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34753 discussions

Does sprof work on CentOS5?
by Hywel Richards 29 Jul '08

29 Jul '08

No matter how I try, I can't seem to get a library profile from sprof on CentOS5. Does anyone know if sprof actually works on CentOS5? I'd be very interested to hear if anyone is using it successfully. At the moment I'm trying something like this to get the dump: LD_LIBRARY_PATH=. LD_PROFILE=libmy.so ./mymain where libmy.so is the library I want to profile, and mymain is the executable which links to it. This appears to create the profile dump successfully (which appears at /var/tmp/libmy.so.profile), but when I try to get a readable profile using sprof it fails: $ sprof libmy.so /var/tmp/libmy.so.profile sprof: failed to load shared object `libmy.so' I have a CentOS4 machine here, and doing the above on that works fine, but I've had no luck at all on CentOS5 (all currently up-to-date). Can anyone help? (Please!)

4 9

Samba, SELinux and system created directories
by Mike 29 Jul '08

29 Jul '08

Does anybody know what 'setsebool -P samba_export_all_rw on' is actually supposed to do? I'm trying to share /tmp via samba and am seeing the same results with samba_export_all_rw set to on or off. Maybe I'm misunderstanding what this is intended to do but from windows I cannot see files in /tmp with 'tmp_t' security context (as shown by ls -lZ /tmp). I do see those with 'smbd_tmp_t' which are files placed there from windows via samba. I assumed that this boolean, when on, would allow samba to see files in /tmp regardless of security context. I did try 'touch /.autorelabel' and rebooting, still no dice. >From /etc/samba/smb.conf: # If you need to share a system created directory you can use one of the # following (read-only/read-write): # setsebool -P samba_export_all_ro on # or # setsebool -P samba_export_all_rw on

1 0

/etc/hosts missing localhost?
by Bill Campbell 29 Jul '08

29 Jul '08

Is there any reason why /etc/hosts would be missing the line, 127.0.0.1 localhost? I just spent an hour trying to figure out why I could not connect to postgresql using ``psql -h ...'', finally figuring out that the /etc/hosts file was the problem. Bill -- INTERNET: bill(a)celestial.com Bill Campbell; Celestial Software LLC URL: http://www.celestial.com/ PO Box 820; 6641 E. Mercer Way Voice: (206) 236-1676 Mercer Island, WA 98040-0820 Fax: (206) 232-9186 To say that UNIX is doomed is pretty rabid, OS/2 will certainly play a role, but you don't build a hundred million instructions per second multiprocessor micro and then try to run it on OS/2. I mean, get serious. -- William Zachmann, International Data Corp

5 8

Change Web Server to another disk in Centos 5.2
by Salvador Torres 29 Jul '08

29 Jul '08

Hi, I'm new to CentOS 5.2 and I want to know how can I change the /var/www/html directory to another disk. That disk is not even partitioned. I've googled and even searched in centos.org forums and documentation, and found nothing. I want to have in separate disks CentOS and my web server. Can anybody recommend any CentOS 5.2 book, because every time I want to find an answer to my questions I spend a lot of time searching for it in the centos.org website and googling and nothing useful comes up. Thanks

6 7

Xdefaults file.
by James B. Byrne 29 Jul '08

29 Jul '08

I am trying to get my xterm window under gnome to open with large fonts, with light green foreground and dark green background. I have the following .Xdefaults file contents: $ cat .Xdefaults ! This is a comment ;-) #ifdef COLOR *customization: -color #endif !! Let's cast a wide net, for any app supporting these ! Blink instead of beeping *visualBell: True *scrollTtyOutput: False *scrollKey: True XTerm*saveLines: 1500 ! Do not clear the screen after the program exits XTerm*VT100*titeInhibit: true ! Enable soft cut and paste XTerm*VT100.translations: #override \ : select-end(PRIMARY, CLIPBOARD, CUT_BUFFER0) ! Fix up xterm's keybindings xterm*VT100.translations: #override \ <Key>BackSpace: string(0x7F) \n\ <Key>Insert: string(0x1b) string("[2~")\n\ <Key>Delete: string(0x1b) string("[3~")\n\ <Key>Home: string(0x1b) string("[1~")\n\ <Key>End: string(0x1b) string("[4~")\n\ <Key>Page_Up: string(0x1b) string("[5~")\n\ <Key>Page_Down: string(0x1b) string("[6~")\n\ <KeyPress>Prior: scroll-back(1,page)\n\ <KeyPress>Next: scroll-forw(1,page) ! Set xterm defaults Xterm*background: darkgreen Xterm*foreground: lightgreen Xterm*font: 9x15 <--snip At some point I had the colours displaying correctly but I could not get the default font to change to large. In an attempt to get Xterm to use the above file I ran the command: $ xrdb ~/.Xdefaults Now when xterm opens I have a black on white display with tiny fonts. I have to use Xterm in a specific instance because the version of gnome terminal that ships with CentOS-5 breaks vt102 emulation horribly. I have already spent way too much time trying to get Xterm and Xdefaults to work together as they should. I do not understand what it is that I am missing or doing wrong. Can somebody please point out what is wrong with my configuration? I have already read, and reread, the man page. Thanks, -- *** E-Mail is NOT a SECURE channel *** James B. Byrne mailto:ByrneJB@Harte-Lyne.ca Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3

