Commit Graph

567 Commits

Author SHA1 Message Date
Poul-Henning Kamp
d98777f8db Remove the now unused hardcoded g_post_event() event support. 2003-04-23 20:25:33 +00:00
Poul-Henning Kamp
9ab3ea7841 Turn EV_NEW_PROVIDER into a g_call_me() event. 2003-04-23 20:16:13 +00:00
Poul-Henning Kamp
f2e9a09494 Convert EV_SPOILED event to use g_call_me(). 2003-04-23 20:06:38 +00:00
Poul-Henning Kamp
9972896c00 Turn the hardwired NEW_CLASS event into a g_call_me() event. 2003-04-23 19:34:38 +00:00
Poul-Henning Kamp
b5cba4167f Move the shutdown eventhandler stuff to a more logical place. 2003-04-23 19:15:27 +00:00
Poul-Henning Kamp
bf9ab27afb Implement CONFIG_GEOM verbs "write label" and "write bootcode". 2003-04-23 08:23:01 +00:00
Poul-Henning Kamp
ca3d750e73 Introduce gctl_get_paraml() which gets a parameter only if it has the
right length.
2003-04-23 08:03:47 +00:00
Poul-Henning Kamp
fb9483af54 Make gctl_error() take printfline varargs. 2003-04-23 07:50:01 +00:00
Poul-Henning Kamp
668ae29c71 Remove unused event pointers in object structures.
Remove KASSERTS which checked that they were unused.
2003-04-23 06:54:44 +00:00
Poul-Henning Kamp
b874183561 Change the locking so that the _modify function is called with topology
held.

The only place where we want to not hold topology is when we read
(or write) the label to disk: in the case of a disk error with a
long recovery time, holding topology would prevent open/close of
any disk device.
2003-04-22 21:29:58 +00:00
Poul-Henning Kamp
b09d72daf8 We don't need to have a slice->start() function. 2003-04-22 21:24:37 +00:00
Poul-Henning Kamp
d3a1a13766 Do not mandate that slicers have a private ->start(), they may not need
one.  KASSERT() that they have one if G_SLICE_HOT_START is used.
2003-04-22 21:19:17 +00:00
Poul-Henning Kamp
ea9ab6bed2 Implement handling of CONFIG_GEOM OAM request. 2003-04-22 21:01:46 +00:00
Poul-Henning Kamp
2c30da600e Add "CONFIG_GEOM" operation to the OAM API. 2003-04-22 21:00:49 +00:00
Poul-Henning Kamp
70b4ddbb09 Collapse meta arguments into regular arguments, the distinction is
more trouble than it is worth.
2003-04-22 19:42:05 +00:00
Poul-Henning Kamp
989afda211 Implement a hotspot for the sunlabel.
This means that you can no longer trash your opened partitions by writing to
the sunlabel through another partition.  This is similar to the semantics
implemented for BSD labels.
2003-04-21 20:14:36 +00:00
Poul-Henning Kamp
666223979c Update GEOM::SUN to use the decoding functions in geom_sunlabel_enc.c
and #defines from sys/sun_disklabel.h.
2003-04-21 19:54:11 +00:00
Poul-Henning Kamp
9bd6be665d Use #defines from <sys/sun_disklabel.h> instead of private ones. 2003-04-21 19:42:36 +00:00
Poul-Henning Kamp
941a2f8cb5 Functions to encode and decode Sun Microsystems disk partitioning data
structures.

Mostly by:	jake
2003-04-21 18:41:12 +00:00
Poul-Henning Kamp
7220a9e779 Make more of the "hotspot" stuff generic:
Give the class a way to specify the necessary action for read/delete/write:
ALLOW, DENY, START or CALL.

Update geom_bsd to use this.
2003-04-19 10:14:39 +00:00
Poul-Henning Kamp
183a45f65e Create a dedicated structure for holding hotspot information rather than
using slice structures for it.
2003-04-19 10:00:22 +00:00
Poul-Henning Kamp
c72e7314c2 These two files fell off during my previous commit: put the encoding
decoding functions for struct disklabel in a separate .c file.
2003-04-17 08:41:08 +00:00
Poul-Henning Kamp
7715475960 More correct patch: Only call biofinish if we have not already sent
any children down the mesh.
2003-04-14 08:49:54 +00:00
Poul-Henning Kamp
2f912fc976 Call biofinish() also when we get a malloc() failure. 2003-04-14 08:08:17 +00:00
Poul-Henning Kamp
3924ad705e Time has run from the "run GEOM in userland" harness, and the new regression
test is built to test GEOM as running in the kernel.

