Discuss July 2011

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315 participants
287 discussions

CentOS4 desktop has stopped recognizing removable media - haldaemon problem?
by Bart Schaefer 18 Feb '12

18 Feb '12

USB sticks and cameras used to pop right up on my desktop. Now they don't. I've checked the Gnome "Drives and Media Preferences" and nothing has changed -- I have "Mount removable media when inserted" etc. (Tried toggling it off and back on, no effect.) I've logged out and back in, even rebooted. /var/log/messages shows the devices are being recognized by udev: Jun 27 19:53:37 torch kernel: Attached scsi removable disk sde at scsi11, channel 0, id 0, lun 0 Jun 27 19:53:37 torch scsi.agent[13576]: disk at /devices/pci0000:00/0000:00:0b.1/usb1/1-5/1-5:1.0/host11/target11:0:0/11:0:0:0 Jun 27 19:53:37 torch udevd[1347]: udev done! Jun 27 19:53:47 torch udevd[1347]: udev done! However, that's followed by this: Jun 27 19:54:07 torch hald[5179]: Timed out waiting for hotplug event 699. Rebasing to 699 I restarted hald (service haldaemon restart) and it picked up one of the two devices I'd plugged in, but not the other.

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Centos v3.3 CD 2
by Luis-Miguel Astudillo 15 Nov '11

15 Nov '11

Sorry, I have been away for a while. has anyone fixed CD2 fotr CentOS v3.3 ? -- Luis

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Where are the CentOS 6 security updates?
by Lintula 09 Sep '11

09 Sep '11

The release announcement for CentOS-6.0 posted on CentOS-announce on Sun Jul 10 mentioned that: > Since upstream has a 6.1 version already released, we will be using a > Continous Release repository for 6.0 to bring all 6.1 and post 6.1 > security updates to all 6.0 users, till such time as CentOS-6.1 is > released itself. There will be more details about this posted within the > next 48 hours. I have not noticed anything said about this since, and I can't find any security updates. Firefox, for instance, is at 3.6.9. This is about a year old with many known security problems, so it really shouldn't be used. CentOS 5 and RHEL 6 have 3.6.18. Are there still no security updates available for CentOS 6, or have I just managed to completely miss how to access them?

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managing a rack full of centos servers
by John R Pierce 06 Sep '11

06 Sep '11

to date, I've done all my administration on a manual 1 at a time basis, as each system has been pretty much unique. its looking like I might need to setup a deployment of a dozen or 2 basically identical machines, all running pretty much the same sorts of stuff. I have zero experience with the sorts of management tools folks use to automate this type of configuration, both initial setup, and ongoing management (system updates, user application updates, configuration changes, etc). anyone care to suggest any such tools, maybe some real-world pros and cons? of course, being centos, I prefer FOSS tools. for various reasons, this environment likely will NOT be virtualized (although I may emulate a test setup with vmware). -- john r pierce N 37, W 122 santa cruz ca mid-left coast

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Scientific Linux 6.0 released (based on RHEL 6.0)
by Arun Khan 02 Sep '11

02 Sep '11

I know this is the CentOS list. However, as there has been some interest in CentOS 6.0 (RHEL 6), I thought I'd share the news here. Scientific Linux 6 is based on RHEL 6 with add-ons for scientific computing. FWIW, the Admin tools etc. are pretty much the same as in RHEL, so are the base packages. Read more at <http://www.scientificlinux.org/distributions/6x/60/> -- Arun Khan

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Intel 82599 driver?
by Lars Hecking 22 Aug '11

22 Aug '11

Which version of the ixgbe driver is included in 5.6? I went through all the RHEL5 release notes, but they only ever state that the driver was updated, not which devices was added. This device is not supported up to CentOS 5.5 (2.0.44-k2), but the latest driver from the Intel web site works fine (3.2.10). 05:00.0 Ethernet controller: Intel Corporation Unknown device 151c (rev 01) 05:00.0 0200: 8086:151c (rev 01) Subsystem: 8086:a03c Flags: bus master, fast devsel, latency 0, IRQ 170 Memory at de400000 (64-bit, non-prefetchable) [size=2M] I/O ports at ecc0 [size=32] Memory at de3f8000 (64-bit, non-prefetchable) [size=16K] Expansion ROM at de200000 [disabled] [size=1M] Capabilities: [40] Power Management version 3 Capabilities: [50] Message Signalled Interrupts: 64bit+ Queue=0/0 Enable- Capabilities: [70] MSI-X: Enable+ Mask- TabSize=64 Capabilities: [a0] Express Endpoint IRQ 0 Capabilities: [e0] Vital Product Data Capabilities: [100] Advanced Error Reporting Capabilities: [140] Device Serial Number 2c-cf-9a-ff-ff-21-1b-00 Capabilities: [150] Unknown (14) Capabilities: [160] Unknown (16)

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ext4, 4k sector alignment
by Les Mikesell 16 Aug '11

16 Aug '11

I've mentioned this problem before but put off doing anything about it and maybe now someone can suggest the best solution. I have a 3-member RAID1 set where one of the members is periodically swapped and rotated offsite. The filesystem contains a backuppc archive which has millions of hardlinks that make it impractical to copy with a file-oriented approach. The current filesystem is ext3 with one partition that uses the entire disk capacity (no lvm). It works as is, but... I'd like to use a laptop size drive for the swapped member and the only ones available that match the size have 4k sectors. I have swappable, trayless SATA bays available for both drive sizes. The problem is that with the current partition layout, the drive with 4k sectors takes more than a day to re-sync even though on read access the speed is a match for the full sized drives that sync in a few hours. My questions for any filesystem experts are: Is there a way to adjust the existing md partitions to get the right alignment for 4k sectors without having to do a file-oriented copy to new partitions? A resize + a dd copy to shift the position might be feasible time-wise if that would work. Is it worth converting to ext4? Is there a difference between doing this on 5.6 or 6.x? If I start over from scratch with 6.x, will the partitioning tools automatically align for 4k sector drives (with/without lvm?)? -- Les Mikesell lesmikesell(a)gmail.com

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how to assign program to run on dedicate CPU ?
by mcclnx mcc 06 Aug '11

06 Aug '11

We have CENTOS 5.X on DELL servers. I know on Windows environment I can use "imagecfg.exe" to assign program run on dedicate CPU. Can anyone tell me how to do this on LINUX? Thanks.

4 4

CentOS 6 system-config-bind missing?
by Emmett Culley 04 Aug '11

04 Aug '11

First system-config-network is not part of CentOS/RHEL 6, now I don't see system-config-bind either. Is there an alternative (GUI) way to manage the bind DNS server? Emmett

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EL6: Hard Disk upgrade howto?
by Benjamin Smith 03 Aug '11

03 Aug '11

I have a tested copy of EL6 that I would like to duplicate to a number of similar servers, but can't seem to find a sane howto on the subject. TLDP's "Hard disk upgrade howto" is embarrassingly antiquated: when's the last time you saw LILO? What's the recommended procedure for doing an HDD copy/upgrade from one disk to another? Is there a nice, detailed howto that explains this in detail? My set up is pretty straight forward. My partitions are all set up as simple partitions, with UUID's in /etc/fstab. I'm not using LVM or RAID. Any ideas? -Ben -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.

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Discuss July 2011