Commit Graph

47 Commits

Author SHA1 Message Date
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
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
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
83333d4569 Introduce flag field and G_PF_CANDELETE field on providers. 2003-02-11 11:55:40 +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
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
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
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
abb50a48e8 Remove g_silence(). It does not do anything anymore. 2003-01-13 08:46:32 +00:00
Poul-Henning Kamp
0f9d3dba37 Constification and some s/int/u_int/ changes. 2002-12-16 22:33:27 +00:00
Poul-Henning Kamp
c7f74a4931 Use more mnemonic argument names in the access functions.
Sponsored by:	DARPA & NAI Labs
Approved by:	re (blanket)
2002-12-01 15:54:39 +00:00
Poul-Henning Kamp
e6e142398f Straighten up the geom.ctl config interface definitions.
Sponsored by:	DARPA & NAI Labs
2002-11-06 20:05:15 +00:00
Poul-Henning Kamp
ce225127b9 Add a g_dev_print() function which prints all the /dev entries GEOM
know about.
2002-10-25 18:42:42 +00:00
Poul-Henning Kamp
48444d6262 Make the sectorsize a property of providers so we can include it in the XML
output.

Sponsored by:	DARPA & NAI Labs
2002-10-20 19:18:07 +00:00
Poul-Henning Kamp
9b232f1493 Make it possible to specify also via geom_t ID in the geom.ctl config ioctl.
Sponsored by:	DARPA & NAI Labs.
2002-10-20 08:42:18 +00:00
Poul-Henning Kamp
220aecb807 Constification ? Yes, out that door, row on the left, one patch each.
Sponsored by:	DARPA & NAI Labs
2002-10-15 18:21:53 +00:00
Jake Burkholder
60e0e42e3c Moved geom class initialization to SI_SUB_DRIVERS from SI_SUB_PSEUDO.
This fixes mounting root from md(4) which calls disk_create() early.
2002-10-14 20:20:17 +00:00
Poul-Henning Kamp
6b4abfd6eb Implement the GEOMCONFIGGEOM ioctl which can be used to manually create
and configure an instance of a class on a give provider.

Sponsored by:	DARPA & NAI Labs
2002-10-14 10:05:23 +00:00
Poul-Henning Kamp
3101ed1b7c Add the outline of the "/dev/geom.ctl" handling code.
Sponsored by:	DARPA & NAI Labs.
2002-10-13 20:33:33 +00:00
Poul-Henning Kamp
e970552d3a Give GEOM modules a chance to specify their own init routine, in case they
have special requirements.

Sponsored by:	DARPA & NAI Labs.
2002-10-13 18:42:35 +00:00
Poul-Henning Kamp
adfa3213c7 Copyin and copyout are only possible from a process-native thread,
and therefore we need a way for ioctl handlers to run in that thread
in GEOM.  Rather than invent a complicated registration system to
recognize which ioctl handler to use for a given ioctl, we still
schedule all ioctls down the tree as bio transactions but add a
special return code that means "call me directly" and have the
geom_dev layer do that.

Use this for all ioctls that make it as far as a diskdriver to
avoid any backwards compatibility problems.

Requested by:   scottl
Sponsored by:   DARPA & NAI Labs
2002-10-07 06:25:26 +00:00
Poul-Henning Kamp
72840432e0 Retire g_io_fail() and let g_io_deliver() take an error argument instead.
Sponsored by:	DARPA & NAI Labs.
2002-09-30 08:54:46 +00:00
Poul-Henning Kamp
90b1cd5615 Introduce g_write_data() function.
Sponsored by:	DARPA & NAI Labs
2002-09-30 08:50:47 +00:00
Poul-Henning Kamp
5b3317e9e6 Add missing g_enc_le2().
Sponsored by:	DARPA & NAI Labs.
2002-09-30 08:47:46 +00:00
Poul-Henning Kamp
9169e8004d Various no-ops:
Add a __unused.

Make the 2byte decoder functions return 16 bits for the benefits
of picky lints.

No need to grab giant around a tsleep() when we have a timeout.

Sponsored by:	DARPA & NAI Labs.
2002-09-27 21:05:05 +00:00
Poul-Henning Kamp
346cd5fe2d Implement g_call_me() as a way for geom methods to schedule operations
to be performed in the event-thread.

To do this, we need to lock the eventlist with g_eventlock (nee g_doorlock),
since g_call_me() being called from the UP/DOWN paths will not be able to
aquire g_topology_lock.

This also means that for now these events are not referenced on any
particular consumer/provider/geom.

For UP/DOWN path use, this will not become a problem since the access()
function will make sure we drain any bio's before we dismantle.

Sponsored by:   DARPA & NAI Labs.
2002-09-27 20:38:36 +00:00
Poul-Henning Kamp
85b62edb84 Add a couple more of the big/little-endian conversion routines and make
them visible from userland, if need be.

I wish that the C language contained this as part of struct definintions,
but failing that, I would settle for an agreed upon set of functions for
packing/unpacking integers in various sizes from byte-streams which may
have unfriendly alignment.