2 1

BUG: soft lockup - CPU#1 stuck for 61s!
by Ian jonhson 29 Jul '08

29 Jul '08

Dear All, I selected CentOS5 in my works and installed them in two DELL PowerEdge1950. However, a trouble blocked me during the machines run after two days. The machines crashed and the syslog said it got the following messages: ------------------ part dump of /var/log/messages ---------------------- ..... Jul 25 02:15:02 vega2008 kernel: [<c045bc58>] ? exit_mmap+0x93/0xc9 Jul 25 02:15:02 vega2008 kernel: [<c04214c2>] ? mmput+0x25/0x68 Jul 25 02:15:02 vega2008 kernel: [<c046e9c9>] ? flush_old_exec+0x4f8/0x777 Jul 25 02:15:02 vega2008 kernel: [<c046dfcf>] ? kernel_read+0x32/0x43 Jul 25 02:15:02 vega2008 kernel: [<c0490e60>] ? load_elf_binary+0x359/0x1152 Jul 25 02:15:02 vega2008 kernel: [<c045a6ee>] ? get_user_pages+0x2d5/0x35c Jul 25 02:15:02 vega2008 kernel: [<c04570d2>] ? page_address+0x78/0x98 Jul 25 02:15:02 vega2008 kernel: [<c045735a>] ? kmap_high+0x19/0x16b Jul 25 02:15:02 vega2008 kernel: [<c04570d2>] ? page_address+0x78/0x98 Jul 25 02:15:02 vega2008 kernel: [<c046dced>] ? copy_strings+0x169/0x173 Jul 25 02:15:02 vega2008 kernel: [<c046ddad>] ? search_binary_handler+0x8f/0x1af Jul 25 02:15:02 vega2008 kernel: [<c046efe7>] ? do_execve+0x133/0x194 Jul 25 02:15:02 vega2008 kernel: [<c04030d7>] ? sys_execve+0x2a/0x4a Jul 25 02:15:02 vega2008 kernel: [<c04047aa>] ? syscall_call+0x7/0xb Jul 25 02:15:02 vega2008 kernel: [<c0610000>] ? early_init_intel+0x0/0x3c Jul 25 02:15:02 vega2008 kernel: ======================= Jul 25 02:15:02 vega2008 kernel: BUG: soft lockup - CPU#7 stuck for 61s! [sshd:24188] Jul 25 02:15:02 vega2008 kernel: Jul 25 02:15:02 vega2008 kernel: Pid: 24188, comm: sshd Not tainted (2.6.25.3 #3) Jul 25 02:15:02 vega2008 kernel: EIP: 0060:[<c06154f0>] EFLAGS: 00200293 CPU: 7 Jul 25 02:15:02 vega2008 kernel: EIP is at _spin_lock+0xa/0x15 Jul 25 02:15:02 vega2008 kernel: EAX: c079349c EBX: f79ec580 ECX: ffffffff EDX: 00008381 Jul 25 02:15:02 vega2008 kernel: ESI: ffffffff EDI: f79ec580 EBP: f68a6580 ESP: f1824e50 Jul 25 02:15:02 vega2008 kernel: DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 Jul 25 02:15:02 vega2008 kernel: CR0: 8005003b CR2: b7ebf978 CR3: 32996000 CR4: 000006f0 Jul 25 02:15:02 vega2008 kernel: DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 Jul 25 02:15:02 vega2008 kernel: DR6: ffff0ff0 DR7: 00000400 Jul 25 02:15:02 vega2008 kernel: [<c04119c7>] ? native_flush_tlb_others+0x49/0x9b Jul 25 02:15:02 vega2008 kernel: [<c0411e65>] ? flush_tlb_mm+0x51/0x54 Jul 25 02:15:02 vega2008 kernel: [<c045bc58>] ? exit_mmap+0x93/0xc9 Jul 25 02:15:02 vega2008 kernel: [<c04214c2>] ? mmput+0x25/0x68 Jul 25 02:15:02 vega2008 kernel: [<c046e9c9>] ? flush_old_exec+0x4f8/0x777 Jul 25 02:15:02 vega2008 kernel: [<c046dfcf>] ? kernel_read+0x32/0x43 Jul 25 02:15:02 vega2008 kernel: [<c0490e60>] ? load_elf_binary+0x359/0x1152 Jul 25 02:15:02 vega2008 kernel: [<c045a6ee>] ? get_user_pages+0x2d5/0x35c Jul 25 02:15:02 vega2008 kernel: [<c04570d2>] ? page_address+0x78/0x98 Jul 25 02:15:02 vega2008 kernel: [<c045735a>] ? kmap_high+0x19/0x16b Jul 25 02:15:02 vega2008 kernel: [<c04570d2>] ? page_address+0x78/0x98 Jul 25 02:15:02 vega2008 kernel: [<c046dced>] ? copy_strings+0x169/0x173 Jul 25 02:15:02 vega2008 kernel: [<c046ddad>] ? search_binary_handler+0x8f/0x1af Jul 25 02:15:02 vega2008 kernel: [<c046efe7>] ? do_execve+0x133/0x194 Jul 25 02:15:02 vega2008 kernel: [<c04030d7>] ? sys_execve+0x2a/0x4a Jul 25 02:15:02 vega2008 kernel: [<c04047aa>] ? syscall_call+0x7/0xb Jul 25 02:15:02 vega2008 kernel: [<c0610000>] ? early_init_intel+0x0/0x3c Jul 25 02:15:02 vega2008 kernel: ======================= Jul 25 02:15:02 vega2008 kernel: BUG: soft lockup - CPU#1 stuck for 61s! [http_cap:12228] ............. ----------------------------------------------------------------------------------- I choose CentOS because I believe it is the most stable OS in commodity machines. But I don't know how to do when facing the trouble. The difference lies in that I patched a PF_RING patch in original kernel and recompiled the kernel to run my machines. I wonder whether the patched kernel crashes the CentOS because PF_RING automatically downloads the kernel codes from www.kernel.org, but not the one from www.centos.org? Or, the centOS holds the bugs in its distribution? Hope somebody can given me some advices. Thanks in advance. Best Regards, Ian

