TODO (as of noflushd version 2.6)
* Per-device bdflush parameters. [kernel]
For saner handling of multiple disks a kernel patch is needed that allows
for separate bdflush parameters on each device.
* Improve web site.
Duh! Doomed to be a never ending work in progress, see
http://noflushd.sourceforge.net). Contributions welcome.
* SCSI spinup. [kernel]
The Linux IDE driver has the nice property of trying to spin up a disk
if an access fails. SCSI leaves it to the user instead. We cannot trap
reads or writes that haven't yet completed from userland though (at least
not without sard). Furthermore, we cannot issue a spinup ioctl that will
'overtake' the first rw request on the request queue. This, however,
would be needed to insure that the first rw request on a spun down disk
doesn't fail. Mimicking the IDE behaviour with a kernel patch for SCSI
looks like the better option, but then the SCSI midlayer is full of
pitfalls. (Think of request queues with a maximum length of one request.
* Better IPC. [noflushd, long term (3.0)]
The current way of changing noflushd behaviour at runtime sucks. Some
advanced form of IPC would be much preferred, eg. a user app that
communicates with the noflushd daemon via a local socket/named pipe
to update and query its parameters.
* Backoff scheme on zero spindown times. [noflushd, 2.x]
When we detect that a disk spins back up immediately, increase its timeout
value to prevent too many bogus spinup cycles when things go severely wrong.
(Suggested by Joey Hess.) [Shouldn't be too difficult to implement. The
tricky part is finding a clever heuristic that modifies the timeout sanely
in all cases. I've spent some time on this issue, and haven't come up with
a satisfying solution yet. Suggestions welcome!]
* LSB compliant init skript. [noflushd, 2.x]
Hopefully this finally provides a standard way to install init skripts and
rc symlinks on all distributions.