Re: Some troubles with grub with buster point release 10.8

[Carsten Aulbert]

On 11.02.21 09:53, Thomas Lange wrote:

On Thu, 11 Feb 2021 08:23:07 +0100, Carsten Aulbert 
<carsten.aulb...@aei.mpg.de> said:

     > I assume udevadm would return any of the valid device links and by-path
     > is always set, thus:

     > get_stable_devname() {
     >      _DEV="$1"
This does not work, because the order of links returned by udevadm
changes with every call.

get_stable_devname() {
    _DEV="$1"

    declare -a _RES


    for i in $(udevadm info -r --query=symlink "$_DEV")
    do
        if [[ "$i" =~ /by-id/scsi ]]
        then
            _RES[10]="$i"
        elif [[ "$i" =~ /by-id/ata ]]
        then
            _RES[20]="$i"
        elif [[ "$i" =~ /by-id/wwn ]]
        then
            _RES[30]="$i"
        elif [[ "$i" =~ /by-path/ ]]
        then
            _RES[99]="$i"
        fi
    done

    echo "${_RES[@]::1}"
}

get_stable_devname /dev/sda



C

That's what I wanted to do but I "optimized" the function too much and it does not work anymore... Thus, second try (not sure if I use the array correctly, but it seems to work on my test boxes, bonus point attempt to use BASIC style line numbers as index numbers to leave room for further possibilities ;-)): # prefer SCSI over ATA over WWN over path

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