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79 Commits

Author SHA1 Message Date
imp
db85f415fa while (0); -> while (0) in multi-line macros 2006-08-17 22:50:33 +00:00
le
148e4e97f6 Protect from creating striped and RAID5 plexes with unequally sized 
subdisks.
 2006-03-30 14:01:25 +00:00
le
9a2fc25611 Fix whitespace. 2006-03-23 20:01:13 +00:00
le
80efd8a6c8 Implement the 'resetconfig' command. 
PR:            kern/94835
Submitted by:  Ulf Lilleengen <lulf@stud.ntnu.no>
 2006-03-23 19:58:43 +00:00
le
40531c331d Catch the case when a subdisk has no provider or no consumer 
attached to it.
 2006-02-08 21:32:45 +00:00
le
c29a43240c Get rid of the gv_bioq hack in most parts of the I/O path and 
use the standard bioq structures.
 2006-01-06 18:03:17 +00:00
sobomax
16e3e466cc Don't pass error value pointer to g_read_data(9) at all if we don't 
have any use of it.

Suggested by:	pjd
 2005-11-30 22:15:00 +00:00
sobomax
29543921ea Check for g_read_data(9) errors properly: 
o The only indication of error condition is NULL value returned by
  the function;

o value pointed to by error argument is undefined in the case when
  operation completes successfully.

Discussed with: phk
 2005-11-30 19:24:51 +00:00
le
de257b1b7a Since we want a vinum geom created anytime the module loads, move 
the geom creation to a seperate init function and ignore the tasting.

The config is now parsed only in the vinumdrive geom, which hopefully
fixes the problem, that the drive class tasted before the vinum class
had a chance, for good.

Also restore the behaviour that the module can be loaded at boot time
and on a running system.
 2005-11-24 15:11:41 +00:00
le
00a607320a Whitespace. 2005-11-20 12:14:18 +00:00
le
d875cd85c6 Always declare variables at the start of the function. 
Don't allocate potentially large variables on the stack.
Check strsep() return values when the string comes from userland.
Shorten variable names for lucidity's sake.

most of the stuff:
Pointed out by:    njl@
 2005-11-20 12:12:31 +00:00
le
f2329c2aa6 Fix whitespace issue. 
Pointed out by:   joel@
 2005-11-20 10:40:06 +00:00
le
7f74b7e086 Finally bring in what was produced during Google SoC 2005: 
Add functions to rename objects and to move a subdisk from one drive
to another.

Obtained from:  Chris Jones <chris.jones@ualberta.ca>
Sponsored by:   Google Summer of Code 2005
MFC in:         1 week
 2005-11-19 20:25:18 +00:00
le
a5dfb4378d Set the G_PF_WITHER flag on the subdisk provider that is about to 
be destroyed.  That way the GEOM system handles all deallocations
and we don't have to do it ourselves.
 2005-09-08 20:08:46 +00:00
le
bd2fb8891e Prevent that sync operations can be started when they are already 
in progress, and be a bit more user friendly in terms of error
messages returned from the kernel.
 2005-08-28 18:16:31 +00:00
le
33712bde29 Shuffle around the order in which the components are compiled. 
This way, the VINUMDRIVE class is loaded before the VINUM class,
but since geom does the tasting for newly arrived classes
last-in-first-out, the VINUM class tastes first.

This removes the need to call gv_parse_config() in the drive
taste path.
 2005-08-26 14:40:32 +00:00
le
ff1cc2947a Correct the check if a plex is accessible in case it is not up. 
This makes degraded RAID5 plexes actually work.
 2005-08-22 23:24:26 +00:00
le
cd8ed397a3 Make it possible to remove stale, left-over subdisks. 2005-08-16 15:12:44 +00:00
le
e3eb852545 Fix a stupid logic bug introduced in geom_vinum_drive.c rev 1.18: 
When a drive is newly created, it's state is initially set to 'down',
so it won't allow saving the config to it (thus it will never know of
itself being created).  Work around this by adding a new flag, that's
also checked when saving the config to a drive.
 2005-08-15 17:07:47 +00:00
le
c23617fec8 *) Implement round-robin reads for multiplex volumes. 
*) Plug a possible memory leak. [1]

[1] obtained from: pjd@.
 2005-07-15 13:38:06 +00:00
le
86733f6df7 When a drive dies, don't call g_wither_geom() directly, but instead 
post an event to the geom event queue that will take care of it,
letting outstanding bios finish, and closing the consumers.

Plus some cosmetic clean ups.
 2005-05-17 16:38:30 +00:00
le
3998514c39 Only allow RAID5 plexes to be parity checked. 
PR:           kern/80427
Submitty by:  Stijn Hoop <stijn@win.tue.nl>
 2005-04-28 13:09:00 +00:00
le
ee457df6ea Remove test for zero sectorsize when tasting. This check doesn't 
seem to be necessary anymore, and it prevents tasting a valid drive
when booting with geom_vinum already loaded, since SCSI disks set their
sectorsize not until first opening them.
 2005-03-07 19:58:58 +00:00
le
af31e4b0b5 Don't allow to synchronize a plex that is already sychronizing. 
Reset the 'syncing' flag in case of errors, too.

