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SPF

by Jamie Guinan

Hi, Are any of you admins out there running SPF, or something similar? http://www.openspf.org/ How well does it work for you? Today I started getting a large number of "undeliverable" responses due to spammers forging my email address in the From: address. Wondering if SPF is worth the trouble to set up. I'm using postfix, btw. Thanks, -Jamie

April 1, 2008

Sr. Linux Admin Opportunity at Staples

by Carey, Joseph

Good Morning, I wanted to make the members aware of a current role I am looking to fill for my IS department. This is an immediate need, interviews starting ASAP. Senior Level Linux Admin that has 5+ years of systems admin experience and 3+ with Red Hat and/or SuSE. This is a permanent position that offers competitive salary, bonus, stock, benefits, and more... Best Regards, Joe Carey Corporate Recruiter STAPLES HOME OFFICE View our jobs @ www.staples.com/jobs

April 1, 2008

Re: [Wlug] Missing /dev files

by Stephen Daukas

On 4/1/08, Aaron Haviland <orion(a)parsed.net> wrote: [...] > I don't know what caused this in the first place...transient lightning > bolts? spurrious darktrons? I'd go with "super massive darktrons!" ;-) Steve

April 1, 2008

Re: [Wlug] Missing /dev files

by Aaron Haviland

vze284qe(a)verizon.net wrote, on Mar 31, 2008 at 19:27 EDT: > So I shut down the computer - power off, unplug, remove battery (it's a > laptop) and waited a minute. I reinstalled the battery, plugged it in > and booted up the usual kernel, et voila...the /dev/sdb* files > reappeared!! All looks good! Even Linux has some strangeness I guess. > > I don't know what caused this in the first place...transient lightning > bolts? spurrious darktrons? I've got a flash card reader that, if it's got a card in it when the computer is turned on, will forever fail to recognise that it's got media. However, if I insert the media after Linux has recognised and reset the device, all is good. Perhaps you had a situation like that? I blame BIOS weirdness, really. -- Aaron Haviland 34 Wayne Ave, Dudley, MA

April 1, 2008

Re: [Wlug] Missing /dev files

by Jamie Guinan

On Mon, 31 Mar 2008, vze284qe(a)verizon.net wrote: > On Sun, 30 Mar 2008 21:25:28 -0400 > Mike Frysinger <vapier(a)gentoo.org> wrote: > > > On Sunday 30 March 2008, Chuck Noyes wrote: > > > I had mounted an external usb drive /dev/sdb2 onto /media/sdb2 and > > > was coping several mega-bytes of files to it when I got some I/O > > > errors. Then I noticed that all of my /dev/sdb* files were missing > > > from /dev. > > > > > > When I do an ls -al /dev, all the files are there except the sdb > > > files. > > > > > > How can I get these back? I'm running Ubuntu 'gutsy' > > > 2.6.20-16-generic. > > > > the device nodes only exist as the kernel thinks the device exists. > > if you got I/O errors and then the device nodes disappeared, the > > kernel probably detached the device. so even if you made the device > > nodes by hand, it wouldnt matter as the kernel still wouldnt think > > the device was attached. review your `dmesg` and if need be, > > unplug/plug in the USB device. -mike > > Well....this is really strange! > > I booted up another kernel a 2.6.18, and I noticed that the /dev/sdb* > files were still missing! All of the other /dev files were there. > > So I shut down the computer - power off, unplug, remove battery (it's a > laptop) and waited a minute. I reinstalled the battery, plugged it in > and booted up the usual kernel, et voila...the /dev/sdb* files > reappeared!! All looks good! Even Linux has some strangeness I guess. > > I don't know what caused this in the first place...transient lightning > bolts? spurrious darktrons? A few thoughts... Is the external USB drive self-powered? Did you power-cycle it at any point? The device itself might have gotten wedged. It might have shown up as /dev/sda* on some of those interim reboots, depending on whether there were any other usb storage devices present. "lsusb", and the tail command Eric suggested, are your friends. What is sda currently? [ these work on 2.6.23, not sure about earlier kernels ] $ cat /sys/block/sda/device/model $ cat /sys/block/sdb/device/model Anyway, glad to hear it at least works again. -Jamie

