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34758 discussions

Motion Detecting Camera
by Leslie S Satenstein 01 Feb '14

01 Feb '14

mark wrote With the continuing annoyance from motion, my manager's asked me to go looking again for a video surveillance appliance: basically, a motion-detecting DVR and cameras. The big thing, of course, is a) price (this is a US federal gov't agency, and being civilian, money is *tight*, don't give me the libertarian/GOP line about how freely we spend, thankyouverymuch), b) it has to be on the network, and c) we need to be able to d/l to a server, and rm after we do that... and we want to script or cron job that. I was in Costco (USA warehouse store) and saw a Philips LED display, Camera, Recorder, that was motorized. The camera followed the movement across the front of it, and could snapshot to a memory chip. It was under $80.00 for the ensemble. The floor model worked well. If you do not require realtime recording to a hard disk, then this item may be a reasonable cost solution. Regards Leslie Mr. Leslie Satenstein SENT FROM MY OPEN SOURCE LINUX SYSTEM.

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OT hardware question
by m.roth＠5-cent.us 01 Feb '14

01 Feb '14

With the continuing annoyance from motion, my manager's asked me to go looking again for a video surveillance appliance: basically, a motion-detecting DVR and cameras. The big thing, of course, is a) price (this is a US federal gov't agency, and being civilian, money is *tight*, don't give me the libertarian/GOP line about how freely we spend, thankyouverymuch), b) it has to be on the network, and c) we need to be able to d/l to a server, and rm after we do that... and we want to script or cron job that. Right now, I'm looking into Zmodo, R-Tech and CIB security. Anyone have a) opinions on the quality of the hardware from any of those manufacturers (yeah, I know, they're just branded hardware), and/or whether we can do the ssh or telnet in to do what we need? *Extremely* frustrating, since they're all running embedded Linux, that so many say IE and Active X.... mark

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Are VMAC drivers stable?
by Jan Hugo Prins 31 Jan '14

31 Jan '14

Hi, I'm currently looking into the VMAC options that Keepalived had to offer. This all looks very nice, but now I heard that the VMAC driver in the linux kernel is not really stable if you are not on a 3.2 kernel or later. Can anyone here tell me some more about this? Is this really true? Should I wait with the VMAC options until Centos / RHEL are on a 3.2 kernel? Jan Hugo Prins

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Recent version of Latex
by Patrick Begou 31 Jan '14

31 Jan '14

I've moved most of my user's PCs from OpenSuse (11.x, unmaintainend now) to CentOS 6.4. On my old OpenSuse latex was "texlive-latex-2010" and current version on CTAN is texlive-2013. But on CentOS 6.4 I've only the old texlive-latex-2007 and several sty files available on my previous config are not available now and users cannot compile their previous documents. Is there a Yum repo from where I can install a more uptodate latex environment for CentOS6.4 ? Thanks Patrick -- =================================================================== | Equipe M.O.S.T. | | | Patrick BEGOU | mailto:Patrick.Begou@grenoble-inp.fr | | LEGI | | | BP 53 X | Tel 04 76 82 51 35 | | 38041 GRENOBLE CEDEX | Fax 04 76 82 52 71 | ===================================================================

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CentOS 6.5: NFS server crashes with list_add corruption errors
by Alessio Cecchi 31 Jan '14