This commit is basically "unifdef -D_KERNEL" to remove the mainly #include
related code to support the userland-harness.
2003-04-13 09:02:06 +00:00
Poul-Henning Kamp
537d9274dc If we hit access ahead of a spoil event, we should have negative
delta access-counts and proceed.
2003-04-12 17:04:34 +00:00
Poul-Henning Kamp
2b454c0ae5 Fix a bug which resulted in orphanization getting confused every now
and then.
2003-04-12 16:36:19 +00:00
Poul-Henning Kamp
5f5a9022b2 Retire the experimental bio_taskqueue(), it was not quite as usable as
hoped.  It can be revived from here, should other drivers be able to
use it.
2003-04-12 09:13:01 +00:00
Poul-Henning Kamp
0d3e96e39c Retire the "frontstuff" record keeping, it was no match for the
in-band meta-data of BSD labels and a more complex solution will be needed.
2003-04-12 08:41:26 +00:00
Poul-Henning Kamp
6e03422af0 Move the functions for encoding decoding struct dos_partition into
a separate .c file so they can be used from userland as well.
2003-04-12 08:34:40 +00:00
Poul-Henning Kamp
cf83284fe3 Only be verbose if (bootverbose) 2003-04-09 13:52:40 +00:00
Poul-Henning Kamp
551e52efb8 With the magic sequence checks removed this class is downright dangerous
to have in your kernel since it indiscriminately attaches to anything
it is offered with a range of bogus partitions.

Stop this from happening by rejecting any label with negative numbers in
it.
2003-04-09 13:08:36 +00:00
Poul-Henning Kamp
13ac082b26 Correctly split cyl/sects bytes when we print them. 2003-04-09 09:21:33 +00:00
Poul-Henning Kamp
2692cc08db Style issue: use do {...} while(0); for multi-exit section. 2003-04-09 08:56:26 +00:00
Poul-Henning Kamp
63f253709f Retire the DIOCGMBR ioctl before anybody starts to use it. 2003-04-03 19:37:40 +00:00
Poul-Henning Kamp
4eba52a2d2 Remove all references to BIO_SETATTR. We will not be using it. 2003-04-03 19:19:36 +00:00
Poul-Henning Kamp
ab0ff32ea1 Update the initializer for GEOM_MBREXT, I overlooked it previously. 2003-04-03 19:05:03 +00:00
Poul-Henning Kamp
4c763c77dc Add #define for DOSPTYP_PMBR, and use it. 2003-04-03 18:55:16 +00:00
Poul-Henning Kamp
76c4109ebb #include <sys/endian.h> as needed. 2003-04-03 11:56:10 +00:00
Poul-Henning Kamp
4d3651f456 Remove geom_enc.c, a superset of these functions are now available in
<sys/endian.h>
2003-04-03 11:40:06 +00:00
Poul-Henning Kamp
d8cb8a5137 Use <sys/endian.h> instead of geom_enc.c for endianess-agnostification. 2003-04-03 11:36:53 +00:00
Poul-Henning Kamp
82db45a5af Use sys/endian.h instead of geom_enc.c for endian-agnostfication. 2003-04-03 11:33:51 +00:00
Poul-Henning Kamp
68f156409e Make sure we don't ignore error codes. 2003-04-03 11:19:24 +00:00
Poul-Henning Kamp
316aed030e Add handling for cancelled events in the g_call_me() methods. 2003-04-02 21:10:04 +00:00
Poul-Henning Kamp
afcbcfaed0 Change events to have an array of "void *" references, and give the
event posting functions varargs to fill these.

Attribute g_call_me() to appropriate g_geom's where necessary.

Add a flag argument to g_call_me() methods which will be used to signal
cancellation of events in the future.

This commit should be a no-op.
2003-04-02 20:41:18 +00:00
Poul-Henning Kamp
8f6da0e4ac Only orphan things if the open/close actually succeeded. 2003-04-02 13:10:40 +00:00
Poul-Henning Kamp
c7e1925c7c Properly handle races between open/close and orphan.
KASSERT the race between close and strategy, it is an error in the upper
echelons if this happens,

Add XXX: comment explaining why the ioctl/orphan race is not closed.
2003-04-02 13:09:50 +00:00
Poul-Henning Kamp
4752f7570a Include <geom/geom_disk.h> not <sys/disk.h> 2003-04-01 18:57:14 +00:00
Poul-Henning Kamp
891619a66d Use bioq_flush() to drain a bio queue with a specific error code.
Retain the mistake of not updating the devstat API for now.

