Yes, it sounds like that is the initial trigger. So somewhere between
3.16 and 4.4 the kernel got better in declaring which disk drives could
be hot-plugged. And the AHCI and (likely) the fakeraid modes potentially
support to hot-plug disks (you could have externally accessible drive
bays). Sometimes the BIOS allows to change the hot-plug support but not
all). If you had that BIOS option that would be a work-around for you.
But probably dmraid should not care about a drive being removable. It
probably was meant to protect against probing USB sticks and/or cdroms.
I don't know for sure. As said on some of the threads you link I would
rather not think of this as a kernel bug. It rather supports the flag
more correctly.
So if something needs to change it probably is dmraid. Unfortunately
that change might have odd consequences in other cases. So I would like
to be careful there.
** Also affects: dmraid (Ubuntu)
Importance: Undecided
Status: New
** Changed in: dmraid (Ubuntu)
Importance: Undecided => Medium
** Changed in: dmraid (Ubuntu)
Status: New => Confirmed
** Changed in: linux (Ubuntu)
Status: Confirmed => Invalid
** Changed in: dmraid (Ubuntu)
Assignee: (unassigned) => Stefan Bader (smb)
** Also affects: dmraid (Ubuntu Xenial)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Xenial)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu Xenial)
Status: New => Invalid
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https://bugs.launchpad.net/bugs/1611277
Title:
Kernel Shipped With Ubuntu 16.04.1 Cannot Recognize fakeRaid
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