Note ALL MODULES MUST BE RECOMPILED
make the kernel aware that there are smaller units of scheduling than the
process. (but only allow one thread per process at this time).
This is functionally equivalent to teh previousl -current except
that there is a thread associated with each process.
Sorry john! (your next MFC will be a doosie!)
Reviewed by: peter@freebsd.org, dillon@freebsd.org
X-MFC after: ha ha ha ha
Requested by: bde
Add retryerrors keyword.
vinum_scandisk: Print a different message if an inadvertent start
command did not find any additional drives. The previous message "no
drives found" confused and worried many people.
MFS:
vinum_open: Recognize Mylex devices as storage devices.
not yet been caught), don't save the config with a null drive
name (which causes the drive to be renamed "plex" on the next
start), put in the text "*invalid*" instead.
This is damage control, not a fix.
Experienced by: peter
Break some long format strings so that they fit in style(9)-sized
lines.
Remove some "outdentation".
This should eliminate one case of foot shooting .
vinum_scandisk: If a drive in the partition table is downed, free it.
This duplicates code for the compatibility partition, which for some
reason was omitted here.
Requested by: Bernd Walter <ticso@cicely8.cicely.de>
Cor Bosman <cor@xs4all.net>
Kai Storbeck <kai@xs4all.net>
Joe Greco <jgreco@ns.sol.net>
Add support for Compaq SMART-2 RAID (idad) as storage
device for Vinum subdisks.
Reported by: Aaron Hill <hillaa@hotmail.com>
Add support for AMD RAID controllers as "disks".
Requested-by: Marius Bendiksen <mbendiks@eunet.no>
Remove potential panic when attempting to open non-existent drivers.
init_drive: Return error codes correctly. Previously it would
occasionally return 0. The error was redetected
elsewhere, but this was causing a number of confusing
error messages.
not gone yet.
format_config: print correct text when a volume has a preferred plex.
This is still broken, but not quite as badly.
Reported-by: Phil Regnauld <regnauld@ftf.net>
Change a rather silly comment.
(Much of this done by script)
Move B_ORDERED flag to b_ioflags and call it BIO_ORDERED.
Move b_pblkno and b_iodone_chain to struct bio while we transition, they
will be obsoleted once bio structs chain/stack.
Add bio_queue field for struct bio aware disksort.
Address a lot of stylistic issues brought up by bde.
substitute BUF_WRITE(foo) for VOP_BWRITE(foo->b_vp, foo)
substitute BUF_STRATEGY(foo) for VOP_STRATEGY(foo->b_vp, foo)
This patch is machine generated except for the ccd.c and buf.h parts.
field in struct buf: b_iocmd. The b_iocmd is enforced to have
exactly one bit set.
B_WRITE was bogusly defined as zero giving rise to obvious coding
mistakes.
Also eliminate the redundant struct buf flag B_CALL, it can just
as efficiently be done by comparing b_iodone to NULL.
Should you get a panic or drop into the debugger, complaining about
"b_iocmd", don't continue. It is likely to write on your disk
where it should have been reading.
This change is a step in the direction towards a stackable BIO capability.
A lot of this patch were machine generated (Thanks to style(9) compliance!)
Vinum users: Greg has not had time to test this yet, be careful.
vn_open. This is necessary in order to be able to open drives before
the root file system is mounted. This also involves restructuring the
drive struct, which no longer contains a vnode pointer. Instead,
open_drive sets an open flag. It's a horrible kludge, and I'll gladly
borrow a Danish axe and hack it in little pieces when devfs comes.
read_drive, write_drive, drive_io_done: Replace with driveio. The
function names are now macros.
driveio: Fix horrible, embarrassing breakage which was the reason why
read_drive and write_drive existed in the first place.
Code-torn-to-shreds-by: dillon
format_config: Don't save config of objects in referenced state. They
get rebuilt automatically.
Change checks for striped or RAID-5 plexes to a macro 'isstriped',
which now also includes RAID-4.
Change checks for RAID-5 plexes to a macro 'isparity', which now also
includes RAID-4.
Replace the preprocessor variable names BDEV_MAJOR and CDEV_MAJOR with
VINUM_BDEV_MAJOR and VINUM_CDEV_MAJOR respectively.
vinum_scandisk: Don't free memory twice on error, once is enough.
Approved-by: jkh
on alpha.
Submitted-by: Bernd Walter <ticso@cicely.de>
Remove #include of vm/vm_zone.h.
Submitted-by: Someone, I'm sure, but I seem to have lost the
attribution. Sorry.