March 31, 2008

Re: [Wlug] Missing /dev files

by vze284qe＠verizon.net

On Sun, 30 Mar 2008 21:25:28 -0400 Mike Frysinger <vapier(a)gentoo.org> wrote: > On Sunday 30 March 2008, Chuck Noyes wrote: > > I had mounted an external usb drive /dev/sdb2 onto /media/sdb2 and > > was coping several mega-bytes of files to it when I got some I/O > > errors. Then I noticed that all of my /dev/sdb* files were missing > > from /dev. > > > > When I do an ls -al /dev, all the files are there except the sdb > > files. > > > > How can I get these back? I'm running Ubuntu 'gutsy' > > 2.6.20-16-generic. > > the device nodes only exist as the kernel thinks the device exists. > if you got I/O errors and then the device nodes disappeared, the > kernel probably detached the device. so even if you made the device > nodes by hand, it wouldnt matter as the kernel still wouldnt think > the device was attached. review your `dmesg` and if need be, > unplug/plug in the USB device. -mike Well....this is really strange! I booted up another kernel a 2.6.18, and I noticed that the /dev/sdb* files were still missing! All of the other /dev files were there. So I shut down the computer - power off, unplug, remove battery (it's a laptop) and waited a minute. I reinstalled the battery, plugged it in and booted up the usual kernel, et voila...the /dev/sdb* files reappeared!! All looks good! Even Linux has some strangeness I guess. I don't know what caused this in the first place...transient lightning bolts? spurrious darktrons? Anyway, it's working. Thanks to all who offered help. -Chuck -- -Chuck

March 31, 2008

Re: [Wlug] Missing /dev files

by Tim Keller

Is this device at the end of a USB hub??? I ask because I run into this issue when I plug my PSP into a usb hub connexted to my FC8 box. If I plug directly in I don't see this issue... Just an idea... Thanks, Tim. On 3/30/08, Chuck Noyes <vze284qe(a)verizon.net> wrote: > On Sun, 30 Mar 2008 21:25:28 -0400 > Mike Frysinger <vapier(a)gentoo.org> wrote: > > > On Sunday 30 March 2008, Chuck Noyes wrote: > > > I had mounted an external usb drive /dev/sdb2 onto /media/sdb2 and > > > was coping several mega-bytes of files to it when I got some I/O > > > errors. Then I noticed that all of my /dev/sdb* files were missing > > > from /dev. > > > > > > When I do an ls -al /dev, all the files are there except the sdb > > > files. > > > > > > How can I get these back? I'm running Ubuntu 'gutsy' > > > 2.6.20-16-generic. > > > > the device nodes only exist as the kernel thinks the device exists. > > if you got I/O errors and then the device nodes disappeared, the > > kernel probably detached the device. so even if you made the device > > nodes by hand, it wouldnt matter as the kernel still wouldnt think > > the device was attached. review your `dmesg` and if need be, > > unplug/plug in the USB device. -mike > > dmesg shows many entries like this: > > new high speed USB device using ehci_hcd and address 10 > usb 5-3: device descriptor read/8, error -110 > usb 5-3: device descriptor read/8, error -110 > > Googling this message doesn't seem to provide much help. > > I have unpluged the device and even rebooted the computer. However, > after a reboot, the /dev/sdb* files are still missing. > > -- > -Chuck > _______________________________________________ > Wlug mailing list > Wlug(a)mail.wlug.org > http://mail.wlug.org/mailman/listinfo/wlug > -- I am leary of the allegiances of any politician who refers to their constituents as "consumers".