5 10

PF_RING crashed the CentOS5 - BUG: soft lockup - CPU#7
by Ian jonhson 29 Jul '08

29 Jul '08

Hi all, The PF_RING seems not to work smoothly in CentOS 5. Several day before, I patched the kernel 2.6.25.3 and installed the PF_RING-patched kernel in my CentOS5. Based on the PF_RING, I developed my program to capture the network packages. I wished it can work until the machine power is off. Unforturnately, no matter how to adjust my program, whole system can not run more than 48 hours. Finally, whole system crashed and syslogd said it found the following kernel output. I have contacted CentOS people, but they said they had not met the same problem in their operating system before. I googled the internet and found similar bug occurred in Ubuntu on the same hardware platform: Dell poweredge. However, the fixing has to patch current kernel source code. https://bugs.launchpad.net/ubuntu/hardy/+source/linux/+bug/214814 Also, I don't know what kernel they used. I downloaded the kernel source codes from www.kernel.org and patched it with PF_RING. Then, I setup the pathed kernel to run CentOS 5. I would like to know whether I can avoid the bug if I used the original CentOS kernel code, not the one from www.kernel.org. Are there anyone who meet the similar trouble? Thanks a lot. ------------------ part dump of /var/log/messages ---------------------- ..... Jul 25 02:15:02 vega2008 kernel: [<c045bc58>] ? exit_mmap+0x93/0xc9 Jul 25 02:15:02 vega2008 kernel: [<c04214c2>] ? mmput+0x25/0x68 Jul 25 02:15:02 vega2008 kernel: [<c046e9c9>] ? flush_old_exec+0x4f8/0x777 Jul 25 02:15:02 vega2008 kernel: [<c046dfcf>] ? kernel_read+0x32/0x43 Jul 25 02:15:02 vega2008 kernel: [<c0490e60>] ? load_elf_binary+0x359/0x1152 Jul 25 02:15:02 vega2008 kernel: [<c045a6ee>] ? get_user_pages+0x2d5/0x35c Jul 25 02:15:02 vega2008 kernel: [<c04570d2>] ? page_address+0x78/0x98 Jul 25 02:15:02 vega2008 kernel: [<c045735a>] ? kmap_high+0x19/0x16b Jul 25 02:15:02 vega2008 kernel: [<c04570d2>] ? page_address+0x78/0x98 Jul 25 02:15:02 vega2008 kernel: [<c046dced>] ? copy_strings+0x169/0x173 Jul 25 02:15:02 vega2008 kernel: [<c046ddad>] ? search_binary_handler+0x8f/0x1af Jul 25 02:15:02 vega2008 kernel: [<c046efe7>] ? do_execve+0x133/0x194 Jul 25 02:15:02 vega2008 kernel: [<c04030d7>] ? sys_execve+0x2a/0x4a Jul 25 02:15:02 vega2008 kernel: [<c04047aa>] ? syscall_call+0x7/0xb Jul 25 02:15:02 vega2008 kernel: [<c0610000>] ? early_init_intel+0x0/0x3c Jul 25 02:15:02 vega2008 kernel: ======================= Jul 25 02:15:02 vega2008 kernel: BUG: soft lockup - CPU#7 stuck for 61s! [sshd:24188] Jul 25 02:15:02 vega2008 kernel: Jul 25 02:15:02 vega2008 kernel: Pid: 24188, comm: sshd Not tainted (2.6.25.3 #3) Jul 25 02:15:02 vega2008 kernel: EIP: 0060:[<c06154f0>] EFLAGS: 00200293 CPU: 7 Jul 25 02:15:02 vega2008 kernel: EIP is at _spin_lock+0xa/0x15 Jul 25 02:15:02 vega2008 kernel: EAX: c079349c EBX: f79ec580 ECX: ffffffff EDX: 00008381 Jul 25 02:15:02 vega2008 kernel: ESI: ffffffff EDI: f79ec580 EBP: f68a6580 ESP: f1824e50 Jul 25 02:15:02 vega2008 kernel: DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 Jul 25 02:15:02 vega2008 kernel: CR0: 8005003b CR2: b7ebf978 CR3: 32996000 CR4: 000006f0 Jul 25 02:15:02 vega2008 kernel: DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 Jul 25 02:15:02 vega2008 kernel: DR6: ffff0ff0 DR7: 00000400 Jul 25 02:15:02 vega2008 kernel: [<c04119c7>] ? native_flush_tlb_others+0x49/0x9b Jul 25 02:15:02 vega2008 kernel: [<c0411e65>] ? flush_tlb_mm+0x51/0x54 Jul 25 02:15:02 vega2008 kernel: [<c045bc58>] ? exit_mmap+0x93/0xc9 Jul 25 02:15:02 vega2008 kernel: [<c04214c2>] ? mmput+0x25/0x68 Jul 25 02:15:02 vega2008 kernel: [<c046e9c9>] ? flush_old_exec+0x4f8/0x777 Jul 25 02:15:02 vega2008 kernel: [<c046dfcf>] ? kernel_read+0x32/0x43 Jul 25 02:15:02 vega2008 kernel: [<c0490e60>] ? load_elf_binary+0x359/0x1152 Jul 25 02:15:02 vega2008 kernel: [<c045a6ee>] ? get_user_pages+0x2d5/0x35c Jul 25 02:15:02 vega2008 kernel: [<c04570d2>] ? page_address+0x78/0x98 Jul 25 02:15:02 vega2008 kernel: [<c045735a>] ? kmap_high+0x19/0x16b Jul 25 02:15:02 vega2008 kernel: [<c04570d2>] ? page_address+0x78/0x98 Jul 25 02:15:02 vega2008 kernel: [<c046dced>] ? copy_strings+0x169/0x173 Jul 25 02:15:02 vega2008 kernel: [<c046ddad>] ? search_binary_handler+0x8f/0x1af Jul 25 02:15:02 vega2008 kernel: [<c046efe7>] ? do_execve+0x133/0x194 Jul 25 02:15:02 vega2008 kernel: [<c04030d7>] ? sys_execve+0x2a/0x4a Jul 25 02:15:02 vega2008 kernel: [<c04047aa>] ? syscall_call+0x7/0xb Jul 25 02:15:02 vega2008 kernel: [<c0610000>] ? early_init_intel+0x0/0x3c Jul 25 02:15:02 vega2008 kernel: ======================= Jul 25 02:15:02 vega2008 kernel: BUG: soft lockup - CPU#1 stuck for 61s! [http_cap:12228] ............. -----------------------------------------------------------------------------------