Spell bioq_disksort() consistently with the remaining bioq_*().

#include <geom/geom_disk.h> where this is more appropriate.
2003-04-01 15:06:26 +00:00
Poul-Henning Kamp
7c79beb3ce Start to split the GEOM/diskdriver specific bits into geom/geom_disk.h 2003-04-01 13:19:14 +00:00
Poul-Henning Kamp
4a1e273c48 Remove the old config interface, the new OAM is sufficiently functional
now.
2003-04-01 07:33:56 +00:00
Poul-Henning Kamp
dfb99a70d8 Remove the old config interface now that the new OAM is functional. 2003-04-01 07:33:17 +00:00
Poul-Henning Kamp
afa2a5aab7 Remove some debugging in the new OAM[*] and add a debug flag for other
parts of it.

[*] I've been asked what "OAM" means:  It's an acronym used in the
telecom industry, "Operations And Maintenance", and there it covers
anything from a single unlabeled led on the frontpanel the the full
nightmare of CMIP for SS7.
2003-03-31 18:35:37 +00:00
Poul-Henning Kamp
376ceb799f Fix a bug in the ENOMEM pacing code which probably made it panic systems
after a lot of ENOMEM errors.
2003-03-29 22:34:37 +00:00
Poul-Henning Kamp
29c331bfaa Add create_geom and destroy_geom methods. 2003-03-29 22:14:21 +00:00
Poul-Henning Kamp
63728c47e8 Run a revision on the OAM api.
Use prefix gctl_ systematically.
Add flag with access perms for each argument.
Add ro/rw versions of argument building functions.
General cleanup.
2003-03-27 14:35:00 +00:00
Poul-Henning Kamp
5e52756d9d Check return value of g_call_me() 2003-03-27 14:32:52 +00:00
Poul-Henning Kamp
897af91bac g_class_by_name() was unused too. 2003-03-25 09:11:17 +00:00
Poul-Henning Kamp
77b63fb4b1 Remove unuse g_insert_geom(). 2003-03-25 09:07:35 +00:00
Poul-Henning Kamp
0b94902f81 Forward compatibility: NULL check the passed in meta argument. 2003-03-25 09:02:41 +00:00
Poul-Henning Kamp
c138fec0b5 Premptively change initializations of struct g_class to use C99
sparse struct initializations before we extend the struct with
new OAM related member functions.
2003-03-24 19:30:15 +00:00
Poul-Henning Kamp
d49d7ca591 Turn /dev/geom.ctl from a GEOM class into a plain character device driver
instead, it will never see a disk-I/O transaction, so this is a lot simpler.
2003-03-24 13:37:15 +00:00
Poul-Henning Kamp
fbf79df3b8 Save a lock: Grab the stall_events SX lock exclusively so it also serialize
OAM reqests.
2003-03-24 13:35:06 +00:00
Poul-Henning Kamp
dddc28bfe0 Introduce g_cancel_events() and use it a couple of places where it makes
sense.
2003-03-23 23:01:40 +00:00
Poul-Henning Kamp
d943f1b0b9 Introduce an SX lock which allows us to stall event processing
during OAM operations.
2003-03-23 21:58:09 +00:00
Poul-Henning Kamp
757ed3b591 I forgot the evil ioctl census scripts: #include <geom/geom_ctl.h> 2003-03-23 11:05:44 +00:00
Poul-Henning Kamp
3117e54484 Marshalling stuff for OAM API. 2003-03-23 10:16:14 +00:00
Poul-Henning Kamp
679c4aa68c A note about which #include files may be used where. 2003-03-23 10:08:13 +00:00
Poul-Henning Kamp
62d03b91ec Start leaking the AOM api into the tree. 2003-03-23 10:07:44 +00:00
Poul-Henning Kamp
7da1ebfd74 Mitigate deadlock situation pending a more complete solution. 2003-03-21 22:05:33 +00:00
Poul-Henning Kamp
e24cbd9017 Retire the GEOM private statistics code and use devstat instead. 2003-03-18 09:42:33 +00:00
Poul-Henning Kamp
b4b138c27f Including <sys/stdint.h> is (almost?) universally only to be able to use
%j in printfs, so put a newsted include in <sys/systm.h> where the printf
prototype lives and save everybody else the trouble.
2003-03-18 08:45:25 +00:00
Poul-Henning Kamp
20d2026b4e #ifdef notyet a bit of code which needs not yet committed refcounting to
work correctly.
2003-03-16 16:29:04 +00:00
Poul-Henning Kamp
81876757ec Use devstat_{start,end}_transaction_bio().
Remember to set bio_resid correctly first.
2003-03-15 10:49:26 +00:00
Poul-Henning Kamp
e582990901 If we run out of consumers while orphaning them, and the provider's geom
is withering, destroy the provider when done.