31 Jan '14

Hi, I'm running CentOS 6.5 as NFS server (v3 and v4) and exporting Ext4 and XFS filesystem. After many months that all works fine today the server crash: Jan 30 09:46:13 qb-storage kernel: ------------[ cut here ]------------ Jan 30 09:46:13 qb-storage kernel: WARNING: at lib/list_debug.c:26 __list_add+0x6d/0xa0() (Not tainted) Jan 30 09:46:13 qb-storage kernel: Hardware name: PowerEdge Jan 30 09:46:13 qb-storage kernel: list_add corruption. next->prev should be prev (ffff8804366c5df0), but was ffff8803f611fa68. (next=ffff8803f611fa68). Jan 30 09:46:13 qb-storage kernel: Modules linked in: nfsd lockd nfs_acl auth_rpcgss sunrpc act_police cls_basic cls_flow cls_fw cls_u32 sch_tbf sch_prio sch_htb sch_hfsc sch_ingress sch_sfq bridge stp llc xt_statistic xt_time xt_connlimit xt_realm iptable_raw xt_comment xt_recent xt_policy ipt_ULOG ipt_REJECT ipt_REDIRECT ipt_NETMAP ipt_MASQUERADE ipt_ECN ipt_ecn ipt_CLUSTERIP ipt_ah ipt_addrtype xt_set ip_set nf_nat_tftp nf_nat_snmp_basic nf_conntrack_snmp nf_nat_sip nf_nat_pptp nf_nat_proto_gre nf_nat_irc nf_nat_h323 nf_nat_ftp nf_nat_amanda ts_kmp nf_conntrack_amanda nf_conntrack_sane nf_conntrack_tftp nf_conntrack_sip nf_conntrack_proto_udplite nf_conntrack_proto_sctp nf_conntrack_pptp nf_conntrack_proto_gre nf_conntrack_netlink nf_conntrack_netbios_ns nf_conntrack_broadcast nf_conntrack_irc nf_conntrack_h323 nf_conntrack_ftp xt_TPROXY nf_tproxy_core nf_defrag_ipv6 xt_tcpmss xt_pkttype xt_physdev xt_owner xt_NFQUEUE xt_NFLOG nfnetlink_log xt_multiport xt_MARK xt_mark xt_mac xt_limit xt_length xt_iprange xt_help Jan 30 09:46:13 qb-storage kernel: er xt_hashlimit xt_DSCP xt_dscp xt_dccp xt_conntrack xt_CONNMARK xt_connmark xt_CLASSIFY xt_AUDIT ipt_LOG xt_state iptable_nat nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_conntrack iptable_mangle nfnetlink iptable_filter ip_tables ipv6 xfs exportfs microcode power_meter iTCO_wdt iTCO_vendor_support dcdbas sg bnx2 lpc_ich mfd_core usb_storage ext4 jbd2 mbcache raid1 sr_mod cdrom sd_mod crc_t10dif ahci wmi dm_mirror dm_region_hash dm_log dm_mod [last unloaded: speedstep_lib] Jan 30 09:46:13 qb-storage kernel: Pid: 5759, comm: nfsd4 Not tainted 2.6.32-431.1.2.0.1.el6.x86_64 #1 Jan 30 09:46:13 qb-storage kernel: Call Trace: Jan 30 09:46:13 qb-storage kernel: [<ffffffff81071e27>] ? warn_slowpath_common+0x87/0xc0 Jan 30 09:46:13 qb-storage kernel: [<ffffffff81071f16>] ? warn_slowpath_fmt+0x46/0x50 Jan 30 09:46:13 qb-storage kernel: [<ffffffff81527920>] ? thread_return+0x4e/0x76e Jan 30 09:46:13 qb-storage kernel: [<ffffffff812944ed>] ? __list_add+0x6d/0xa0 Jan 30 09:46:13 qb-storage kernel: [<ffffffffa05bd60a>] ? laundromat_main+0x23a/0x3f0 [nfsd] Jan 30 09:46:13 qb-storage kernel: [<ffffffffa05bd3d0>] ? laundromat_main+0x0/0x3f0 [nfsd] Jan 30 09:46:13 qb-storage kernel: [<ffffffff81094d30>] ? worker_thread+0x170/0x2a0 Jan 30 09:46:13 qb-storage kernel: [<ffffffff8109b2b0>] ? autoremove_wake_function+0x0/0x40 Jan 30 09:46:13 qb-storage kernel: [<ffffffff81094bc0>] ? worker_thread+0x0/0x2a0 Jan 30 09:46:13 qb-storage kernel: [<ffffffff8109af06>] ? kthread+0x96/0xa0 Jan 30 09:46:13 qb-storage kernel: [<ffffffff8100c20a>] ? child_rip+0xa/0x20 Jan 30 09:46:13 qb-storage kernel: [<ffffffff8109ae70>] ? kthread+0x0/0xa0 Jan 30 09:46:13 qb-storage kernel: [<ffffffff8100c200>] ? child_rip+0x0/0x20 Jan 30 09:46:13 qb-storage kernel: ---[ end trace 13fa6e7d5ee2d668 ]--- and: |BUG: soft lockup - CPU#0 stuck for 67s! [nfsd4:3519] The error is exactly like this: https://access.redhat.com/site/solutions/166583 | Does anyone know if the problem is solved and how? Thanks -- Alessio Cecchi is: @ ILS -> http://www.linux.it/~alessice/ on LinkedIn -> http://www.linkedin.com/in/alessice Assistenza Sistemi GNU/Linux -> http://www.cecchi.biz Cloud Email Hosting -> http://www.qboxmail.com @ PLUG -> ex-Presidente, adesso senatore a vita, http://www.prato.linux.it

