Show drive names next to their full serial number (and disk info)

ls -l /dev/disk/by-id |gawk 'match($11, /[a-z]{3}$/) && match($9, /^ata-/) { gsub("../", ""); print $11,"\t",$9 }' |sort
Scrap everything and use `gawk` to do all the magic, since it's like the future or something. gawk 'match($11, /[a-z]{3}$/) && match($9, /^ata-/) { gsub("../", ""); print $11,"\t",$9 }' Yank out only ata- lines that have a drive letter (ignore lines with partitions). Then strip ../../ and print the output. Yay awk. Be sure to see the alternatives as my initial command is listed there. This one is a revision of the original.
Sample Output
sda	ata-Samsung_SSD_840_PRO_Series_XXXXX
sdb	ata-WDC_WD30EFRX-68AX9N0_WD-XXXXX
sdc	ata-WDC_WD30EFRX-68EUZN0_WD-XXXXX
sdd	ata-WDC_WD30EFRX-68EUZN0_WD-XXXXX
sde	ata-WDC_WD30EFRX-68AX9N0_WD-XXXXX

2
By: lig0n
2015-05-18 15:42:33

3 Alternatives + Submit Alt


  • 5
    find /dev/disk/by-id -type l -printf "%l\t%f\n" | cut -b7- | sort
    sesom42 · 2015-05-18 17:20:39 4
  • As of this writing, this requires a fairly recent version of util-linux, but is much simpler than the previous alternatives. Basically, lsblk gives a nice, human readable interface to all the blkid stuff. (Of course, I wouldn't recommend this if you're going to be parsing the output.) This command takes all the fun out of the previous nifty pipelines, but I felt I ought to at least mention it as an alternative since it is the most practical.


    2
    lsblk -do name,model,serial
    hackerb9 · 2015-07-12 10:49:49 1
  • This is much easier to parse and do something else with (eg: automagically create ZFS vols) than anything else I've found. It also helps me keep track of which disks are which, for example, when I want to replace a disk, or image headers in different scenarios. Being able to match a disk to the kernels mapping of said drive the disks serial number is very helpful ls -l /dev/disk/by-id Normal `ls` command to list contents of /dev/disk/by-id grep -v "wwn-" Perform an inverse search - that is, only output non-matches to the pattern 'wwn-' egrep "[a-zA-Z]{3}$" A regex grep, looking for three letters and the end of a line (to filter out fluff) sed 's/\.\.\/\.\.\///' Utilize sed (stream editor) to remove all occurrences of "../../" sed -E 's/.*[0-9]{2}:[0-9]{2}\s//' Strip out all user and permission fluff. The -E option lets us use extended (modern) regex notation (larger control set) sed -E 's/->\ //' Strip out ascii arrows "-> " sort -k2 Sort the resulting information alphabetically, on column 2 (the disk letters) awk '{print $2,$1}' Swap the order of the columns so it's easier to read/utilize output from sed 's/\s/\t/' Replace the space between the two columns with a tab character, making the output more friendly For large ZFS pools, this made creating my vdevs immeasurably easy. By keeping track of which disks were in which slot (spreadsheet) via their serial numbers, I was able to then create my vols simply by copying and pasting the full output of the disk (not the letter) and pasting it into my command. Thereby allowing me to know exactly which disk, in which slot, was going into the vdev. Example command below. zpool create tank raidz2 -o ashift=12 ata-... ata-... ata-... ata-... ata-... ata-... Show Sample Output


    0
    ls -l /dev/disk/by-id |grep -v "wwn-" |egrep "[a-zA-Z]{3}$" |sed 's/\.\.\/\.\.\///' |sed -E 's/.*[0-9]{2}:[0-9]{2}\s//' |sed -E 's/->\ //' |sort -k2 |awk '{print $2,$1}' |sed 's/\s/\t/'
    lig0n · 2015-01-25 19:29:40 0

What Others Think

That seems very complicated. First, parsing the output of "ls" is risky. It depends on your locale. What you need is both ends of a symbolic link in a certain directory. find /dev/disk/by-id -name ata-\* -printf '%l %f\n' Find files called 'ata-*' in /dev/disk/by-id and print the link target %l (letter ell) and the filename %f Then we can tidy the output a little: ... | sed -e '/-part/d' -e 's!.*/!!' | sort delete any lines '-part', trim the leading ../ and sort the results The complete command: find /dev/disk/by-id -name ata-\* -printf '%l %f\n' | sed -e '/-part/d' -e 's!.*/!!' | sort
flatcap · 157 weeks and 5 days ago

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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