Commit Graph

45 Commits

Author SHA1 Message Date
Pawel Jakub Dawidek
692fd5a7b9 MFp4: We have stronger 'lock already initialized' check now, so we can
reduce diff against the vendor by removing bzero of this mutex.
2007-04-24 16:45:42 +00:00
Bruce A. Mah
9100d31299 Mostly-cosmetic fixes in low-memory warning messages:
o Fix linewrap issues.

o Fix two typos (s/Recomended/Recommended/ and s/tunning/tuning/)

o Remove a couple of extra instances of the word "of".

o Update names of kmem_size variables.

Approved by:	pjd
2007-04-23 21:52:14 +00:00
Pawel Jakub Dawidek
cfda925270 Too much diff reduction. 'cmd' has to be u_long.
Reported by:	delphij
2007-04-23 13:47:49 +00:00
Pawel Jakub Dawidek
cc7cd831b2 MFp4: Reduce diff against vendor code:
- Move FreeBSD-specific code to zfs_freebsd_*() functions in zfs_vnops.c
  and keep original functions as similar to vendor's code as possible.
- Add various includes back, now that we have them.
2007-04-23 00:52:07 +00:00
Pawel Jakub Dawidek
3698384259 Fix 'zpool status -v'. To get object number we should use ZFS_DIRENT_OBJ()
macro, as za_first_integer field also contains type. This should be fixed in
ZFS itself, but this bug is not visible on Solaris, because there, type is
not stored in za_first_integer. On the other hand it will be visible on
MacOS X.

Reported by:	Barry Pederson <bp@barryp.org>
2007-04-22 21:18:40 +00:00
Pawel Jakub Dawidek
77128a226d Fix st_rdev handling (implement it, actually).
Reported by:	gj
2007-04-22 21:16:15 +00:00
Pawel Jakub Dawidek
9de81c7273 MFp4:
@118370	Correct typo.

@118371	Integrate changes from vendor.

@118491	Show backtrace on unexpected code paths.

@118494	Integrate changes from vendor.

@118504	Fix sendfile(2). I had two ways of fixing it:
	1. Fixing sendfile(2) itself to use VOP_GETPAGES() instead of
	   hacking around with vn_rdwr(UIO_NOCOPY), which was suggested
	   by ups.
	2. Modify ZFS behaviour to handle this special case.

	Although 1 is more correct, I've choosen 2, because hack from 1
	have a side-effect of beeing faster - it reads ahead MAXBSIZE
	bytes instead of reading page by page. This is not easy to implement
	with VOP_GETPAGES(), at least not for me in this very moment.

	Reported by:	Andrey V. Elsukov <bu7cher@yandex.ru>

@118525	Reorganize the code to reduce diff.

@118526	This code path is expected. It is simply when file is opened with
	O_FSYNC flag.

	Reported by:	kris
	Reported by:	Michal Suszko <dry@dry.pl>
2007-04-21 12:02:57 +00:00
Pawel Jakub Dawidek
32371d2025 MFp4: Fix automatic snapshot mount when unprivileged user does lookup
on a snapshot directory:
- Remove PRIV_VFS_MOUNT check - regular users can mount snapshots
  via lookups on snapshot directory.
- Reset mount credential to kcred, so user won't be able to unmount
  the snapshot.
- Reset owner uid.
- Unlock vnode in case of a failure.

Reported by:	simokawa
2007-04-18 15:24:48 +00:00
Pawel Jakub Dawidek
f2c9a576db MFp4: We check for PRIV_VFS_MOUNT already in mount(2) syscall and we don't
want to do the check when snapshot is automatically mounted by an
      unprivileged user doing lookup on a snapshot directory.
2007-04-18 15:22:07 +00:00
Pawel Jakub Dawidek
35e8a7fad7 Simplify. 2007-04-17 21:58:34 +00:00
Pawel Jakub Dawidek
a1bcf4dc7b - Fix a leftover - vfs_mount_alloc() is now exported properly.
This fixes stange panics when listing .zfs/snapshot/ directory for me.
  Reported by:	simokawa
  Reported by:	Johan Hendriks <Johan@double-l.nl>
- Hide cache_purge() under FREEBSD_NAMECACHE like in other files.
- Protect mnt_flag with mount interlock.
2007-04-17 21:16:34 +00:00
Pawel Jakub Dawidek
39db4c6e0f Ignore hostid check for root-on-ZFS configurations. Making hostid available
before the root is mounted is tricky and having it in /boot/ is not really
desire.

