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266 Commits

Author SHA1 Message Date
Pawel Jakub Dawidek
2d03e33170 Try to stabilize ZFS with regard to memory consumption: 
- Allow to shrink ARC down to 16MB (instead of 64MB).
- Set arc_max to 1/2 of kmem_map by default.
- Start freeing things earlier when low memory situation is detected.
- Serialize execution of arc_lowmem().

I decided to setup minimum ZFS memory requirements to 512MB of RAM and 256MB of
kmem_map size. If there is less RAM or kmem_map, a warning will be printed.
World is cruel, be no better. In other words: modern file system requires
modern hardware:)

From ZFS administration guide:

"Currently the minimum amount of memory recommended to install a Solaris
 system is 512 Mbytes. However, for good ZFS performance, at least one
 Gbyte or more of memory is recommended."
 2007-04-10 02:35:57 +00:00
Pawel Jakub Dawidek
52124c7f1c Reduce diff against vendor - we have now stronger check for "mutex already 
initialized", so we can go back to kmem_alloc().
 2007-04-10 02:19:12 +00:00
Pawel Jakub Dawidek
0404b7791b Remove unused #define. 2007-04-09 23:30:28 +00:00
Pawel Jakub Dawidek
33fc425c85 We don't have to wait for the root file system to be mounted anymore, now that 
kobj KPI supports operating on files loaded by the loader.
 2007-04-09 00:03:45 +00:00
Pawel Jakub Dawidek
5fc5d6ed61 Drop the Giant lock before calling zfs_domount(), which is held when 
mounting root file system.
 2007-04-09 00:02:11 +00:00
Pawel Jakub Dawidek
f92cb15e7b Move zpool.cache from /etc/zfs/ to /boot/zfs/, so we can keep it on 
dedicated /boot/ file system and use ZFS for the root file system.
 2007-04-08 23:59:39 +00:00
Pawel Jakub Dawidek
ffe54ff0ec MFp4: Synchronize with recent OpenSolaris changes. 2007-04-08 16:29:25 +00:00
Pawel Jakub Dawidek
425d75486e - Use 'name=value' so it can be properly recognized by devd(8). 
- Use only subclass as devd's type.
 2007-04-08 15:55:48 +00:00
Pawel Jakub Dawidek
61cfeccd58 Take vnode pointer and hold it under znode lock, so we won't race with 
zfs_reclaim(). This may or may not fix problem reported by kris, but it's
definiatelly better that way.
 2007-04-08 10:29:14 +00:00
Pawel Jakub Dawidek
3dc4488c91 Move atomic.S files to directories that better fit OpenSolaris directory 
layout.
 2007-04-07 23:54:54 +00:00
Pawel Jakub Dawidek
e321494eca Fix libzpool compilation. 
Reported by:	des
 2007-04-07 23:47:14 +00:00
Pawel Jakub Dawidek
9a691cb33a Limit the number of system taskq threads to the number of CPUs. 
They are only used when there is a need for reducing namecache.

Observed by:	kris, csjp
 2007-04-07 21:41:11 +00:00
Dag-Erling Smørgrav
29665eac3f Fix some type mismatches. 
Reviewed by:	pjd@
 2007-04-07 19:11:41 +00:00
Pawel Jakub Dawidek
639fdcd852 Allow to tune maximum and minimum memory used by ARC. 2007-04-07 19:10:50 +00:00
Pawel Jakub Dawidek
a583dae953 Add missing mutex_init() which was causing assertion panic when on clone 
destruction.

Reported by:	kris
 2007-04-07 11:04:37 +00:00
Pawel Jakub Dawidek
f0a75d274a Please welcome ZFS - The last word in file systems. 
ZFS file system was ported from OpenSolaris operating system. The code in under
CDDL license.

I'd like to thank all SUN developers that created this great piece of software.

Supported by:	Wheel LTD (http://www.wheel.pl/)
Supported by:	The FreeBSD Foundation (http://www.freebsdfoundation.org/)
Supported by:	Sentex (http://www.sentex.net/)
 2007-04-06 01:09:06 +00:00