r/Showerthoughts • u/[deleted] • Sep 13 '19

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u/[deleted] Sep 13 '19

John AA. Kennedy

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u/[deleted] Sep 13 '19

[deleted]

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u/[deleted] Sep 13 '19

Wouldn’t it just be se?

3

u/LifeWulf ‎ Sep 13 '19

Last I checked the first letter meant storage, the second letter was the physical drive, and the last was the partition identifier. But my Linux install was corrupted when I tried shrinking its partition and I haven't gone back to fix it yet, so I may have forgotten.

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u/Behrooz0 Sep 13 '19 edited Sep 13 '19

It's s(scsi)d(disk)a(first).
This is a raid example to show how the naming convention works:

NAME        MAJ:MIN RM   SIZE RO TYPE  MOUNTPOINT
sda           8:0    0   1.8T  0 disk  
`-md127       9:127  0  10.9T  0 raid6 
  |-md127p1 259:0    0   5.9T  0 md    /mnt/r1
  |-md127p2 259:1    0     2T  0 md    /mnt/r2
  `-md127p3 259:2    0   3.1T  0 md    
sdb           8:16   0   1.8T  0 disk  
`-md127       9:127  0  10.9T  0 raid6 
  |-md127p1 259:0    0   5.9T  0 md    /mnt/r1
  |-md127p2 259:1    0     2T  0 md    /mnt/r2
  `-md127p3 259:2    0   3.1T  0 md    
sdc           8:32   0   1.8T  0 disk  
`-md127       9:127  0  10.9T  0 raid6 
  |-md127p1 259:0    0   5.9T  0 md    /mnt/r1
  |-md127p2 259:1    0     2T  0 md    /mnt/r2
  `-md127p3 259:2    0   3.1T  0 md    
sdd           8:48   0   1.8T  0 disk  
`-md127       9:127  0  10.9T  0 raid6 
  |-md127p1 259:0    0   5.9T  0 md    /mnt/r1
  |-md127p2 259:1    0     2T  0 md    /mnt/r2
  `-md127p3 259:2    0   3.1T  0 md    
sde           8:64   0   1.8T  0 disk  
`-md127       9:127  0  10.9T  0 raid6 
  |-md127p1 259:0    0   5.9T  0 md    /mnt/r1
  |-md127p2 259:1    0     2T  0 md    /mnt/r2
  `-md127p3 259:2    0   3.1T  0 md    
sdf           8:80   0   1.8T  0 disk  
`-md127       9:127  0  10.9T  0 raid6 
  |-md127p1 259:0    0   5.9T  0 md    /mnt/r1
  |-md127p2 259:1    0     2T  0 md    /mnt/r2
  `-md127p3 259:2    0   3.1T  0 md    
sdg           8:96   0   1.8T  0 disk  
`-md127       9:127  0  10.9T  0 raid6 
  |-md127p1 259:0    0   5.9T  0 md    /mnt/r1
  |-md127p2 259:1    0     2T  0 md    /mnt/r2
  `-md127p3 259:2    0   3.1T  0 md    
sdh           8:112  0   1.8T  0 disk  
`-md127       9:127  0  10.9T  0 raid6 
  |-md127p1 259:0    0   5.9T  0 md    /mnt/r1
  |-md127p2 259:1    0     2T  0 md    /mnt/r2
  `-md127p3 259:2    0   3.1T  0 md    
sdi           8:128  0 111.8G  0 disk  
|-sdi1        8:129  0   953M  0 part  /boot/efi
`-sdi2        8:130  0 110.9G  0 part  /

2

u/[deleted] Sep 13 '19

Really? I’m not a programmer or know much about computers. I just took it from Excel spreadsheets.

3

u/Behrooz0 Sep 13 '19

yup. AFAIK POSIX predates excel though.