[?] When does the device name (sda, adb, ...) change?

[theone]

Hello,

 

For a plugin I am working on:

 

Does anyone know (definitely) when the device name (sda, adb, ...) given to HDD/CD-DVD ROMs devices change?

 

is it only when connecting it to a different SATA port? Or can it change for other reasons?

 

Thanks

 

[NAS]

Once a device is connected it will hold that alias. If a a new device is connected it will get the next alias.

 

However you cannot guarantee it will be the same alias each time obviously. Also if a drive drops and comes up it may get a new alias.

 

sd* is not a good way to address things far better to look at more modern alternatives such as UUID etc

[theone]

Once a device is connected it will hold that alias. If a a new device is connected it will get the next alias.

 

However you cannot guarantee it will be the same alias each time obviously. Also if a drive drops and comes up it may get a new alias.

 

sd* is not a good way to address things far better to look at more modern alternatives such as UUID etc

 

For my plugin I need to know when a drive has physically been connected to a different SATA port - is this possible?

 

Edit:

 

I will try use lsscsi.

 

/dev/disk/by-path does not show all devices for some reason.

[sparklyballs]

try lsscsi

[NAS]

Once a device is connected it will hold that alias. If a a new device is connected it will get the next alias.

 

However you cannot guarantee it will be the same alias each time obviously. Also if a drive drops and comes up it may get a new alias.

 

sd* is not a good way to address things far better to look at more modern alternatives such as UUID etc

 

For my plugin I need to know when a drive has physically been connected to a different SATA port - is this possible?

 

Edit:

 

I will try use lsscsi.

 

/dev/disk/by-path does not show all devices for some reason.

 

Good tip sparky. Curious about by-path though wonder why that is not defitnitve.

 

Also udev can be your friend it is super powerful