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samba vs LDAP - can I see LDAP logs, please?
by Dirk Olmes 31 Jan '14

31 Jan '14

Hi, I'm setting up Samba to authenticate against an LDAP Server. I have the basic setup running but authentication fails. I'm 95% sure that the LDAP config is still wrong but the guy I'm setting this up for doesn't really come up with the proper info. I have set log level = 5 and get tons of irrelevant info. What I'd like to see is the LDAP queries that the samba server issues. But I have no idea which magic switch will make this happen. My google-fu seems to be bad today, too as I cannot find any relevant info either. Help! -dirk

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Booting Software RAID
by Matt 31 Jan '14

31 Jan '14

I installed Centos 6.x 64 bit with the minimal ISO and used two disks in RAID 1 array. Filesystem Size Used Avail Use% Mounted on /dev/md2 97G 918M 91G 1% / tmpfs 16G 0 16G 0% /dev/shm /dev/md1 485M 54M 407M 12% /boot /dev/md3 3.4T 198M 3.2T 1% /vz Personalities : [raid1] md1 : active raid1 sda1[0] sdb1[1] 511936 blocks super 1.0 [2/2] [UU] md3 : active raid1 sda4[0] sdb4[1] 3672901440 blocks super 1.1 [2/2] [UU] bitmap: 0/28 pages [0KB], 65536KB chunk md2 : active raid1 sdb3[1] sda3[0] 102334336 blocks super 1.1 [2/2] [UU] bitmap: 0/1 pages [0KB], 65536KB chunk md0 : active raid1 sdb2[1] sda2[0] 131006336 blocks super 1.1 [2/2] [UU] My question is if sda one fails will it still boot on sdb? Did the install process write the boot sector on both disks or just sda? How do I check and if its not on sdb how do I copy it there?

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Single sign-on for CentOS-6
by James B. Byrne 30 Jan '14

30 Jan '14

Does anyone here use a Samba4 setup for single sign-on for MS_Win workstations and CentOS-6 boxes? Does anyone here use it for imap and/or smtp authentication? We are experimenting with replacing our existing Microsoft domain controllers with Samba4 based controllers and are contemplating moving all authentication for all our systems, Microsoft and CentOS based, over to Samba when, or if, this replacement successfully completes. Does anyone have any references for using CentOS with Samba domain controllers that they can recommend? I have found some but the few I have found tend to be Samba3 specific. -- *** 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

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Anyone using motion in 6.5?
by m.roth＠5-cent.us 30 Jan '14

30 Jan '14

Kernel 2.6.32-431.3.1.el6.x86_64. Anyone using motion, or in some other way using the gspca_zc3xx driver? Just in the last week or two, I've started getting error messages in my log Jan 30 16:53:20 <servername> kernel: gspca: frame overflow 33180 > 32768 The > 32k size varies, all 33xxx. mark

1 0

idea: "hybrid" iso images?
by Joseph Spenner 30 Jan '14

30 Jan '14

In order to create a bootable CentOS installation USB thumb drive, there are several steps one must follow. The process often involves using a Windows box, which can be kinda annoying. The Linux Mint distro has what they call a "Hybrid" iso image. (see: http://community.linuxmint.com/tutorial/view/744 ) This image can be written to a thumb drive and used for installation simply by performing: # dd /path/to/image.iso of=/dev/sdb (where /dev/sdb is the thumb drive device). This thumb drive can now be booted and used for installation. The same image.iso file can be written to CD/DVD to create the installation media as well. Is this a complicated ISO build process? I'm frequently installing to systems without CD/DVD drives, so this would come in handy. Thanks! Regards, Joseph Spenner ______________________________________________________________________ If life gives you lemons, keep them-- because hey.. free lemons. "♥ Sticker" fixer: http://microflush.org/stuff/stickers/heartFix.html

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