This was exposed by the recent change to geom_dev's orphaning logic.
2003-03-10 23:41:41 +00:00
Poul-Henning Kamp
e60dce6b42 Fix yet another fallout of our M_* song and dance. 2003-03-10 23:34:12 +00:00
Poul-Henning Kamp
564632b081 Remove unneeded #include of geom_stats.h 2003-03-09 10:04:21 +00:00
Poul-Henning Kamp
f48b881942 Stamp out Danglish. 2003-03-09 10:02:31 +00:00
Poul-Henning Kamp
0e6be4723b Don't use statistics counters to detect outstanding I/O. 2003-03-09 10:01:16 +00:00
Poul-Henning Kamp
c6ae9b5fd2 Don't abuse the statistics counters for detecting if we have outstanding
I/O requests, instead use the new dedicated fields in the consumer and
provider to track this.
2003-03-09 09:59:48 +00:00
Poul-Henning Kamp
0e082fcca2 Add u_int nstart, nend counters to consumer and providers so we will not
have to examine the stats structure to tell if we have outstanding I/O
requests.

Making them u_int improves the chance of atomic updates to them,
but risks roll-over.  Since the only interesting property is if
they are equal or not, this is not an issue.
2003-03-09 09:58:36 +00:00
Poul-Henning Kamp
df6c9fe955 When a DEV class consumer is orphan'ed we need to wait for all the
outstanding requests to return before we unravel the mesh.

It is very important that the stuff below us plays nice and don't
overlook a couple of outstanding bio's, because until they remember
the geom event thread is blocked.  At an expense in code here this
could be made more robust, but I actually _want_ a robust failure
in this case so any offending drivers can be fixed.
2003-03-09 09:28:45 +00:00
Poul-Henning Kamp
09f958046c Allocate devstat structure with devstat_new_entry(). 2003-03-08 20:00:11 +00:00
Poul-Henning Kamp
60794e0478 Centralize the devstat handling for all GEOM disk device drivers
in geom_disk.c.

As a side effect this makes a lot of #include <sys/devicestat.h>
lines not needed and some biofinish() calls can be reduced to
biodone() again.
2003-03-08 08:01:31 +00:00
Poul-Henning Kamp
ea6ff0649f Limit our requests to DFLTPHYS, this is generally a good idea for
memory-allocation purposes.  Right now it is also a very good idea
because we hit a Giant assertion in the free(9) processing if we
free something larger than 64k.
2003-03-07 19:09:46 +00:00
Poul-Henning Kamp
0238f932b8 Initialize the second buffer for mirroring to point to itself and not its
partner.
2003-03-04 10:15:19 +00:00
Poul-Henning Kamp
7ac40f5f59 Gigacommit to improve device-driver source compatibility between
branches:

Initialize struct cdevsw using C99 sparse initializtion and remove
all initializations to default values.

This patch is automatically generated and has been tested by compiling
LINT with all the fields in struct cdevsw in reverse order on alpha,
sparc64 and i386.

Approved by:    re(scottl)
2003-03-03 12:15:54 +00:00
Poul-Henning Kamp
aa8918faf9 NO_GEOM cleanup:
Remove cdevsw->d_psize() implementation, we don't need it any more.
2003-03-02 14:42:01 +00:00
Poul-Henning Kamp
98bbd7aa59 NO_GEOM cleanup:
Retire the "dev_t" centric version of the disk mini-layer.
Remove now unneeded linkage field in dev_t and struct disk.
2003-02-28 10:02:02 +00:00
Maxime Henrion
07159f9c56 Cleanup of the d_mmap_t interface.
- Get rid of the useless atop() / pmap_phys_address() detour.  The
  device mmap handlers must now give back the physical address
  without atop()'ing it.
- Don't borrow the physical address of the mapping in the returned
  int.  Now we properly pass a vm_offset_t * and expect it to be
  filled by the mmap handler when the mapping was successful.  The
  mmap handler must now return 0 when successful, any other value
  is considered as an error.  Previously, returning -1 was the only
  way to fail.  This change thus accidentally fixes some devices
  which were bogusly returning errno constants which would have been
  considered as addresses by the device pager.
- Garbage collect the poorly named pmap_phys_address() now that it's
  no longer used.
- Convert all the d_mmap_t consumers to the new API.

