Comments for One John

Comment on FireFox bug with onreadystatechange by ^

Sun, 11 Dec 2011 05:26:16 +0000

Thanks!

Comment on The Server service hung on starting. by Derrick

Derrick — Fri, 02 Dec 2011 12:21:06 +0000

Life saver! Still works Nov 2011! Sure enough our Lexmark got hung up, and all hell broke loose with the server. Looks like the Lexmark/Print Spooler/Lanman(Server) service got hosed. Following your method worked flawlessly.

Comment on The Server service hung on starting. by steve -- different one

steve -- different one — Fri, 27 May 2011 21:13:15 +0000

Thanks kindly — searched all over for an answer, kicked myself when i found this! Lexmark drivers = problems.
much appreciated!

Comment on iSCSI on a Dell MD3000i by john

john — Tue, 14 Dec 2010 03:25:35 +0000

Since you made your comment I have done some more investigation. It seems that
multipath-tools 0.4.8 was built for an old version of sysfs and was
looking in the wrong location for the vendor and model (and some other
stuff). Upgrading to 0.4.9-r1 fixes it. In portage 0.4.9-r1 is still
masked so if you are using Gentoo you will need to ~ keyword it for your
arch in /etc/portage/package.keywords.

Here is the new output showing the vendor and model. Also note the
pretty new ASCII art lines:
test1 (360026b90004b6c4a00000d334ce13319) dm-4 DELL,MD3000i
size=700G features=’3 queue_if_no_path pg_init_retries 50′ hwhandler=’1
rdac’ wp=rw
|-+- policy=’round-robin 0′ prio=6 status=active
| |- 16:0:0:0 sdb 8:16 active ready running
| `- 15:0:0:0 sdd 8:48 active ready running
`-+- policy=’round-robin 0′ prio=1 status=enabled
|- 17:0:0:0 sdc 8:32 active ghost running
`- 18:0:0:0 sde 8:64 active ghost running

Comment on iSCSI on a Dell MD3000i by john

john — Wed, 03 Nov 2010 23:50:57 +0000

Chris.
Here is one of mine:
databasepv (360026b90004b6c4a0000088e4cc82414) dm-3 ,
[size=1.5T][features=0][hwhandler=0]
\_ round-robin 0 [prio=6][active]
\_ #:#:#:# sdd 68:48 [active][ready]
\_ #:#:#:# sdf 68:80 [active][ready]
\_ round-robin 0 [prio=0][enabled]
\_ #:#:#:# sdc 68:32 [active][ghost]
\_ #:#:#:# sde 68:64 [active][ghost]

So I do not have a device name either. I suspect that better SANs might push those name, but have not tried one yet so I don’t know for sure.

With LVM installed, I have sometimes run into issues with iSCSI trying to shut down before LVM does, but LVM keeping a lock on the volume so iSCSI is not able to shut down properly. Then LVM can’t flush its buffers, and the system hangs on shutdown or reboot. The only solution I’ve found is to issue a “dmsetup remove vg” on all volume groups on the iSCSI lun before shutting down. In Gentoo, that can go in /etc/init.d/local.stop.

Comment on iSCSI on a Dell MD3000i by chris

chris — Wed, 03 Nov 2010 17:49:23 +0000

Hi, thanks for this article it really helped me to get things started.
I still have some problems with my multipath configuration. Could you send me the output of your multipath -ll ? Mine looks like:
md3000i_file_service_1 (36001c23000b970ea000003654cb403ec) dm-0 ,
[size=1.4T][features=0][hwhandler=0]
\_ round-robin 0 [prio=0][active]
\_ #:#:#:# sdf 8:80 [active][undef]
\_ #:#:#:# sde 8:64 [active][undef]
\_ round-robin 0 [prio=0][enabled]
\_ #:#:#:# sdc 8:32 [active][undef]
\_ #:#:#:# sdd 8:48 [active][undef]

I was wondering if it is normal that there is no device name in the end of the first line, like I saw in different other posts. Also I am not sure if all the udev rules work as expected, because I have lvm2 installed as well.

Comment on IE vs FireFox: Using JavaScript to modify attributes by marcob

marcob — Fri, 08 Oct 2010 15:35:27 +0000

I also run into these kind of stupid and painstaking problems with IE.
className vs class, or Tbody that sometimes is mandatory sometimes not, and all this stupid stuf..
What’s highly disturbing is that sometimes it works and sometimes it don’t. I also wonder who is the dumb idiot that’s running IE development teams who did develop such a product with so much disturbing random behavior.

Comment on Denyhosts and other ssh security by john

john — Sun, 25 Jul 2010 15:42:36 +0000

Thanks for the additional security measure Baron. Here is a guide for enabling port knocking under Gentoo

Comment on Denyhosts and other ssh security by Baron

Baron — Sun, 25 Jul 2010 13:11:56 +0000

I have seen a couple of sites that use port knocking. If you don’t do the secret knock on some random port, the server won’t accept a connection attempt to the port you want. For example, to log in to SSH on some servers I have to do something like

nc -z 8957

And then port 22 will open to me.

Comment on The Server service hung on starting. by dom

dom — Fri, 02 Jul 2010 10:15:57 +0000

hope this works for me, driving me nuts