This will get you a mapping from the by-id to the by-path device names:
for file in /dev/disk/by-id/*; do
echo ${file/*\/} \
$(ls -l /dev/disk/by-path |
grep $(ls -l $file |
awk '{print $11}') |
awk '{print $9}')
done
...which should give you a start on writing a script to edit /etc/fstab.
Look out for the multiple ways of specifying by-id and by-path devices in
fstab, though. And it would probably make sense to create a backup in case
the script misinterprets something.
On Fri, Jan 15, 2010 at 1:57 PM, Ray Waters <ray.wat...@opensolutions.com>wrote:
> I went ahead and started over and re-installed LINUX under my z/VM 540
> system.
>
> SUSE Linux Enterprise Server 10 SP2 (s390x) - Kernel 2.6.16.60-0.21
>
> I see I still need to change /dev/disk/by-id to /dev/disk/by-path, so I
> don't get hosed again.
>
> How is the best way to change my "by-path" to "by-id"?
>
>
> LINUXEKM:/dev/disk # ls by-id
> ccw-0X0150
> ccw-0X0150-part1
> ccw-0X0151
> ccw-0X0151-part1
> ccw-0X0152
> ccw-0X0152-part1
> ccw-0X0153
> ccw-0X0153-part1
> ccw-HTC.65000000028194.0100.70
> ccw-HTC.65000000028194.0100.70-part1
> ccw-HTC.65000000028194.0100.70.00000006000000370000000000000000
> ccw-HTC.65000000028194.0100.70.00000006000000370000000000000000-part1
> ccw-HTC.65000000028194.0100.70.0000003800000d0a0000000000000000
> ccw-HTC.65000000028194.0100.70.0000003800000d0a0000000000000000-part1
> ccw-HTC.65000000028194.0300.4c
> ccw-HTC.65000000028194.0300.4c-part1
> ccw-HTC.65000000028194.0300.4c.0000000100000d0a0000000000000000
> ccw-HTC.65000000028194.0300.4c.0000000100000d0a0000000000000000-part1
> ccw-HTC.65000000028194.0800.3a
> ccw-HTC.65000000028194.0800.3a-part1
> ccw-HTC.65000000028194.0800.3a.0000000100000d0a0000000000000000
> ccw-HTC.65000000028194.0800.3a.0000000100000d0a0000000000000000-part1
> LINUXEKM:/dev/disk #
>
>
> LINUXEKM:/dev/disk # ls by-path
> ccw-0.0.0150 ccw-0.0.0151-part1 ccw-0.0.0153
> ccw-0.0.0160-part1
> ccw-0.0.0150-part1 ccw-0.0.0152 ccw-0.0.0153-part1
> ccw-0.0.0151 ccw-0.0.0152-part1 ccw-0.0.0160
> LINUXEKM:/dev/disk #
>
>
>
> LINUXEKM:/proc # cat cmdline
> root=/dev/disk/by-id/ccw-HTC.65000000028194.0800.3a.0000000100000d0a0000000000000000-part1
> TERM=dumb BOOT_IMAGE=0
> LINUXEKM:/proc #
>
>
>
>
> LINUXEKM:/proc # cd dasd
> LINUXEKM:/proc/dasd # ls -l
> total 0
> -rw-r--r-- 1 root root 0 Jan 11 15:18 devices
> -rw-r--r-- 1 root root 0 Jan 11 15:18 statistics
> linux-etljzvm:/proc/dasd # cat devices
> 0.0.0150(ECKD) at ( 94: 0) is dasda : active at blocksize: 4096,
> 9000 blocks, 35 MB
> 0.0.0151(ECKD) at ( 94: 4) is dasdb : active at blocksize: 4096,
> 59094 0 blocks, 2308 MB
> 0.0.0152(ECKD) at ( 94: 8) is dasdc : active at blocksize: 4096,
> 60084 0 blocks, 2347 MB
> 0.0.0153(ECKD) at ( 94: 12) is dasdd : active at blocksize: 4096,
> 60084 0 blocks, 2347 MB
> 0.0.0160(FBA ) at ( 94: 16) is dasde : active at blocksize: 512,
> 200000 blocks, 97 MB
>
> Ray Waters
>
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