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Commit Graph

754 Commits

Author SHA1 Message Date
Poul-Henning Kamp
dd66958e28 Give classes a version number and refuse to touch classes which are not
understood.  This makes room for additional binary compatibility in the
future.

Put fields in the class for the geom's methods and initialize the methods
of a new geom from these fields.  This saves some code in all classes.
2004-08-08 06:46:27 +00:00
Pawel Jakub Dawidek
cea363682f Add and document kern.geom.stripe.fast_failed sysctl, which shows how
many times "fast" mode failed.
2004-08-06 10:19:34 +00:00
Pawel Jakub Dawidek
ec70430134 Fields bio_caller[12] should be used by the consumer and fields
bio_driver[12] should be used by the provider!
2004-08-06 10:07:03 +00:00
Pawel Jakub Dawidek
37abacd4ff Fix I/O leakage. We're cloning bios in g_stripe_start_fast(), but when
something goes wrong while running in "fast" mode, we free all bios and
falling back to "economic" mode. Freeing bios, doesn't mean decrease
bio_children, so bio_inbed couldn't be equal to bio_children and request
was never finished.
Decrease bio_children manually when destroying bios.

Reported by:	Sam Lawrance <boris@brooknet.com.au>, simon
2004-08-06 09:55:40 +00:00
Pawel Jakub Dawidek
db332970e7 Don't use 'bp' after its destruction! 2004-08-05 14:07:21 +00:00
Pawel Jakub Dawidek
a4fa09ec93 Simplify a bit - we could use 'sc' here as it was initialized properly. 2004-08-05 13:22:17 +00:00
Pawel Jakub Dawidek
51385a3c00 - Add two fields to bio structure: 'bio_cflags' which can be used by
consumer and 'bio_pflags' which can be used by provider.
- Remove BIO_FLAG1 and BIO_FLAG2 flags. From now on new fields should be
  used for internal flags.
- Update g_bio(9) manual page.
- Update some comments.
- Update GEOM_MIRROR, which was the only one using BIO_FLAGs.

Idea from:	phk
Reviewed by:	phk
2004-08-04 21:35:05 +00:00
Pawel Jakub Dawidek
fe7c3780c8 - Add "prefer" balance algorithm. When used, only disk with the biggest
priority will be used for reading.
- Bump version number.
2004-08-04 12:09:53 +00:00
Pawel Jakub Dawidek
e1efe7edcd MFp4: We don't really need g_mirror_free_disk() function. 2004-08-04 10:02:06 +00:00
Pawel Jakub Dawidek
7d01f1820a Fix comment. 2004-08-03 15:41:33 +00:00
Pawel Jakub Dawidek
969ff54d70 - Fix unloading by the same way it is done in my other classes:
set gp->softc to NULL and return ENXIO when it is NULL, so GEOM
  will not panic or hang, but unload one device on every 'unload'.
  This make 'unload' command usable, but it have to be executed
  <number of devices> + 1 times.
- Made use of 'pp' variable.
2004-08-02 00:37:40 +00:00
Pawel Jakub Dawidek
6b1c71eef8 Typo. 2004-08-01 20:41:58 +00:00
Pawel Jakub Dawidek
4084e6aad2 - Launch main provider when there are no more disks in NEW state.
- Log syncid bump at debug level 1.
2004-08-01 09:01:50 +00:00
Pawel Jakub Dawidek
959521ff1f If there are no valid components after the timeout, just destroy device.
There is probably nothing to wait for.
2004-07-31 22:10:51 +00:00
Lukas Ertl
4b017d0d93 Propagate size changes upwards. 2004-07-31 21:34:21 +00:00
Pawel Jakub Dawidek
4b2e596e38 Handle spoil event in dedicated function: g_mirror_spoiled().
The different between the new function and g_mirror_orphan() (which was
used previously) is that syncid is bumped immediately, instead of on
first write, because when consumer was spoiled, it means, that its
provider was opened for writing, so we can't trust that its data
will be valid when it will be connected again.
2004-07-31 21:08:17 +00:00
Pawel Jakub Dawidek
484405eb8d Remove unused field. 2004-07-31 13:03:38 +00:00
Pawel Jakub Dawidek
2d53f42307 Destroy synchronization geom immediately. This should fix unloading without
stopping all mirrors.
2004-07-31 11:22:03 +00:00
Pawel Jakub Dawidek
c9d3021a92 Allow slice creation on providers from MIRROR class.
This should allow mounting root file system from a mirror.
2004-07-31 01:17:20 +00:00
Pawel Jakub Dawidek
55d6eb9fef Add '-p' option for 'insert' command which allows to specify priority
of the new component.
Version number wasn't bumped (it should be), because I think there are
no geom_mirror users yet.
2004-07-31 00:54:44 +00:00
Pawel Jakub Dawidek
ff9160f5f3 - Check if 'slice' argument was given.
- Check if disk isn't already the mirror component.
2004-07-31 00:51:33 +00:00
Pawel Jakub Dawidek
f251dfbf5d Dump correct field. 2004-07-31 00:37:14 +00:00
Lukas Ertl
663e5a3311 Set the access counts of a subdisk correctly when attaching it
to a plex that already has subdisks.
2004-07-30 23:40:38 +00:00
Pawel Jakub Dawidek
fa4a1febf7 Add GEOM_MIRROR class which provide RAID1 functionality and has many useful
features. The gmirror(8) utility should be used for control of this class.
There is no manual page yet, but I'm working on it with keramida@.

