Commit Graph

8 Commits

Author SHA1 Message Date
Alexander Motin
650e245ebf Minor addition to r242323:
Alike to BIO_WRITE, report success if at least one subdisk succeeded with
BIO_DELETE.  But unlike BIO_WRITE don't fail disk on BIO_DELETE error.

Sponsored by:	iXsystems, Inc.
MFC after:	1 month
2012-10-29 21:08:06 +00:00
Alexander Motin
609a74746a Add basic BIO_DELETE support to GEOM RAID class for all RAID levels.
If at least one subdisk in the volume supports it, BIO_DELETE requests
will be propagated down.  Unfortunatelly, for RAID levels with redundancy
unmapped blocks will be mapped back during first rebuild/resync process.

Sponsored by:	iXsystems, Inc.
MFC after:	1 month
2012-10-29 18:04:38 +00:00
Alexander Motin
c89d2fbe18 Add global and per-module sysctls/tunables to enable/disable metadata taste.
That should help to handle some cases when disk has some RAID metadata that
should be ignored, especially during boot.

MFC after:	3 days
2012-09-13 13:27:09 +00:00
Alexander Motin
ef844ef76f - Prevent error status leak if write to some of the RAID1/1E volume disks
failed while write to some other succeeded. Instead mark disk as failed.
- Make RAID1E less aggressive in failing disks to avoid volume breakage.

MFC after:	2 weeks
2012-05-11 13:20:17 +00:00
Alexander Motin
dbb2e75504 Add names for all primary RAID levels defined by DDF 2.0 specification. 2012-04-23 13:04:02 +00:00
Ed Schouten
6472ac3d8a Mark all SYSCTL_NODEs static that have no corresponding SYSCTL_DECLs.
The SYSCTL_NODE macro defines a list that stores all child-elements of
that node. If there's no SYSCTL_DECL macro anywhere else, there's no
reason why it shouldn't be static.
2011-11-07 15:43:11 +00:00
Alexander Motin
14e2cd0a00 Bunch of small bugfixes and cleanups.
Found with:	Clang Static Analyzer
2011-03-31 16:19:53 +00:00
Alexander Motin
89b172238a MFgraid/head:
Add new RAID GEOM class, that is going to replace ataraid(4) in supporting
various BIOS-based software RAIDs. Unlike ataraid(4) this implementation
does not depend on legacy ata(4) subsystem and can be used with any disk
drivers, including new CAM-based ones (ahci(4), siis(4), mvs(4), ata(4)
with `options ATA_CAM`). To make code more readable and extensible, this
implementation follows modular design, including core part and two sets
of modules, implementing support for different metadata formats and RAID
levels.

Support for such popular metadata formats is now implemented:
Intel, JMicron, NVIDIA, Promise (also used by AMD/ATI) and SiliconImage.

Such RAID levels are now supported:
RAID0, RAID1, RAID1E, RAID10, SINGLE, CONCAT.

For any all of these RAID levels and metadata formats this class supports
full cycle of volume operations: reading, writing, creation, deletion,
disk removal and insertion, rebuilding, dirty shutdown detection
and resynchronization, bad sector recovery, faulty disks tracking,
hot-spare disks. For Intel and Promise formats there is support multiple
volumes per disk set.

Look graid(8) manual page for additional details.

Co-authored by:	imp
Sponsored by:	Cisco Systems, Inc. and iXsystems, Inc.
2011-03-24 21:31:32 +00:00