This really belongs in <sys/endian.h> I guess.
2002-09-13 10:33:10 +00:00
Poul-Henning Kamp
4fbd12689a Remove "magicspace". It looks good on paper, it doesn't work in practice.
Sponsored by: DARPA & NAI Labs.
2002-09-06 08:50:28 +00:00
Poul-Henning Kamp
503abe4540 Improve some on the naming.
Submitted by:	iedowse
2002-06-09 10:57:34 +00:00
Poul-Henning Kamp
678735da39 Change the registration of magic spaces so it does its own memory management.
Sponsored by: DARPA & NAI Labs.
2002-06-05 20:30:36 +00:00
Poul-Henning Kamp
07107de9bc Introduce the concept of "magic spaces", and implement them in most of
the relevant classes.

Some methods may implement various "magic spaces", this is reserved
or magic areas on the disk, set a side for various and sundry purposes.
A good example is the BSD disklabel and boot code on i386 which occupies
a total of four magic spaces: boot1, the disklabel, the padding behind
the disklabel and boot2.  The reason we don't simply tell people to
write the appropriate stuff on the underlying device is that (some of)
the magic spaces might be real-time modifiable.  It is for instance
possible to change a disklabel while partitions are open, provided
the open partitions do not get trampled in the process.

Sponsored by:	DARPA & NAI Labs.
2002-05-21 20:33:49 +00:00
Poul-Henning Kamp
4b8374a778 Don't grab Giant around malloc(9) and free(9).
Don't grab Giant around wakeup(9).
Don't print verbose messages about each device found in geom_dev.
Various cleanups.

Sponsored by: DARPA & NAI Labs.
2002-05-20 10:03:15 +00:00
Poul-Henning Kamp
078c6f01f9 Make specific provisions for the kernel simulator used in the regression
tests, other userland programs may need to include <geom/geom.h>.

Sponsored by:	DARPA & NAI Labs.
2002-04-24 12:53:12 +00:00
Poul-Henning Kamp
53705e35ae Implement the GEOMGETCONF ioctl which returns vital stats for the
current device in XML in an sbuf.

Sponsored by:	DARPA & NAI Labs
2002-04-23 19:54:02 +00:00
Poul-Henning Kamp
7d590cc46f Introduce some serious paranoia to try to catch a memory overwrite problem
as early as possible.

Sponsored by:	DARPA & NAI Labs
2002-04-23 11:48:45 +00:00
Poul-Henning Kamp
efb9df5cef Protect against multitple #includes of this file. 2002-04-22 19:54:17 +00:00
Poul-Henning Kamp
95c24b31df Make kernel dumps work with GEOM.
Notice that if the device on which the dump is set is destroyed for
any reason, the dump setting is lost.  This in particular will
happen in the case of spoilage.  For instance if you set dump on
ad0s1b and open ad0 for writing, ad0s* will be spoilt and the dump
setting lost.  See geom(4) for more about spoiling.

Sponsored by: DARPA & NAI Labs.
2002-04-19 09:24:12 +00:00
Poul-Henning Kamp
a4ef1c5f92 Introduce the convenience function g_getattr() and make it DWIM.
Sponsored by: DARPA & NAI Labs.
2002-04-09 15:13:42 +00:00
Poul-Henning Kamp
0d3f37a804 Constifixation of attribute argument to g_io_[gs]etattr()
Sponsored by:	DARPA & NAI Labs
2002-04-09 15:12:05 +00:00
Poul-Henning Kamp
2fccec19e9 Centralize EOF handling and improve access controls for bio scheduling.
Sponsored by:	DARPA & NAI Labs
2002-04-04 09:58:20 +00:00
Poul-Henning Kamp
07d77fc610 Move access and orphan member functions from class to geom.
Sponsored by: DARPA & NAI Labs
2002-04-04 09:54:13 +00:00
Poul-Henning Kamp
b1876192f0 Eliminate some thread pointers which do not make sense anymore.
Split private parts of geom.h into geom_int.h.  The latter should
never be included in class implemtations.
2002-03-26 22:07:38 +00:00
Poul-Henning Kamp
e805e8f0e8 Cave in to tradition and rename "methods" to "classes". 2002-03-26 21:40:06 +00:00
Poul-Henning Kamp
3773a65c0b Be more systematic about conversion of on-disk formats in a endian/width
agnostic way.

Collapse the MBR and MBREXT methods into one file and make them endian/width
agnostic.

Sponsored by:	DARPA & NAI Labs.
2002-03-24 11:21:41 +00:00
Poul-Henning Kamp
117bae1fd3 Need a different #include for the userland regression test. 2002-03-17 19:15:28 +00:00
Poul-Henning Kamp
a5b2e75d32 Add a generic and general ioctl pass-through mechanism.
It should now be posible to issue ioctls to SCSI CD drives.
2002-03-16 09:24:19 +00:00
Poul-Henning Kamp
dd84a43c1d First commit of the GEOM subsystem to make it easier for people to
test and play with this.

This is not yet production quality and should be run only on dedicated
test boxes.

For people who want to develop transformations for GEOM there exist a
set of shims to run geom in userland (ask phk@freebsd.org).

Reports of all kinds to: phk@freebsd.org
Please include in report:
        dmesg
        sysctl debug.geomdot
        sysctl debug.geomconf

Known significant limitations:
        no kernel dump facility.
        ioctls severely restricted.

Sponsored by:   DARPA, NAI Labs
2002-03-11 21:42:35 +00:00