[dm-devel] [PATCH 0/7] patches: fix dm-raid1 race, bug 502927
Mikulas Patocka
mpatocka at redhat.com
Wed Nov 18 12:09:50 UTC 2009
Hi
Here is the serie of 7 patches to hold write bios on dm-raid1 until
dmeventd does its job. It fixes bug
https://bugzilla.redhat.com/show_bug.cgi?id=502927 . The first 6 patches
are preparatory, they just move the code around, the last patch does the
fix.
I tested the thing, I managed to reproduce the bug (by manually stopping
dmeventd with STOP signal, failing primary mirror leg and writing to the
device) and I also verified that the patches fix the bug.
For non-dmeventd operation, the current behavior is wrong and I just keep
it as wrong as it was. There is no easy fix. It is just assume that if the
user doesn't use dmeventd, he can't activate failed disks again.
Mikulas
More information about the dm-devel
mailing list