I'm still not sure wheter we need a __FreeBSD_version bump for this,
since and we didn't guarantee API/ABI stability until 5.1-RELEASE.

Discussed with:		alc, phk, jake
Reviewed by:		peter
Compile-tested on:	LINT (i386), GENERIC (alpha and sparc64)
Runtime-tested on:	i386
2003-02-25 03:21:22 +00:00
Peter Grehan
485d645e63 Drop down Apple Partition Map code that has been in use by some
ppc developers for a while.

OK'd by:  phk
2003-02-23 01:25:35 +00:00
Poul-Henning Kamp
ad3467e1fc NO_GEOM cleanup: Convert CCD(4) to be use "struct disk*" instead of "dev_t"
as "this" handle.
2003-02-21 23:25:43 +00:00
Poul-Henning Kamp
2c6b49f6af NO_GEOM cleanup:
Retire the "d_dump_t" and use the "dumper_t" type instead.

Dumper_t takes a void * as first arg which is more general than the
dev_t taken by d_dump_t.  (Remember: we could have net-dumpers if
somebody wrote us one!)

Define the convention for GEOM controlled disk devices to be that the
first argument to the dumper function is the struct disk pointer.

Change device drivers accordingly.
2003-02-21 19:00:48 +00:00
Poul-Henning Kamp
b82ff75854 NO_GEOM cleanup:
Change the argument to disk_destroy() to be the same struct disk * as
disk_create() takes.

This enables drivers to ignore the (now) bogus dev_t which disk_create()
returns.
2003-02-21 15:13:26 +00:00
Poul-Henning Kamp
0c977c9c53 Add M_WAITOK 2003-02-19 22:51:33 +00:00
Warner Losh
a163d034fa Back out M_* changes, per decision of the TRB.
Approved by: trb
2003-02-19 05:47:46 +00:00
Tor Egge
96365d3dcf Correctly set bio_data in cloned children when cutting up large requests. 2003-02-12 16:30:46 +00:00
Poul-Henning Kamp
8ebd558f5d Implement a handle for efficient implementation of perforations in
lower extremities.

Setting bit 4 in debugflags (sysctl kern.geom.debugflags=16) will
allow any open to succeed on rank#1 providers.  This will generally
correspond to the physical disk devices: ad0, da0, md0 etc.

This fundamentally violates the mechanics of GEOMs autoconfiguration,
and is only provided as a debugging facility, so obviously error
reports on GEOM where this bit is or has been set will not be
accepted.
2003-02-12 09:48:27 +00:00
Poul-Henning Kamp
f0e185d705 Implement a bio-taskqueue to reduce number of context switches in
disk I/O processing.

        The intent is that the disk driver in its hardware interrupt
        routine will simply schedule the bio on the task queue with
        a routine to finish off whatever needs done.

        The g_up thread will then schedule this routine, the likely
        outcome of which is a biodone() which queues the bio on
        g_up's regular queue where it will be picked up and processed.

        Compared to the using the regular taskqueue, this saves one
        contextswitch.

Change our scheduling of the g_up and g_down queues to be water-tight,
at the cost of breaking the userland regression test-shims.

Input and ideas from:   scottl
2003-02-11 22:30:26 +00:00
Poul-Henning Kamp
7e579a7c0a Announce our ability to do MAXPHYS transfers. 2003-02-11 21:29:53 +00:00
Poul-Henning Kamp
0364fe2cb3 Advertise MAXPHYS upwards, we will split as necessary before we get to the
bottom of things.
2003-02-11 21:24:25 +00:00
Poul-Henning Kamp
99af707c39 Check disk->d_maxsize/dev->si_iosize_max at open time rather than in strategy.
Printf a warning and use DFLTPHYS if the drive has not set a size.
2003-02-11 21:23:34 +00:00
Poul-Henning Kamp
15c672a31d Make a mutex to stop the race coming into geom_disk's done routine.
Cut up requests into smaller bits if they are longer than the drivers
disk->d_maxsize or dev->si_iosize_max.

