MPT2SAS deadlocking on failed disk
Hi,
In stock Linux 2.6.35.7 kernel,
with mpt2sas driver connected to two disks (no raid at controler level), and Linux MD software RAID1,
if I hot unplug one of the disks,
instead of the failed disk beeing removed from the MD raid set, I get locked disk subsystem with all applications trying to write to the disks beeing locked. No kernel message related to disks, only to applications beeing locked.
This bug is probably not related specificaly to kernel 2.6.35.7 because I had not used LSI controlers for years.
Regards,
Hubert Tonneau
Quoted 6 lines · Hubert Tonneau
Hi,
In stock Linux 2.6.35.7 kernel,
with mpt2sas driver connected to two disks (no raid at controler level), and Linux MD software RAID1,
Quoted 8 lines
if I hot unplug one of the disks,
instead of the failed disk beeing removed from the MD raid set, I get locked disk subsystem with all applications trying to write to the disks beeing locked. No kernel message related to disks, only to applications beeing locked.This bug is probably not related specificaly to kernel 2.6.35.7 because I had not used LSI controlers for years.
FWIW I had horrible problems on 2.6.35.x (grml) with the mpt2sas driver (like running lilo would eject most disks in a running raid6).
All these problems went away with 2.6.36.