3 5

restore
by Mad Unix 29 Jul '08

29 Jul '08

Am trying to do restore of control file on Linux Machine 64Bit CenTOS5.2, i get the following RMAN> restore controlfile; Starting restore at 29-07-2008 using channel ORA_DISK_1 channel ORA_DISK_1: starting datafile backupset restore channel ORA_DISK_1: restoring control file channel ORA_DISK_1: reading from backup piece /u01/oracle/product/10.2.0/db/dbs/c-2142365377-20080729-01 ORA-19870: error reading backup piece /u01/oracle/product/10.2.0/db/dbs/c-2142365377-20080729-01 ORA-19505: failed to identify file "/u01/oracle/product/10.2.0/db/dbs/c-2142365377-20080729-01" ORA-27037: unable to obtain file status Linux-x86_64 Error: 13: Permission denied Additional information: 3 failover to previous backup channel ORA_DISK_1: restoring control file ORA-19625: error identifying file /backup_rman/cont_backup/ctl_file_t661365316_s2103_p1 ORA-27047: unable to read the header block of file Additional information: 2 ORA-19600: input file is control file (/backup_rman/cont_backup/ctl_file_t661365316_s2103_p1) ORA-19601: output file is control file (/u01/oracle/oradata/sdc/control0.ctl) failover to previous backup - The control files has been transfered from AIX5.3 to a Linux Machine !! - I checked the permissions, they are rw. [oracle@PowerEdge1 cont_backup]$ ls -al total 92272 drwxrwxrwx 2 oracle dba 4096 Jul 29 17:05 . drwxrwxrwx 4 oracle dba 4096 Jul 29 17:10 .. -rw-rw-rw- 1 oracle dba 17661952 Mar 19 19:14 ctl_file_t643581595_s1675_p1 -rw-rw-rw- 1 oracle dba 17661952 Mar 19 19:14 ctl_file_t648930789_s1833_p1 -rw-rw-rw- 1 oracle dba 19693568 Jul 29 04:26 ctl_file_t661285579_s2098_p1 -rw-rw-rw- 1 oracle dba 19693568 Jul 30 2008 ctl_file_t661357792_s2100_p1 -rw-rw-rw- 1 oracle dba 19644416 Jul 30 2008 ctl_file_t661365316_s2103_p1 any help -- Your search - madunix - did not match any documents. -- Your search - madunix - did not match any documents.

3 2

vendors that can supply CentOS pre-installed
by Kevin C. Abbey 29 Jul '08

29 Jul '08

Hi, I am looking for a vendor that can supply CentOS pre-installed on hardware as follows. _____________________________ Phenom AMD X4 processor 8 Gb of memory 250Gb HD or better dual-layer DVD writer reasonably good graphics card _____________________________ Please reply with a link to a list of vendors or anactual list and their contact info. Thank you, Kevin -- Kevin C. Abbey System Administrator Rutgers University - BioMaPS Institute Piscataway, NJ 08854 Email: kabbey(a)biomaps.rutgers.edu

1 0

3ware 9650SE drivers for CentOS 5.0-EL kernel 2.6.18-8
by Gert Vandenreyt 29 Jul '08

29 Jul '08

The reason I'm using kernel 2.6.18 is that it is the only long term support version available in the LTSP project. I think after an update I will get kernel 2.6.19. The drivers available at the 3ware don't work, but I managed booting by compiling the driver myself in a vmware image. Grz, Gert.

1 0

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