Re: How do I get /dev/sdb1 back without rebooting?

Jean-David Beyer staggered into the Black Sun and said:
ToddAndMargo wrote:
You're running udev, right? When this thing disappears, what's in
dmesg that's related to the device? Are you sure it isn't appearing
as /dev/sdc1 or /dev/sda1?
I am running udevd. /dev/sda1,2,3 are my Raid controller and my "/",
swap, and "/export" partitions. They always mount as sdax.

As it transpires, the bad drive was not formated (I must have been
really tired). It showed up in dev as /dev/sdb, with no numbers.
Now it is formatted and mkfs.ext3'ed.

Which brings up a question: if the operator left the removable drive
out of the carriage, then rebooted, the removable drive will not show
up until the next reboot. Is the a way to rescan my SATA drives and
get me back my /dev/ sdb1 without rebooting?
I have a CD-ROM burner that is connected to a SCSI controller. If I
boot my machine with the CD-ROM burner turned on, it appears as
/dev/scd0.

If I boot my machine with the CD-ROM burner turned off, it does not
appear at all. And turning it on at that point does nothing.

SCSI is easy.

echo "scsi-add-single-device X Y Z W" > /proc/scsi/scsi, replacing X, Y,
Z, and W with the host, bus, ID, and LUN of the drive.

Perhaps your SATA drives act like my SCSI CD-ROM burner.

A SCSI CD-RW? That thing must be ancient.

SATA is different. It's not really SCSI, so the same technique may not
work properly. Some SATA devices may not even be hot-swappable. So, if
you plug the SATA device in and udev doesn't create a device node, check
dmesg for anything at all about the SCSI/SATA subsystems. Then
reproduce that info for us. Also, compare the dmesg output in that case
with the dmesg output from a successful case.

--
Something unpleasant is coming when men are anxious to tell the
truth. --Benjamin Disraeli
My blog and resume: http://crow202.dyndns.org:8080/wordpress/
Matt G|There is no Darkness in Eternity/But only Light too dim for us to see
.

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