Properly handle the race condition when using g_clone_bio() is used
without having the single-threadedness of g_down/g_up secure locking.
2003-02-11 18:32:31 +00:00
Poul-Henning Kamp
8028f16b1b Don't divide by zero if there is no stripewidth specified. 2003-02-11 15:23:41 +00:00
Poul-Henning Kamp
200c8a23cd Typo in last commit. 2003-02-11 15:20:34 +00:00
Poul-Henning Kamp
8a63edc3a1 Better names for struct disk elements: d_maxsize, d_stripeoffset
and d_stripesisze;

Introduce si_stripesize and si_stripeoffset in struct cdev so we
can make the visible to clustering code.

Add stripesize and stripeoffset to providers.

DTRT with stripesize and stripeoffset in various places in GEOM.
2003-02-11 14:57:34 +00:00
Poul-Henning Kamp
bb17c5f69f Propagate DISKFLAG_CANDELETE from struct disk to G_PF_CANDELETE on the
provider.
2003-02-11 14:12:06 +00:00
Poul-Henning Kamp
11eb149478 Wrap a long line. 2003-02-11 14:09:48 +00:00
Poul-Henning Kamp
392d56b4bd Don't short-circuit zero-length requests of they are BIO_[SG]ETATTR. 2003-02-11 13:13:10 +00:00
Poul-Henning Kamp
88b1af7730 Use the SI_CANDELETE flag on the dev_t rather than the D_CANFREE flag
on the cdevsw to determine ability to handle the BIO_DELETE request.
2003-02-11 12:49:58 +00:00
Poul-Henning Kamp
cadb987095 Unconditionally make our provider with G_PF_CANDELETE. 2003-02-11 12:37:04 +00:00
Poul-Henning Kamp
faa7b8b96e Propagate G_PF_CANDELETE to our own providers from the provider we attach to. 2003-02-11 12:36:33 +00:00
Poul-Henning Kamp
83333d4569 Introduce flag field and G_PF_CANDELETE field on providers. 2003-02-11 11:55:40 +00:00
Poul-Henning Kamp
dc803e37fb Remove another printf which does not say anything we didn't already know. 2003-02-11 11:02:27 +00:00
Poul-Henning Kamp
81e9eba33a Turn the "updating" flag (back) into two sequence number fields at
either ends of the structure so we have a way to determine if a
snapshot is consistent.
2003-02-11 11:01:26 +00:00
Poul-Henning Kamp
9358a8009a Remove a debugging printf. 2003-02-11 10:59:43 +00:00
Poul-Henning Kamp
cce7303af3 Update the statistics collection code to track busy time instead of
idle time.

Statistics now default to "on" and can be turned off with
        sysctl kern.geom.collectstats=0

Performance impact of statistics collection is on the order of
800 nsec per consumer/provider set on a 700MHz Athlon.
2003-02-09 17:04:57 +00:00
Poul-Henning Kamp
a09a56b5ad Put the name of the /dev entry in the .h file, userland will need it. 2003-02-08 14:50:27 +00:00
Poul-Henning Kamp
4ec353005c Move the g_stat struct to its own .h file, we will export it to other code.
Insted of embedding a struct g_stat in consumers and providers, merely
include a pointer.

Remove a couple of <sys/time.h> includes now unneeded.

Add a special allocator for struct g_stat.  This allocator will allocate
entire pages and hand out g_stat functions from there.  The "id" field
indicates free/used status.

Add "/dev/geom.stats" device driver whic exports the pages from the
allocator to userland with mmap(2) in read-only mode.

This mmap(2) interface should be considered a non-public interface and
the functions in libgeom (not yet committed) should be used to access
the statistics data.
2003-02-08 13:03:57 +00:00
Poul-Henning Kamp
91cd3dc6f5 Move #defines of major/minor to internal header file so other bits can
share and coordinate with geom_dev.
2003-02-08 12:30:12 +00:00
Poul-Henning Kamp
801bb689ca Commit the correct copy of the g_stat structure.
Add debug.sizeof.g_stat sysctl.

Set the id field of the g_stat when we create consumers and providers.

Remove biocount from consumer, we will use the counters in the g_stat
structure instead.  Replace one field which will need to be atomically
manipulated with two fields which will not (stat.nop and stat.nend).

Change add companion field to bio_children: bio_inbed for the exact
same reason.

Don't output the biocount in the confdot output.

Fix KASSERT in g_io_request().

Add sysctl kern.geom.collectstats defaulting to off.

