linux - 从两个输入文件创建 udev 规则文件

Question

我正在寻找一种为 Linux 创建 Oracle ASM udev 规则文件的解决方案。我有两个输入文件。 file1 包含 ASM 磁盘要求信息，file2 包含磁盘信息。

例如file1第2行显示DATA12需要3 block 磁盘(DATA12_01,DATA12_02,DATA12_03)，每 block 128G。 file2 包含所有磁盘信息和大小。我需要根据这两个输入文件创建如下所示的输出文件。

猫文件1

Count - size - name
3 - 128 GB DATA12
1 - 128 GB TEMP02
2 - 4 GB ARCH03
2 - 1 GB ARCH04
1 - 3 GB  ORAC01

cat 文件2

UUID                                        Size
360060e80166ef70000016ef700006700           128.00 GiB
360060e80166ef70000016ef700006701           128.00 GiB
360060e80166ef70000016ef700006702           128.00 GiB
360060e80166ef70000016ef700006703           128.00 GiB
360060e80166ef70000016ef700006730             4.00 GiB
360060e80166ef70000016ef700006731             4.00 GiB
360060e80166ef70000016ef700006733             1.00 GiB
360060e80166ef70000016ef700006734             1.00 GiB
360060e80166ef70000016ef700006735             3.00 GiB

输出文件

ACTION=="add|change", ENV{DM_NAME}=="360060e80166ef70000016ef700006700", SYMLINK+="udevlinks/DATA12_01"

ACTION=="add|change", ENV{DM_NAME}=="360060e80166ef70000016ef700006701", SYMLINK+="udevlinks/DATA12_02"

ACTION=="add|change", ENV{DM_NAME}=="360060e80166ef70000016ef700006702", SYMLINK+="udevlinks/DATA12_03"

ACTION=="add|change", ENV{DM_NAME}=="360060e80166ef70000016ef700006703", SYMLINK+="udevlinks/TEMP02_01"

ACTION=="add|change", ENV{DM_NAME}=="360060e80166ef70000016ef700006730", SYMLINK+="udevlinks/ARCH03_01"

ACTION=="add|change", ENV{DM_NAME}=="360060e80166ef70000016ef700006731", SYMLINK+="udevlinks/ARCH03_02"

ACTION=="add|change", ENV{DM_NAME}=="360060e80166ef70000016ef700006733", SYMLINK+="udevlinks/ARCH04_01"

ACTION=="add|change", ENV{DM_NAME}=="360060e80166ef70000016ef700006734", SYMLINK+="udevlinks/ARCH04_02"

ACTION=="add|change", ENV{DM_NAME}=="360060e80166ef70000016ef700006735", SYMLINK+="udevlinks/ORAC01_01"

Answer 1

这是 AWK 中的一个:

$ cat > test.awk
BEGIN {FS="([.]| +)"}   # field separator do deal with "." in file2 128.00
FNR==1 {next}           # skip header
NR==FNR {               # read available disks to pool from file1
    for(i=1; i<=$1; i++) 
        a[$5"_"0i]=$3   # name and set the disks into pool
    next} 
{
    for(i in a) {       # look for right sized disk
        if(a[i]==$2) {  # when found, print...
            printf "%s%s%s%s%s", "ACTION==\"add|change\", ENV{DM_NAME}==\"",$1,"\",\"SYMLINK+=\"udevlinks/",i,"\"\n"
            delete a[i] # ... and remove from pool
            break
        }
    } # if no device was found:
    old=len; len=length(a); if(old==len) {print "No device found for ",$0}
}
$ awk -f test.awk file1 file2
ACTION=="add|change", ENV{DM_NAME}=="360060e80166ef70000016ef700006700","SYMLINK+="udevlinks/DATA12_01"
ACTION=="add|change", ENV{DM_NAME}=="360060e80166ef70000016ef700006701","SYMLINK+="udevlinks/DATA12_02"
...
No device found for  THIS_IS_AN_EXAMPLE_OF_MISSING_DISK           666.00 GiB

由于使用 for(i in a) 进行磁盘搜索，无法保证从池中读取磁盘的顺序。