March 31, 2008

Re: [Wlug] Missing /dev files

by Eric Martin

On Mon, Mar 31, 2008 at 12:40 AM, Karl Hiramoto <karl(a)hiramoto.org> wrote: > Chuck Noyes wrote: > > On Sun, 30 Mar 2008 21:25:28 -0400 > > Mike Frysinger <vapier(a)gentoo.org> wrote: > > > > > > dmesg shows many entries like this: > > > > new high speed USB device using ehci_hcd and address 10 > > usb 5-3: device descriptor read/8, error -110 > > usb 5-3: device descriptor read/8, error -110 > > > > Googling this message doesn't seem to provide much help. > > > > I have unpluged the device and even rebooted the computer. However, > > after a reboot, the /dev/sdb* files are still missing. > > > > > The device files should be created by udev automatically when you > pluging the device, or boot the PC.. When you un/plug the device you > should see some info in dmesg. Perhaps you have some kind of error > occurring. you could try rmmod "ehci_hcd" to try using USB 1.1 instead > of usb 2.0. You could also try plugging it into a different hub or usb > port on the PC. > I'd run a tail -f on /var/log/messages (or wherever your kernel messages go) so you can see what's happening as you plug / unplug the device. In Gentoo, the default for syslog-ng is to have it default log to tty12 so you can just flip over there. -- HTH Eric

March 31, 2008

Re: [Wlug] Missing /dev files

by Karl Hiramoto

Chuck Noyes wrote: > On Sun, 30 Mar 2008 21:25:28 -0400 > Mike Frysinger <vapier(a)gentoo.org> wrote: > > >> On Sunday 30 March 2008, Chuck Noyes wrote: >> >>> I had mounted an external usb drive /dev/sdb2 onto /media/sdb2 and >>> was coping several mega-bytes of files to it when I got some I/O >>> errors. Then I noticed that all of my /dev/sdb* files were missing >>> from /dev. >>> >>> When I do an ls -al /dev, all the files are there except the sdb >>> files. >>> >>> How can I get these back? I'm running Ubuntu 'gutsy' >>> 2.6.20-16-generic. >>> >> the device nodes only exist as the kernel thinks the device exists. >> if you got I/O errors and then the device nodes disappeared, the >> kernel probably detached the device. so even if you made the device >> nodes by hand, it wouldnt matter as the kernel still wouldnt think >> the device was attached. review your `dmesg` and if need be, >> unplug/plug in the USB device. -mike >> > > dmesg shows many entries like this: > > new high speed USB device using ehci_hcd and address 10 > usb 5-3: device descriptor read/8, error -110 > usb 5-3: device descriptor read/8, error -110 > > Googling this message doesn't seem to provide much help. > > I have unpluged the device and even rebooted the computer. However, > after a reboot, the /dev/sdb* files are still missing. > > The device files should be created by udev automatically when you pluging the device, or boot the PC.. When you un/plug the device you should see some info in dmesg. Perhaps you have some kind of error occurring. you could try rmmod "ehci_hcd" to try using USB 1.1 instead of usb 2.0. You could also try plugging it into a different hub or usb port on the PC. -- -- Karl Hiramoto http://karl.hiramoto.org/

March 31, 2008

Re: [Wlug] Missing /dev files

by Chuck Noyes

On Sun, 30 Mar 2008 21:25:28 -0400 Mike Frysinger <vapier(a)gentoo.org> wrote: > On Sunday 30 March 2008, Chuck Noyes wrote: > > I had mounted an external usb drive /dev/sdb2 onto /media/sdb2 and > > was coping several mega-bytes of files to it when I got some I/O > > errors. Then I noticed that all of my /dev/sdb* files were missing > > from /dev. > > > > When I do an ls -al /dev, all the files are there except the sdb > > files. > > > > How can I get these back? I'm running Ubuntu 'gutsy' > > 2.6.20-16-generic. > > the device nodes only exist as the kernel thinks the device exists. > if you got I/O errors and then the device nodes disappeared, the > kernel probably detached the device. so even if you made the device > nodes by hand, it wouldnt matter as the kernel still wouldnt think > the device was attached. review your `dmesg` and if need be, > unplug/plug in the USB device. -mike dmesg shows many entries like this: new high speed USB device using ehci_hcd and address 10 usb 5-3: device descriptor read/8, error -110 usb 5-3: device descriptor read/8, error -110 Googling this message doesn't seem to provide much help. I have unpluged the device and even rebooted the computer. However, after a reboot, the /dev/sdb* files are still missing. -- -Chuck

March 31, 2008