_"}}, > $ARGV}; END{ print Dumper($s) }' file1 file2 > > ... someone will be along shortly with a more elegant method. > > HTH > > S. > _______________________________________________ > CentOS mailing list > CentOS(a)centos.org > http://lists.centos.org/mailman/listinfo/centos >

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Re: [CentOS] Is ext4 safe for a production server?
by Brent L. Bates 07 Dec '09

07 Dec '09

XFS is the most stable file system I've seen or used. I've seen it survive power failures and disk problems with out a problem. It is the ONLY file system I trust. It is stable, reliable, dependable, and practically bullet proof. I've been using XFS almost since it came into existence on SGI's (IRIX) and we've been using it under Linux for years too, also with out problems.

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Kickstart wrong swap size
by Lars Hecking 07 Dec '09

07 Dec '09

All machines kickstarted here consistently have a swap partition with the wrong size. According to the RHEL5 manual: | To determine the size of the swap partition automatically, use the | --recommended option: | | swap --recommended | | The recommended maximum swap size for machines with less than 2GB of RAM is | twice the amount of RAM. For machines with 2GB or more, this recommendation | changes to 2GB plus the amount of RAM. However, the swap partition on all kickstarted machines is 2GB, regardless of RAM size. This is the relevant portion of the kickstart file: bootloader --location=mbr selinux --disabled reboot clearpart --all --initlabel part /boot --fstype ext3 --size=102 part / --fstype ext3 --size=20480 part swap --recommended part /var --fstype ext3 --size=1 --grow The kickstart setup is currently based on CentOS 5.2 (and I cannot move to 5.4 yet as this is a corporate setup affecting hundreds of machines). Hardcoding swap size isn't a good idea either because there's a range of different memory configurations. I could however confirm that a manual, graphical install from the 5.4 DVD with recommended settings creates 10GB swap on a 8GB RAM machine.

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Resizing / partition ?
by armann 07 Dec '09

07 Dec '09

Hi. I know this has probably been discussed a lot so I'm sorry, noob here. I found a good tutorial here: http://fedorasolved.org/Members/zcat/shrink-lvm-for-new-partition My only problem is understanding this. "To calculate the new End sector, ADD the partition Start sector to the PV PSize, and then add a safety margin of around 131072 sectors (64MB) to that." If anybody has another way of doing this or any comments that would be great. Thanks. Armann Jakob Palsson

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Name Resolution Broken for One Address
by John Thomas 07 Dec '09

07 Dec '09

I seem to have broken my laptop and have been unable to figure it out. Name resolution works great, except one address, which seems to be resolving to 0.0.0.1. Could you help me figure out what I have done and fix it? The following lines are in /etc/hosts 192.168.11.1 dev.example.com 192.168.11.1 dev1.example.com Pinging any other address that I try works, except dev.example.com. CentOS54[root@ctlaptop etc]# ping dev1.example.com PING dev1.example.com (192.168.11.1) 56(84) bytes of data. 64 bytes from dev.example.com (192.168.11.1): icmp_seq=1 ttl=64 time=0.093 ms <snip> CentOS54[root@ctlaptop ~]# ping dev.example.com connect: Invalid argument CentOS54[root@ctlaptop ~]# strace ping dev.example.com execve("/bin/ping", ["ping", "dev.example.com"], [/* 33 vars */]) = 0 brk(0) = 0x88f1000 access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory) open("/etc/ld.so.cache", O_RDONLY) = 3 fstat64(3, {st_mode=S_IFREG|0644, st_size=82386, ...}) = 0 mmap2(NULL, 82386, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7f8b000 close(3) = 0 open("/lib/libresolv.so.2", O_RDONLY) = 3 read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\300p\277\0004\0\0\0"..., 512) = 512 fstat64(3, {st_mode=S_IFREG|0755, st_size=76400, ...}) = 0 mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7f8a000 mmap2(NULL, 75976, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xd62000 mmap2(0xd71000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xe) = 0xd71000 mmap2(0xd73000, 6344, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xd73000 close(3) = 0 open("/lib/libc.so.6", O_RDONLY) = 3 read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\340\277.\0004\0\0\0"..., 512) = 512 fstat64(3, {st_mode=S_IFREG|0755, st_size=1611564, ...}) = 0 mmap2(NULL, 1328580, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x994000 mmap2(0xad3000, 12288, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x13f) = 0xad3000 mmap2(0xad6000, 9668, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xad6000 close(3) = 0 mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7f89000 set_thread_area({entry_number:-1 -> 6, base_addr:0xb7f896c0, limit:1048575, seg_32bit:1, contents:0, read_exec_only:0, limit_in_pages:1, seg_not_present:0, useable:1}) = 0 mprotect(0xad3000, 8192, PROT_READ) = 0 mprotect(0xd71000, 4096, PROT_READ) = 0 mprotect(0x15e000, 4096, PROT_READ) = 0 munmap(0xb7f8b000, 82386) = 0 socket(PF_INET, SOCK_RAW, IPPROTO_ICMP) = 3 getuid32() = 0 setuid32(0) = 0 brk(0) = 0x88f1000 brk(0x8912000) = 0x8912000 getpid() = 5376 open("/etc/resolv.conf", O_RDONLY) = 4 fstat64(4, {st_mode=S_IFREG|0644, st_size=109, ...}) = 0 mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7f9f000 read(4, "# Generated by NetworkManager\ndo"..., 4096) = 109 read(4, "", 4096) = 0 close(4) = 0 munmap(0xb7f9f000, 4096) = 0 socket(PF_FILE, SOCK_STREAM, 0) = 4 fcntl64(4, F_SETFL, O_RDWR|O_NONBLOCK) = 0 connect(4, {sa_family=AF_FILE, path="/var/run/nscd/socket"...}, 110) = 0 send(4, "\2\0\0\0\r\0\0\0\6\0\0\0hosts\0", 18, MSG_NOSIGNAL) = 18 poll([{fd=4, events=POLLIN|POLLERR|POLLHUP}], 1, 5000) = 1 ([{fd=4, revents=POLLIN}]) recvmsg(4, {msg_name(0)=NULL, msg_iov(2)=[{"hosts\0", 6}, {"\270O\3\0\0\0\0\0", 8}], msg_controllen=16, {cmsg_len=16, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, {5}}, msg_flags=0}, 0) = 14 mmap2(NULL, 217016, PROT_READ, MAP_SHARED, 5, 0) = 0xb7f54000 close(5) = 0 close(4) = 0 socket(PF_INET, SOCK_DGRAM, IPPROTO_IP) = 4 connect(4, {sa_family=AF_INET, sin_port=htons(1025), sin_addr=inet_addr("0.0.0.1")}, 16) = -1 EINVAL (Invalid argument) dup(2) = 5 fcntl64(5, F_GETFL) = 0x2 (flags O_RDWR) fstat64(5, {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 0), ...}) = 0 mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7f9f000 _llseek(5, 0, 0xbfd43234, SEEK_CUR) = -1 ESPIPE (Illegal seek) write(5, "connect: Invalid argument\n", 26connect: Invalid argument ) = 26 close(5) = 0 munmap(0xb7f9f000, 4096) = 0 exit_group(2) = ? -- Sincerely, John Thomas

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Discuss December 2009