Many useful tests provided by:	simon (thank you!)
Some ideas from:		scottl, simon, phk
2004-07-30 23:13:45 +00:00
Pawel Jakub Dawidek
63ead4f2d3 Nuke geom_mirror class. New geom_mirror class is in the way.
Approved by:	phk
2004-07-30 19:59:36 +00:00
Pawel Jakub Dawidek
f49b0080d0 Allow to create slices on providers from class LABEL and class NOP.
This is really ugly way to do this, but there is no other way for now.
It allows to mount root file system from providers which belong to
those classes.

Approved by:	phk
2004-07-30 19:55:12 +00:00
Pawel Jakub Dawidek
d5c96d389e - Add '-S' option, which allow to specify sector size for transparent
provider.
- Bump version number.

This allows for a quite interesting trick. One can setup a stripe with
stripe size of 512 bytes and create transparent provider on top of it
with sector size equal to <ndisks> * 512. The result will be something
like RAID3 without parity disk (every access will touch all disks).
2004-07-30 08:19:22 +00:00
Lukas Ertl
07c424cdaf Shut up the compiler and temporarily '#if 0' gv_destroy_geom(),
until we need it again.
2004-07-29 11:32:09 +00:00
Pawel Jakub Dawidek
1d723f1d51 Improve geom(8)'s 'list' command to show geoms and their providers and
consumers. Teach STRIPE, CONCAT and NOP classes about this improvement.
2004-07-26 17:14:47 +00:00
Pawel Jakub Dawidek
889c5dc22b Change naming scheme from /dev/<name>.stripe to /dev/stripe/<name>. 2004-07-26 16:10:27 +00:00
Pawel Jakub Dawidek
ba385d0091 Change naming scheme from /dev/<name>.concat to /dev/concat/<name>. 2004-07-26 16:08:32 +00:00
Pawel Jakub Dawidek
2017a9d3e2 M_WAITOK is ok here, while I'm using M_WAITOK later in this function. 2004-07-26 15:41:28 +00:00
Pawel Jakub Dawidek
75cc259de8 M_WAITOK is ok here, while I'm using M_WAITOK later in this function. 2004-07-26 15:35:04 +00:00
Lukas Ertl
d8a720f9ec Save the vinum config back to disk after syncing two plexes. 2004-07-26 07:30:21 +00:00
Lukas Ertl
3242376072 There's a chance that the VINUMDRIVE class tastes before the
VINUM class, so let the VINUMDRIVE class parse the on-disk
configuration, too.
2004-07-25 23:01:09 +00:00
Lukas Ertl
5289667c16 Check for a NULL pointer before dereferencing it. 2004-07-25 09:41:31 +00:00
Lukas Ertl
c291a77678 Use a temporary geom when tasting vinumdrives and lock the 'real'
vinumdrive geom with an exclusive bit.  This should fix the problem
when underlying partitions overlap (i.e. the 'a' partition is at
the same offset as the 'c' partition).

