while my system was doing its monthly check (debian) i bumped into
soft-lockups in the raid5 code. i must mention this is a rather mature
system, the disks are 3.5 years old at this point... so i'm not surprised
that the check will find some bad sectors which will take the
device/driver a while to read/correct.
all SMART events in this log are on disks which are part of /dev/md4 which
is a raid5. the controller is a 3ware 7508, the disks are seagate
apparently no errors propagated all the way up to raid5, but based on the
SMART events i'm pretty sure several sectors took a long time to finish
being read and were probably corrected by the drive itself.
this is debian kernel image 2.6.24-1-686 version 2.6.24-4 which contains