On Wed, Nov 19, 2008 at 10:44 AM, Robert LeBlanc <robert AT leblancnet DOT us> 
wrote:
> We have a Overland Storage Neo 8000 with two FC LTO3 drives, and almost
> every time the SD is rebooted, the drives swap places. Drive0 will be
> /dev/st0 and Drive1 will be /dev/st1, then sometimes after reboot Drive0
> will be /dev/st1 and Drive1 will be /dev/st0. It doesn't happen all the time
> and I thought udev would take care of keeping the drive the same across
> reboots like the Ethernet cards. Does anyone have some wisdom that they can
> impart to me on this problem?
>

You can write a udev rule to lock the drives down. I wrote one awhile
back to keep the changer device the same.

dev6 ~ # cat /etc/udev/rules.d/55-bacula.rules
SUBSYSTEM=="scsi",ATTRS{vendor}=="EXABYTE*",ATTRS{type}=="8",
SYMLINK+="autochanger1 changer"


BTW, Is this swapping of drives causing any real problems?


John

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