Collect the following raw statistics conditioned on this sysctl:

    for each consumer and provider {
        total number of operations started.
        total number of operations completed.
        time last operation completed.
        sum of idle-time.
        for each of BIO_READ, BIO_WRITE and BIO_DELETE {
            number of operations completed.
            number of bytes completed.
            number of ENOMEM errors.
            number of other errors.
            sum of transaction time.
        }
    }

API for getting hold of these statistics data not included yet.
2003-02-07 23:08:24 +00:00
Poul-Henning Kamp
886d1942e8 Fix some sleep strings to make more sense. 2003-02-07 21:53:55 +00:00
Poul-Henning Kamp
7725f875ee Add the new statistics structure, put one in consumers and providers.
include <sys/time.h> as necessary.
2003-02-07 21:43:34 +00:00
Poul-Henning Kamp
936cc4614b Rename bio_linkage to the more obvious bio_parent.
Add bio_t0 timestamp, and include <sys/time.h> where needed
2003-02-07 21:09:51 +00:00
Gordon Tetlow
ddfa3cce05 Add some comments about the deficiencies of this module. I had hoped to get
around to addressing them some more, but Real Life (tm) has gotten in the
way.
2003-02-07 17:50:33 +00:00
Poul-Henning Kamp
a42106534f Check return value of g_clone_bio(). 2003-02-06 22:00:47 +00:00
Poul-Henning Kamp
ae2afc437b Experimentally don't let go of Giant in geom_disk's done.
We may actually be increasing Giant contention doing so because the
actual stuff we do is very cheap.

Also I am not convinced there is not a tiny window for a race here.
2003-02-06 21:50:39 +00:00
Poul-Henning Kamp
e39d70d4fd Put the checks we perform on a bio before calling ::start in their
own function, handle all validation and truncation at the time we
process the bio instead of when it gets scheduled.
2003-02-06 21:01:36 +00:00
Poul-Henning Kamp
51dd8980f4 Implement the new "struct disk" centered API for device drivers.
This commit should not change anything as no device drivers use the
new API yet.
2003-02-05 21:13:08 +00:00
Poul-Henning Kamp
237d2765f9 Pave the road to removing the fixed size limit on device nodes:
Change the si_name of dev_t's to be a char * and put a private buffer for
holding the name at then end of the struct.

Initialize si_name to point to the private buffer.

Put a KASSERT in geom_disk to prevent overrun on the fake dev_t we still
have to generate for the disk_drivers.
2003-02-04 10:32:40 +00:00
Gordon Tetlow
6be2e1dd37 Correct a comment. GEOM modules do not create /dev entries. They create
providers.

Pointed out by:	phk
2003-02-03 17:21:43 +00:00
Gordon Tetlow
a6fff888c3 Add the GEOM module that makes volume labels useful. A kernel compiled with
this will cause volume labels to be exposed in /dev/vol/<volname>. Currently,
there is no conflict resolution if more than one FS has the same volume name.

Reviewed by:	phk
2003-02-03 17:14:29 +00:00
Poul-Henning Kamp
ffa918814d Add a bio_disk pointer for use between geom_disk and the device drivers. 2003-02-02 11:59:54 +00:00
Poul-Henning Kamp
806d5cfff0 Eliminate the sc_openmask, ccdopen() and ccdclose() functions, we
can use the flag maintained by geom_disk.c

Having only a strategy method to intialize, don't waste space using
a cdevsw structure to do so.
2003-02-01 11:17:22 +00:00
Poul-Henning Kamp
5f6fb2dde3 Move configuration of geom/providers into its own function in preparation
for adding on-the-fly config interface.
2003-02-01 08:28:43 +00:00
Poul-Henning Kamp
a908904a1e Remove commented out g_enc_dos_partition(). We won't be needing it. 2003-01-31 21:18:41 +00:00
Poul-Henning Kamp
83dde52716 Add a rudimentary class for slicing Apple partitioned disks.
More work is needed on this, stakeholders please contact me.

Not quite asked for by:	rwatson
2003-01-31 16:27:07 +00:00
Poul-Henning Kamp
31a1093fc2 Add some agility to the disk_create() API:
Make passing the methods in a cdevsw structure optional.

Move "CANFREE" and "NOGIANT" flags into struct disk instead of the
cdevsw which may or may not be there.

Rename CANFREE to CANDELETE to match BIO_DELETE operation.

Add "OPEN" flag so drivers don't have to provide open/close methods
just to maintain such a flag.

Add temporary stopgap include of <sys/conf.h> to <sys/disk.h> until
the files which have them in the other order are fixed.