Reported by:	Zephiris <zephiris@gmail.com>
2007-04-17 17:57:34 +00:00
Pawel Jakub Dawidek
8cb195f758 Uncomment forgotten check. Without this check in-place, ZFS will panic on
unload instead of returning EBUSY. This check tells if there are mounted
ZFS file systems or not. We can't unload if there are mounted file systems.

Reported by:	Andrey V. Elsukov <bu7cher@yandex.ru>
2007-04-16 10:23:24 +00:00
Pawel Jakub Dawidek
7ae6548e62 MFp4: Start DNLC after desiredvnodes variable is initialized.
Before this change if zfs.ko was loaded by the loader, DNLC was
      automatically disabled.

Reported by:	Zephiris <zephiris@gmail.com>
2007-04-15 09:10:17 +00:00
Pawel Jakub Dawidek
87e89536f1 Fix RAID-Z resilvering.
Obtained from:	OpenSolaris
2007-04-14 20:50:14 +00:00
Pawel Jakub Dawidek
d48078479c MFp4: Hmm, it seems to work now. 2007-04-14 15:01:50 +00:00
Pawel Jakub Dawidek
8aff52ca4e MFp4: Use max_ncpus, which is used in other places in the code. 2007-04-14 12:33:47 +00:00
Pawel Jakub Dawidek
8870baf005 MFp4: Add more debug, so we can see if zpool.cache was loaded or why it
wasn't loaded.
2007-04-14 12:23:03 +00:00
Pawel Jakub Dawidek
dbd490e0e2 MFp4: Allow to tune vfs.zfs.debug from loader.conf. 2007-04-14 12:21:06 +00:00
Pawel Jakub Dawidek
c98fbf0418 MFp4: - Allow to tune number of spa_zio_* threads.
- Reduce default number of spa_zio_* threads to N*spa_zio_issue
	  plus N*spa_zio_intr threads per ZIO type, where N is the number
	  of CPUs.
	- Put ZIO type number in thread's name.
2007-04-14 12:20:06 +00:00
Pawel Jakub Dawidek
bd59d85850 Fix overflow, which was causing endless loops when 32bit machine had more
than 2GB of RAM. This was because our physmem is long and 'physmem*PAGESIZE'
can be negative for more than 2GB of memory.

Reported by:	Andrey V. Elsukov <bu7cher@yandex.ru>

It is not yet tested by Andrey, so there can be other problems, but this
was definiately a bug, so I'm committing a fix now.
2007-04-13 18:50:03 +00:00
Pawel Jakub Dawidek
f0bc5ac3e1 Fix vnodes starvation caused by DNLC (ZFS name cache):
- Tune number of namecache entires better (based on desiredvnodes).
- Handle vfs_lowvnodes event by releasing requested number of name cache
  entries, but no less than 5%.

Reported by:	simokawa
2007-04-13 08:42:01 +00:00
Pawel Jakub Dawidek
6704017a15 MFp4: Synchronize with vendor (mostly 'zfs rename -r'). 2007-04-12 23:16:02 +00:00
Pawel Jakub Dawidek
1da61b3665 MFp4: Bring back comments.
Requested by:	jhb
2007-04-12 23:14:25 +00:00
Wojciech A. Koszek
f7caeade24 strchr() and strrchr() are already present in the kernel, but with less
popular names. Hence:

- comment current index() and rindex() functions, as these serve the same
  functionality as, respectively, strchr() and strrchr() from userland;
- add inlined version of strchr() and strrchr(), as we tend to use them more
  often;
- remove str[r]chr() definitions from ZFS code;

Reviewed by:	pjd
Approved by:	cognet (mentor)
2007-04-10 21:42:12 +00:00
Pawel Jakub Dawidek
1b6e2c02fe MFp4: Allow to set zfs_recover via vfs.zfs.recover from /boot/loader.conf. 2007-04-10 12:54:19 +00:00
Pawel Jakub Dawidek
5b9528e2d4 MFp4: Hide under '#ifdef _KERNEL' only what's really needed. 2007-04-10 12:52:14 +00:00
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
24bda1641f Instead of detecting if lock is already initialized based on standard 1 bit
check, use more accurate 13 bits check. We had too many false-positives with
the standard check.

Reported by:	mlaier
2007-04-09 01:05:31 +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
bdebccf9b9 Extend kobj compatibility KPI to support operating on files before and
after the root file system is mounted.
This is one of the changes that will allow to put root file system on ZFS.
2007-04-08 23:57:08 +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