I wasn't mdadm'ing, so i usually use the fs uuid. if you want the device
uuid, it'll need to be that guy and not using ID_FS_UUID. but it's pretty
basic down at that level, so as long as you keep your layers right, you
should be able to find the thing you want to bind to.
On Sun, May 18, 2025 at 8:05 PM James Mcphee <
jmcphe@gmail.com> wrote:
> I've run into things similar and it depends on what you're running. If
> it's udev, make a rule in /etc/udev/rules.d/numbered-rule.rules with
> SUBSYSTEM=="block", ACTION=="add", ENV{ID_FS_UUID}==
> "123e4567-e89b-12d3-a456-426614174000", NAME="sda"
> or whatever. Dunno if this does what you want, but you can pretty much do
> something like this to handle that kinda thing if you're running udev.
>
> On Sat, May 17, 2025 at 10:20 PM der.hans via PLUG-discuss <
> plug-discuss@lists.phxlinux.org> wrote:
>
>> Am 17. May, 2025 schwätzte Ryan Petris via PLUG-discuss so:
>>
>> > You can't, unfortunately. The only thing in /dev you can technically
>> > rename are network interfaces; the rest you can only add symlinks for,
>> > which is what for instance /dev/disk/by-partlabel/* is.
>>
>> A shame, I like long path names :)
>>
>> > Why do you care what mdadm shows for device names anyway? If you're
>> > concerned that it will pick up the wrong disk on reboot, it won't
>> > because internally it's using its own identifiers to find the right
>> > drives, and will snow you whatever /dev/sd* it happens to end up
>>
>> It picked up the wrong devices when powering the drive bay down and up
>> again. mdadm was showing and trying to use the orginal sd names rather
>> than the newly assigned names.
>>
>> I will experiment more with mdadm. It's been a while since I used it, so
>> was expecting some reacquaintance exercises to be necessary.
>>
>> ciao,
>>
>> der.hans
>>
>> > on when running mdadm commands. If you want to figure out which
>> > /dev/sd* device belongs to your disk label, you can just run `readlink
>> > /dev/disk/by-partlabel/raid...`.
>>
>>
>> >
>> > On Sat, May 17, 2025, at 6:46 PM, der.hans via PLUG-discuss wrote:
>> >> moin moin,
>> >>
>> >> I'm using a USB JBOD enclosure to build a RAID set.
>> >>
>> >> Restarting the enclosure ends up with the drives on new names, e.g.
>> sda,
>> >> sdb and sdc come back sdd, sde and sdf.
>> >>
>> >> I added labels to my disk partitions and was hoping to use them, e.g.
>> >> /dev/disk/by-partlabel/raid{0,1,2}, but mdadm turned them back to
>> >> /dev/sd{d,e,f} names as members of the array
>> >>
>> >> Anyone know how I can either get /dev/sd names not to change for
>> removable
>> >> media or get mdadm to accept the names I want to use?
>> >>
>> >> I'd rather the latter.
>> >>
>> >> ciao,
>> >>
>> >> der.hans
>> >> --
>> >> # https://www.SpiralArray.com https://www.PhxLinux.org
>> >> # <arclight> Delicious red tape, like a Twizzler but flat. And
>> adhesive.
>> >> ---------------------------------------------------
>> >> PLUG-discuss mailing list: PLUG-discuss@lists.phxlinux.org
>> >> To subscribe, unsubscribe, or to change your mail settings:
>> >> https://lists.phxlinux.org/mailman/listinfo/plug-discuss
>> >>
>> >
>>
>> --
>> # https://www.SpiralArray.com https://www.PhxLinux.org
>> # "Luckily, this is a comic book, for which no idea is too complex."
>> # -- Larry Gonick from The Cartoon History of the United
>> States---------------------------------------------------
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>>
>
>
> --
> James McPhee
> jmcphe@gmail.com
>
--
James McPhee
jmcphe@gmail.com
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