Get the check for disk devices correct, and return an appropriate
message if the check fails.
and then doing it itself, resulting in a panic downed drives.
Sleuth-work-by: Christopher Masto <chris@netmonger.net>
Remove dummy function initsd, which is now (implemented) in
vinumrevive.c
vinum_scandisk: Check that a drive is up before reading from it. This
is probably excessive paranoia.
ourselves. This breaks a vicious circle which caused
vinum to dereference a null vp if device nodes were
missing.
Reported-by: Brad Chisholm <sasblc@unx.sas.com>
Alec Wolman <wolman@cs.washington.edu>
check_drive: Don't take a drive down if it's only referenced.
read_drive: Remove unused variable.
format_config: code preening.
vinum_scandisk: If we find a partition in the first pass over a drive,
note the fact so we don't grab the compatibility partition as well.
Submitted-by: peter
Introduce BUF_STRATEGY(struct buf *, int flag) macro, and use it throughout.
please see comment in sys/conf.h about the flag argument.
Remove strategy argument from all the diskslice/label/bad144
implementations, it should be found from the dev_t.
Remove bogus and unused strategy1 routines.
Remove open/close arguments from dssize(). Pick them up from dev_t.
Remove unused and unfinished setgeom support from diskslice/label/bad144 code.
Tidy other comments.
open_drive: don't call set_drive_state if we decide to take it down.
This could help avoid some race conditions with the daemon.
init_drive: don't set the drive down, we'll let close_locked_drive do
that.
close_locked_drive: set drive state to down without calling
set_drive_state. This could help avoid some race conditions with the
daemon.
driveio: remove the function, it wasn't being used.
get_volume_label: remove volume dependencies so that we can return a
label for plexes and subdisks as well. What a kludge.
- %q -> %ll.
Fixed nearby errors not reported by gcc -Wformat on i386's:
- don't assume that the promotion of [u_]int64_t is [u_]quad_t.
- don't use signed formats for unsigned args.
will only accept partitions of type 'vinum'.
format_config: Use the new %q format option in kvprintf, thus getting
rid of some of the filthiest code I've written in a long time. Also
remove the lltoa() function.
With-great-thanks-to: peter
format_config: Accept the fact that a subdisk might not be attached to
a plex, and save the config correctly.
vinum_scandisk: Scan all slices on a drive with a Microsoft partition
table. Only look at the compatibility slice if nothing was found in
the Microsoft slices.
This change removes a frequently employed method of shooting
yourself in the foot: people would decide that the Vinum drives
belonged on their own slice, and they wouldn't be able to start the
subsystem after a reboot. Documentation updates to follow.
Correct race condition between caller and daemon.
Tripped-over-by: Zach Heilig <zach@uffdaonline.net>
Bernd Walter <ticso@cicely.de>
Niels Chr. Bank-Pedersen <ncbp@bank-pedersen.dk>
lockmgr locks. This commit should be functionally equivalent to the old
semantics. That is, all buffer locking is done with LK_EXCLUSIVE
requests. Changes to take advantage of LK_SHARED and LK_RECURSIVE will
be done in future commits.
Made a new (inline) function devsw(dev_t dev) and substituted it.
Changed to the BDEV variant to this format as well: bdevsw(dev_t dev)
DEVFS will eventually benefit from this change too.
Virtualize bdevsw[] from cdevsw. bdevsw() is now an (inline)
function.
Join CDEV_MODULE and BDEV_MODULE to DEV_MODULE (please pay attention
to the order of the cmaj/bmaj arguments!)
Join CDEV_DRIVER_MODULE and BDEV_DRIVER_MODULE to DEV_DRIVER_MODULE
(ditto!)
(Next step will be to convert all bdev dev_t's to cdev dev_t's
before they get to do any damage^H^H^H^H^H^Hwork in the kernel.)
If a drive has gone down and has dirty buffers associated with it,
we'll get a panic when we try to vn_close it. Check for this
situation and discard any buffers; they're toast anyway.
Only complain about usage count if DEBUG_WARNINGS is set.
check_drive:
Change parameter name from drivename to devicename.
Get the check for a referenced drive right.
If the partition isn't a vinum drive, set the last error to ENODEV.
vinum_scandisk:
Change parameter name from drivename [] to devicename [].
Fix a potential drive deadlock when saving config to a non-existent
drive.
Add debug calls to catch occasional deadlocks on drives. The problem
(above) is probably gone, but the debug checks remain for a while.
