A cute CLI trick for emergencies
Aaron Konstam
akonstam at sbcglobal.net
Thu Dec 8 15:27:23 UTC 2011
On Thu, 2011-12-08 at 10:34 +1100, Cameron Simpson wrote:
> On 07Dec2011 10:44, Joe Zeff <joe at zeff.us> wrote:
> | On 12/07/2011 06:18 AM, Robert Nichols wrote:
> | > An issue with both the fdisk and blkid solutions is that they will spin
> | > up every sleeping drive on your system. Looking at the output from dmesg
> | > won't do that.
> |
> | I tried dmesg first but never found anything useful in it.
>
> There should be a sequence like the below when you plug in a USB drive:
>
> usb-storage: device found at 5
> usb-storage: waiting for device to settle before scanning
> scsi 9:0:0:0: Direct-Access WD My Book 1110 1030 PQ: 0
> ANSI: 4
> sd 9:0:0:0: Attached scsi generic sg7 type 0
> scsi 9:0:0:1: CD-ROM WD Virtual CD 1110 1030 PQ: 0
> ANSI: 4
> sd 9:0:0:0: [sdf] 1952151552 512-byte hardware sectors: (999 GB/930 GiB)
> sd 9:0:0:0: [sdf] Write Protect is off
> sd 9:0:0:0: [sdf] Mode Sense: 23 00 10 00
> sd 9:0:0:0: [sdf] Assuming drive cache: write through
> sr0: scsi3-mmc drive: 51x/51x caddy
> sr 9:0:0:1: Attached scsi CD-ROM sr0
> sr 9:0:0:1: Attached scsi generic sg8 type 5
> scsi 9:0:0:2: Enclosure WD SES Device 1030 PQ: 0
> ANSI: 4
> scsi 9:0:0:2: Attached scsi generic sg9 type 13
> sd 9:0:0:0: [sdf] Assuming drive cache: write through
> sdf: sdf1
> usb-storage: device scan complete
> sd 9:0:0:0: [sdf] Attached SCSI disk
>
> And thus the drive is /dev/sdf, with the data partition /dev/sdf1.
>
> You may need to scroll back a bit if a lot of stuff is going on in
> dmesg.
>
Great, but could the displaying of the information be made more obscure?
--
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The luck that is ordained for you will be coveted by others.
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Aaron Konstam telephone: (210) 656-0355 e-mail: akonstam at sbcglobal.net
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