Some cosmetics.
 2005-03-04 16:43:40 +00:00
le
5722d64390 Correctly calculate what to do and how to retry a request to a plex when 
the previous one failed and there are more than one plex in the volume.

This could have led to a flood of error messages on the console and
probably a deadlock in certain situations.
 2005-02-23 14:59:14 +00:00
le
364c3f9996 In case of drive errors, don't close the associated consumer and 
detach it, but instead let the geom wither away.

Bump copyright year.
 2005-02-17 16:08:36 +00:00
le
082eb69990 Only report state changes of subdisks and plexes when there's 
really a state change.

Reword the info a bit.
 2005-01-21 18:27:23 +00:00
le
f7ba150b68 Don't initialize error with ENXIO as we might end up here when 
the plex has no more consumers (e.g. orphaning).
 2005-01-21 18:24:20 +00:00
le
f03cf50f54 Rename synchronization and initialization threads and prefix them 
with 'gv_' for consistency.
 2005-01-19 14:49:26 +00:00
le
8c1fee0f75 Although an object may already be known in the configuration, it's 
worker thread may have been destroyed (e.g. during orphaning).

Make sure that objects get back their worker threads when they get a
new geom.
 2005-01-19 14:08:16 +00:00
le
eb12fefc35 Reset object flags after killing off an object's worker thread. 2005-01-19 13:57:09 +00:00
imp
872b48591b /* -> /*- for copyright notices, minor format tweaks as necessary 2005-01-06 18:27:30 +00:00
le
c2bd948f68 Implement 'setstate' to allow setting the state of drives and subdisks 
for debugging and emergency purposes.
 2004-11-26 12:31:36 +00:00
le
e257308b07 Implement checkparity/rebuildparity. 2004-11-26 12:01:00 +00:00
le
255694f7fc Move RAID5 offset calculation into a separate function to avoid 
code duplication.
 2004-11-15 13:04:55 +00:00
le
c174c57d9d Share gv_roughlength() between kernel and userland, as we will need it 
there later.
 2004-11-15 12:30:59 +00:00
le
d0679d2fde Give each plex a separate queue where held back bios are put on. 
This lowers the CPU usage of the worker thread and prevents a
possible live lock on non-SMP machines.

MFC candidate.
 2004-10-26 21:01:42 +00:00
le
58075b5ab9 Don't allow to create a drive that already exists. 2004-10-02 20:50:21 +00:00
le
8ff45b1742 Correctly skip the '/dev/' part when creating new drives and prefix 
a drive's provider with '/dev/' when printing the config.

Reported by:  will@
 2004-10-02 20:12:20 +00:00
le
ada7c51edc Make it possible to rebuild degraded RAID5 plexes. Note that it is 
currently not possible to do this while the volume is mounted.

MFC in:  1 week
 2004-09-30 12:57:35 +00:00
le
5dae52591b Single concat or striped plexes don't need no special initialization 
if their subdisks are all available, so let them be brought up.
 2004-09-18 18:03:20 +00:00
le
18ba8315a7 Re-vamp how I/O is handled in volumes and plexes. 
Analogous to the drive level, give each volume and plex a worker thread
that picks up and processes incoming and completed BIOs.

This should fix the data corruption issues that have come up a few
weeks ago and improve performance, especially of RAID5 plexes.

The volume level needs a little work, though.
 2004-09-18 13:44:43 +00:00
le
eb087a4ece Give the DRIVE geom a worker thread that picks up incoming bios, 
sends them down, and takes care of the finished bios.  This makes it
easier to handle I/O errors at drive level.
 2004-09-13 21:01:36 +00:00
le
a4de4268bd Rename gv_kill_thread() to gv_kill_plex_thread(), since there are more 
threads to come.
 2004-09-13 17:44:47 +00:00
le
876ffa30db Save the config back to disk when a drive goes down. 2004-09-13 17:33:52 +00:00
le
b19a8d0082 Read a whole sector instead of GV_HDR_LEN, since a sector might be 
bigger (i.e. on CD-ROMs).
 2004-09-13 17:27:58 +00:00
le
440914a8bb Move config_new_drive() to the correct place and rename it to 
gv_config_new_drive().
 2004-08-27 21:32:18 +00:00
le
0fd3e9eb56 When attaching a consumer from a volume to a plex, check if the 
volume already has a plex attached and adjust the access counts
of the new consumer accordingly.
 2004-08-26 21:04:41 +00:00
le
b83d5cd619 Compare the addresses of two RAID5 work packets directly instead 
of the addresses of their related bios when locking one out, since
they could share a bio and this could lead to parity corruption.
 2004-08-23 17:50:18 +00:00
le
a52623fe58 Implement the possibility to remove drives. 2004-08-22 17:07:55 +00:00