Add KASSERTS to make sure we don't get fed too many NULL pointers.

Clear our geom's softc pointer before we wither.
2003-01-30 20:34:23 +00:00
Poul-Henning Kamp
6e0b29aeca NO_GEOM cleanup: Remove sys/disklabel.h include. 2003-01-30 19:55:19 +00:00
Poul-Henning Kamp
1686ac18f9 NO_GEOM cleanup: retire disk_invalidate() 2003-01-30 19:43:50 +00:00
Poul-Henning Kamp
bf17219d59 NO_GEOM cleanup: Mark the last arg to disk_create() as unused. 2003-01-30 11:39:36 +00:00
Poul-Henning Kamp
5a67919a5e Add code to repsect the D_NOGIANT flag, should the disk device driver set it.
NO_GEOM cleanup:        remove ifdefs.

Still untested.
2003-01-29 19:47:25 +00:00
Poul-Henning Kamp
fc2b90eaab Sort these functions as the author instructed. 2003-01-29 18:37:29 +00:00
Poul-Henning Kamp
c516a05a66 Mark some args unused so this compiles in userland. 2003-01-28 09:48:09 +00:00
Poul-Henning Kamp
e55d9b0bd1 Use a void * to carry the private data for return-call'ed ioctl requests.
Amongst other things this avoids a complex workaround in the userland
regression bits.
2003-01-28 09:47:50 +00:00
Poul-Henning Kamp
7253da9c05 Implement DIOCBSDBB ioctl which overwrites first BBSIZE bytes of BSD
labeled disk.

This is complicated by the fact that BBSIZE is greater than the
PAGE_SIZE limit ioctl inflicts on arguments which are automatically
copied in.

As long as we don't need access to userland memory (copyin/out) we
can deal with the ioctl using g_callme() which executes it from the
GEOM event thread.

Once we need copyin/out, we need to return the bio with EDIRIOCTL
in order to make geom_dev call us back in the original process context
where copyin will work.

Unfortunately, that results in us getting called with Giant, so
we have to DROP_GIANT/PICKUP_GIANT around the code where we diddle
GEOMs internals.

Sometimes you just can't win...

... But it does make geom_bsd.c an almost complete example of the
GEOM beastiarium.
2003-01-26 21:54:36 +00:00
Alfred Perlstein
44956c9863 Remove M_TRYWAIT/M_WAITOK/M_WAIT. Callers should use 0.
Merge M_NOWAIT/M_DONTWAIT into a single flag M_NOWAIT.
2003-01-21 08:56:16 +00:00
Poul-Henning Kamp
c0805171aa disk_dev_synth() is a NO_GEOM hack. 2003-01-20 11:29:07 +00:00
Poul-Henning Kamp
30f5ffb8d9 Remove need for <sys/diskslice.h> but retain numerical compatibilty just in case. 2003-01-20 11:23:00 +00:00
Poul-Henning Kamp
0f76d6d822 Finally give CCD the disk mini-layer treatment:
CAUTION:

        Previously CCD would be different from all other disks in
        the system in that there were no "ccd0" device, only a
        "ccd0c" device.

        This is no longer so after this commit.  If you access a
        ccd device through the "/dev/ccd0c" device _and_ have not
        actually put a BSD disklabel on the device, you will have
        to use the name "/dev/ccd0".  If your CCD device contains
        a BSD disklabel there should be no difference.

        You need to recompile ccdconfig(8) using the changed
        src/sys/sys/ccdvar.h for the -g "show me" option to work.

        I have run the regression test I created before I started
        overhauling CCD and it flags no problems, but this code
        is mildly evil, so take care.  If you would cry if you lost
        what's on CCD, make a back before you upgrade.

Create separate cdevsw for the /dev/ccd.ctl device.

Remove the cloning function, the disk-minilayer will do all naming
for us.

Remove the ccdunit and ccdpart functions and carry the softc pointer
in the relevant dev_t's and structures.

Release all memory when a CCD device is unconfigured, previously
the softc would linger behind.

Remove all traces of BSD disklabel fiddling code.

Remove ccdpsize, the disk mini-layer does this for us.

Don't allocate memory with M_WAITOK in ccdstrategy().

Remove boundary checks which the disk mini-layer does for us.

Don't allocate space for more than 2 ccdbuf, RAID was never implemented.

NB: I have not tried to address any of the preexisting ailments of CCD.
2003-01-19 15:00:58 +00:00