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Re: hot swap eSATA



 Dan Ritter wrote: 
> umount all the partitions; hdparm -Y /dev/sdx to lock the drive safely; 
> swap the disks; 
> hdparm -z /dev/sdx to reread the partition table; 
> mount the partitions. 

I tried this out today with an eSATA drive, and for some reason the 
kernel didn't see the drive, even though it was connected during boot. 
Hard to say what the cause might be. I noticed the eSATA cable didn't 
seem to fully seat on the controller card. Seems to be a common problem 
with eSATA cables having large shoulders preventing them from fitting 
into tight spaces. 

What happens if the drive wasn't connected on bootup and thus no 
/dev/sdX device gets created? Should there be some udev magic to create 
the device, if the ATA driver supports hot swap? I couldn't find an 
hdparm option or another command that would force the ATA bus to be probed. 

  -Tom 

-- 
Tom Metro 
Venture Logic, Newton, MA, USA 
"Enterprise solutions through open source." 
Professional Profile: http://tmetro.venturelogic.com/

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