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freebsd-skq/sys/geom
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Pawel Jakub Dawidek f5a2f7feac Implement new reading algorithm, which will use parity component for reading 
as well, even if device is in complete state.
I observe 40% of speed-up with this option for random read operations,
but slowdown for sequential reads.
Basically, without this option reading from a RAID3 device built from 5
components (c0-c4) looks like this:

	Request no.	Used components
	1		c0+c1+c2+c3
	2		c0+c1+c2+c3
	3		c0+c1+c2+c3

With the new feature:

	Request no.	Used components
	1		c0+c1+c2+c3
	2		(c1^c2^c3^c4)+c1+c2+c3
	3		c0+(c0^c2^c3^c4)+c2+c3
	4		c0+c1+(c0^c1^c3^c4)+c3
	5		c0+c1+c2+(c0^c1^c2^c4)
	6		c0+c1+c2+c3
	[...]
2004-08-21 18:11:46 +00:00
..
bde
Tag all geom classes in the tree with a version number.
2004-08-08 07:57:53 +00:00
concat
- Introduce option for hardcoding providers' names into metadata.
2004-08-09 11:29:42 +00:00
gate
Tag all geom classes in the tree with a version number.
2004-08-08 07:57:53 +00:00
label
Do not use g_wither_geom(9). I doesn't work in the way which is expected
2004-08-09 11:14:25 +00:00
mirror
We really don't want to receive spoil event for synchroniztion consumers.
2004-08-18 23:33:37 +00:00
nop
NOP class doesn't operate on metadata, so the spoil event can be safely
2004-08-18 16:58:42 +00:00
raid3
Implement new reading algorithm, which will use parity component for reading
2004-08-21 18:11:46 +00:00
stripe
Increase default kern.geom.stripe.maxmem to 50 elements.
2004-08-11 12:57:17 +00:00
uzip
Add geom_uzip -- geom class that implements read-only compressed disks.
2004-08-13 09:40:58 +00:00
vinum
A volume can be up if it has a degraded RAID5 plex.
2004-08-19 12:03:27 +00:00
geom_aes.c
Tag all geom classes in the tree with a version number.
2004-08-08 07:57:53 +00:00
geom_apple.c
Tag all geom classes in the tree with a version number.
2004-08-08 07:57:53 +00:00
geom_bsd_enc.c
Use __FBSDID().
2003-06-11 06:49:16 +00:00
geom_bsd.c
Tag all geom classes in the tree with a version number.
2004-08-08 07:57:53 +00:00
geom_ccd.c
Tag all geom classes in the tree with a version number.
2004-08-08 07:57:53 +00:00
geom_ctl.c
Do the dreaded s/dev_t/struct cdev */
2004-06-16 09:47:26 +00:00
geom_ctl.h
Simplify the GEOM OAM api: Drop the request type, and let everything
2003-06-01 13:47:51 +00:00
geom_dev.c
Tag all geom classes in the tree with a version number.
2004-08-08 07:57:53 +00:00
geom_disk.c
Tag all geom classes in the tree with a version number.
2004-08-08 07:57:53 +00:00
geom_disk.h
Change the disk(9) API in order to make device removal more robust.
2004-02-18 21:36:53 +00:00
geom_dump.c
Rearrange some of the GEOM debugging tools to be more structured.
2004-03-10 08:49:08 +00:00
geom_event.c
Make withering water tight.
2004-07-08 16:17:14 +00:00
geom_fox.c
Tag all geom classes in the tree with a version number.
2004-08-08 07:57:53 +00:00
geom_gpt.c
Tag all geom classes in the tree with a version number.
2004-08-08 07:57:53 +00:00
geom_int.h
Make withering water tight.
2004-07-08 16:17:14 +00:00
geom_io.c
When sending request once again because of ENOMEM, reset bio_children
2004-08-11 12:04:35 +00:00
geom_kern.c
don't call sbuf_clear() right after sbuf_new(), it is not necessary.
2004-02-10 10:54:19 +00:00
geom_mbr_enc.c
Use __FBSDID().
2003-06-11 06:49:16 +00:00
geom_mbr.c
Tag all geom classes in the tree with a version number.
2004-08-08 07:57:53 +00:00
geom_pc98_enc.c
Use __FBSDID().
2003-06-11 06:49:16 +00:00
geom_pc98.c
Tag all geom classes in the tree with a version number.
2004-08-08 07:57:53 +00:00
geom_slice.c
Do not override the class provided dumpconf function.
2004-08-18 21:42:08 +00:00
geom_slice.h
Add a destroy_geom method to the slice "library".
2003-05-31 19:25:05 +00:00
geom_subr.c
OK, now check geom class version numbers.
2004-08-08 08:34:46 +00:00
geom_sunlabel_enc.c
Add SVR4-compatible VTOC-style elements to the Sun label. The
2004-06-01 20:18:25 +00:00
geom_sunlabel.c
Tag all geom classes in the tree with a version number.
2004-08-08 07:57:53 +00:00
geom_vol_ffs.c
Too many versions.
2004-08-09 06:04:00 +00:00
geom.h
Give classes a version number and refuse to touch classes which are not
2004-08-08 06:46:27 +00:00
notes
A note about which #include files may be used where.
2003-03-23 10:08:13 +00:00