Gents, You really, really should not be hot plugging SCSI equipment or turning it off when plugged into a live SCSI chain. The way most SCSI device physical connections are wired, if the device is powered down, it risks over-heating other transistors in the SCSI chain. It's not the way they were designed to operate. There is also a chance of data corruption on the live side, due to the impedance at the interface being wrong with things switched off.
If I were you I would either go buy some USB kit, which is designed to be hot plugged, or put up with having it all SCSI devices on all the time. - Jill. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Friday, 25 November 2005 8:47 PM To: slug@slug.org.au Subject: Re: [SLUG] I hate udev! On Friday 25 November 2005 17:32, [EMAIL PROTECTED] wrote: > Ben Stanley wrote: > > So SCSI is not electrically designed for hot-plugging, and most > > pieces of SCSI equipment come with dire warnings against doing so... > > Agreed. However, I don't believe for a minute that all devices > connected to a scsi chain have to be on for the chain to be valid. > It's quite acceptable to turn a device connected to the chain off. > Removing the terminator / breaking the chain however, is a definite no > no. [snip] > P.S I gave in an rebooted the server during the night. I've now > recored the major and minor numbers of the device file so that if it > happens again I'll just mknod them. > > P.P.S thanks everyone for the advice pertaining to backups. Some food > for thought there. But do yourself a favor and do lsmod to see what <scsi> modules are loaded for the tape cause you will just get "No such device" if the mknod uses unloaded drivers. James -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html -- -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