Ideas borrowed from pjd@, quite a bit of testing by
Matthias Schuendehuette <msch@snafu.de>.
2004-07-24 22:26:40 +00:00
Lukas Ertl
6db345b90e Disable kldunloading of geom_vinum temporarily until I figured out
how to do it correctly.
2004-07-24 19:04:24 +00:00
Pawel Jakub Dawidek
e370e911b2 MFp4: Add two options for gnop(8)'s 'create' command:
-o offset - specifies where to start on the original provider
	-s size - specifies size of the transparent provider
2004-07-19 07:52:56 +00:00
Pawel Jakub Dawidek
726cb09fbc Fix copy&paste bug. 2004-07-18 16:51:58 +00:00
Pawel Jakub Dawidek
be7695cf65 Fix exclusive-bit leakage. 2004-07-18 06:54:29 +00:00
Poul-Henning Kamp
3e019deaed Do a pass over all modules in the kernel and make them return EOPNOTSUPP
for unknown events.

A number of modules return EINVAL in this instance, and I have left
those alone for now and instead taught MOD_QUIESCE to accept this
as "didn't do anything".
2004-07-15 08:26:07 +00:00
Pawel Jakub Dawidek
f3b3b0ce27 Remove unused macro. 2004-07-13 12:01:29 +00:00
Pawel Jakub Dawidek
45c26487a7 Decrease log level of one debug message, so there is no hole (level 2
wasn't used at all).
2004-07-13 12:01:11 +00:00
Pawel Jakub Dawidek
71df072547 Minor sysctl description fixes.
Submitted by:	simon
2004-07-13 11:23:31 +00:00
Pawel Jakub Dawidek
4c55f05b89 Implement "FAST" mode for GEOM_STRIPE class and turn it on by default.
In this mode you can setup even very small stripe size and you can be
sure that only one I/O request will be send to every disks in stripe.
It consumes some more memory, but if allocation fails, it will fall
back to "ECONOMIC" mode.

It is about 10 times faster for small stripe size than "ECONOMIC" mode
and other RAID0 implementations. It is even recommended to use this
mode and small stripe size, so our requests are always splitted.

One can still use "ECONOMIC" mode by setting kern.geom.stripe.fast to 0.
It is also possible to setup maximum memory which "FAST" mode can consume,
by setting kern.geom.stripe.maxmem from /boot/loader.conf.
2004-07-09 14:30:09 +00:00
Poul-Henning Kamp
539bec4042 Only detach consumers which are attached when we wither stuff away.
Pointed out by:	pjd
2004-07-09 14:06:17 +00:00
Poul-Henning Kamp
1b464bd889 Make withering water tight.
When we orphan/wither a provider, an attached geom+consumer could
end up being withered as a result and it may be in front of us in
the normal object scanning order so we need to do multi-pass.  On
the other hand, there may be withering stuff we can't get rid off
(yet), so we need to keep track of both the existence of withering
stuff and if there is more we can do at this time.
2004-07-08 16:17:14 +00:00
Poul-Henning Kamp
4fa0290fbf Fail normally rather than KASSERT if attempt to open a spoiled consumer. 2004-07-08 10:34:09 +00:00
Pawel Jakub Dawidek
01ab535e8d Add missing argument. 2004-07-06 17:06:54 +00:00