Commit Graph

22 Commits

Author SHA1 Message Date
Andrey V. Elsukov
5d807a0e1a Include sys/sbuf.h directly.
Reviewed by:	pjd
2011-07-11 05:22:31 +00:00
Ulf Lilleengen
a8a3cd7d9d - Improve error message consistency and wording. 2009-10-05 08:44:31 +00:00
Ulf Lilleengen
41944888fe - Fix a case where a RAID5 volume would think that it is supposed to grow a new
subdisk after a parity rebuild.
2009-05-06 19:18:19 +00:00
Ulf Lilleengen
c0b9797aa8 Import the gvinum work that have been done during and after Summer of Code 2007.
The work have been under testing and fixing since then, and it is mature enough
to be put into HEAD for further testing.

A lot have changed in this time, and here are the most important:
- Gvinum now uses one single workerthread instead of one thread for each
  volume and each plex. The reason for this is that the previous scheme was
  very complex, and was the cause of many of the bugs discovered in gvinum.
  Instead, gvinum now uses one worker thread with an event queue, quite
  similar to what used in gmirror.
- The rebuild/grow/initialize/parity check routines no longer runs in
  separate threads, but are run as regular I/O requests with special flags.
  This made it easier to support mounted growing and parity rebuild.
- Support for growing striped and raid5-plexes, meaning that one can extend the
  volumes for these plex types in addition to the concat type. Also works while
  the volume is mounted.
- Implementation of many of the missing commands from the old vinum:
  attach/detach, start (was partially implemented), stop (was partially
  implemented), concat, mirror, stripe, raid5 (shortcuts for creating volumes
  with one plex of these organizations).
- The parity check and rebuild no longer goes between userland/kernel, meaning
  that the gvinum command will not stay and wait forever for the rebuild to
  finish. You can instead watch the status with the list command.
- Many problems with gvinum have been reported since 5.x, and some has been hard
  to fix due to the complicated architecture. Hopefully, it should be more
  stable and better handle edge cases that previously made gvinum crash.
- Failed drives no longer disappears entirely, but now leave behind a dummy
  drive that makes sure the original state is not forgotten in case the system
  is rebooted between drive failures/swaps.
- Update manpage to reflect new commands and extend it with some examples.

Sponsored by:   Google Summer of Code 2007
Mentored by:    le
Tested by:      Rick C. Petty <rick-freebsd2008 -at- kiwi-computer.com>
2009-03-28 17:20:08 +00:00
Ulf Lilleengen
86b3c6f5bc - Import macros used in gmirror for printing gvinum debug messages and making
the output more standardized.
- Add a sysctl to set the verbosity of the debug messages.
- While there, fixup typos and wording in the messages.
2008-10-26 17:20:37 +00:00
Ulf Lilleengen
56af4c6141 - Fix a logic error when updating plex configuration.
Approved by:	pjd (mentor)
2008-07-11 16:46:29 +00:00
Lukas Ertl
a2237c41fc -) Correct sdcount for a plex when removing or adding subdisks.
-) Set correct sizes for plexes and volumes a subdisk has been removed.

Submitted by:   Ulf Lilleengen <lulf_AT_freebsd.org>
2007-04-12 17:54:35 +00:00
Lukas Ertl
ff91880e5d Protect from creating striped and RAID5 plexes with unequally sized
subdisks.
2006-03-30 14:01:25 +00:00
Lukas Ertl
d5817a5009 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
Lukas Ertl
3b6cdf438a Reset object flags after killing off an object's worker thread. 2005-01-19 13:57:09 +00:00
Lukas Ertl
94175098f1 Share gv_roughlength() between kernel and userland, as we will need it
there later.
2004-11-15 12:30:59 +00:00
Lukas Ertl
d9d3a74c87 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
Lukas Ertl
67e3ab6ee5 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
Lukas Ertl
12653dec9d 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
Lukas Ertl
fce2deb197 Rename gv_kill_thread() to gv_kill_plex_thread(), since there are more
threads to come.
2004-09-13 17:44:47 +00:00
Lukas Ertl
45d0fdcda9 Add forgotten format specifier in a KASSERT and shut up the compiler.
Submitted by: Gavin Atkinson <gavin.atkinson@ury.york.ac.uk>
2004-08-22 13:34:24 +00:00
Lukas Ertl
92f49a969d If we kill the worklist thread of a RAID5 plex we can destroy
the worklist mutex at the same time, so move the mtx_destroy() call
to gv_kill_thread().
2004-08-10 20:51:48 +00:00
Lukas Ertl
4b017d0d93 Propagate size changes upwards. 2004-07-31 21:34:21 +00:00
Lukas Ertl
865897c9f1 Mark a plex as 'newborn' when it is created. This is used to indicate
that new RAID5 plexes need to be initialized first.
2004-06-25 18:04:33 +00:00
Lukas Ertl
99b536d888 Handle dead disks in a somewhat sane way. 2004-06-16 14:41:04 +00:00
Lukas Ertl
da8f1aa53d Fix several bugs related to subdisk drive_offset calculation. 2004-06-15 20:56:25 +00:00
Lukas Ertl
73679edcc7 Add a first version of a GEOMified vinum. 2004-06-12 21:16:10 +00:00