9 More Discussions You Might Find Interesting
1. UNIX for Beginners Questions & Answers
Hi All,
How do we calculate the zfs cache value from Solaris 11.3 ?? I normally use memstat but learnt that is not a good practice. Any other way to get the value ? (2 Replies)
Discussion started by: jayadanabalan
2 Replies
2. Solaris
Hi,
kstat -p -m zfs -n arcstats -s size returns
zfs:0:arcstats:size 8177310584
this values is approx (7.61 GB)
but my Physical Memory size is only 6144 Megabytes.
Can this happen ?
if yes, then how can I find free memory on the system.
BTW, I ran the kstat commands from a Non... (2 Replies)
Discussion started by: sapre_amit
2 Replies
3. AIX
Hello Everyone,
I have a AIX 5.2 and saw the following entry in the error report in one of my servers.
IDENTIFIER TIMESTAMP T C RESOURCE_NAME DESCRIPTION
FFDFB692 0705111911 P H sisraid0 BATTERY PACK FAILURE
Now, we're ready to replace the battery pack but I heard I need to... (0 Replies)
Discussion started by: blakedaddy
0 Replies
4. Linux
Hi All,
could any one point out any open source test-suites for "File cache" testing and as well as performance test suites for the same. Currently my system is up with Linux/ext4.
Regards
Manish (0 Replies)
Discussion started by: hmanish
0 Replies
5. Solaris
Greetings Forumers!
I have a Solaris 10u9 M5000 with 32GB RAM and have noticed the ZFS arc cache is consuming large amount of memory. Here's what I see on my system:
# echo ::memstat|mdb -k
Page Summary Pages MB %Tot
------------ ---------------- ... (9 Replies)
Discussion started by: bluescreen
9 Replies
6. Solaris
Hi All,
I am trying to read zpool.cache file to find out pool information like pool name, devices it uses and all properties.
File seems to be in packed format.I am not sure how to unpack it.
But from opensolaris code base we can see that they have used libz for uncompromising this file, but... (0 Replies)
Discussion started by: shailesh_111
0 Replies
7. Solaris
We are having a server running zfs root with 64G RAM and the system has 3 zones running oracle fusion app and zfs cache is using 40G memory as per
kstat zfs:0:arcstats:size. and system shows only 5G of memory is free rest is taken by kernel and 2 remaining zones.
Now my problem is that... (2 Replies)
Discussion started by: fugitive
2 Replies
8. Linux
Hi all
I saw in Microsoft web site www.SysInternals.com a tool called CoreInfo from able to print out on screen the size of the Data and Instruction caches of your processor, the Locigal to Physical Processor mapping, the number of the CPU sockets. etc..
Do you know if in Linux is available a... (2 Replies)
Discussion started by: manustone
2 Replies
9. UNIX for Advanced & Expert Users
hi,
What is the difference between UBC cache and Metadata cache ? where can i find UBC cache Hits and Metadata cache Hits in hp-ux?
Advanced thanx for the help. (2 Replies)
Discussion started by: sushaga
2 Replies
ZFS-FUSE(8) [FIXME: manual] ZFS-FUSE(8)
NAME
zfs-fuse - ZFS filesystem daemon
SYNOPSIS
zfs-fuse [--pidfile filename] [--no-daemon] [--no-kstat-mount] [--disable-block-cache] [--disable-page-cache] [--fuse-attr-timeout SECONDS]
[--fuse-entry-timeout SECONDS] [--log-uberblocks] [--max-arc-size MB] [--fuse-mount-options OPT,OPT,OPT...]
[--min-uberblock-txg MIN] [--stack-size=size] [--enable-xattr] [--help]
DESCRIPTION
This manual page documents briefly the zfs-fuse command.
zfs-fuse is a daemon which provides support for the ZFS filesystem, via fuse. Ordinarily this daemon will be invoked from system boot
scripts.
OPTIONS
This program follows the usual GNU command line syntax, with long options starting with two dashes (`-'). A summary of options is included
below. For a complete description, see the Info files.
-h --help
Show summary of options.
-p filename --pidfile filename
Write the daemon's PID to filename after daemonizing. Ignored if --no-daemon is passed. filename should be a fully-qualified path.
-n --no-daemon
Stay in foreground, don't daemonize.
--no-kstat-mount
Do not mount kstats in /zfs-kstat
--disable-block-cache
Enable direct I/O for disk operations. Completely disables caching reads and writes in the kernel block cache. Breaks mmap() in ZFS
datasets too.
--disable-page-cache
Disable the page cache for files residing within ZFS filesystems. Not recommended as it slows down I/O operations considerably.
-a SECONDS --fuse-attr-timeout SECONDS
Sets timeout for caching FUSE attributes in kernel. Defaults to 0.0. Higher values give a 40% performance boost.
-e SECONDS --fuse-entry-timeout SECONDS
Sets timeout for caching FUSE entries in kernel. Defaults to 0.0. Higher values give a 10000% performance boost but cause file
permission checking security issues.
--log-uberblocks
Logs uberblocks of any mounted filesystem to syslog
-m MB --max-arc-size MB
Forces the maximum ARC size (in megabytes). Range: 16 to 16384.
-o OPT... --fuse-mount-options OPT,OPT,OPT...
Sets FUSE mount options for all filesystems. Format: comma-separated string of characters.
-u MIN --min-uberblock-txg MIN
Skips uberblocks with a TXG < MIN when mounting any fs
-v MB --vdev-cache-size MB
adjust the size of the vdev cache. Default : 10
--zfs-prefetch-disable
Disable the high level prefetch cache in zfs. This thing can eat up to 150 Mb of ram, maybe more
--stack-size=size
Limit the stack size of threads (in kb). default : no limit (8 Mb for linux)
-x --enable-xattr
Enable support for extended attributes. Not generally recommended because it currently has a significant performance penalty for many
small IOPS
-h --help
Show this usage summary.
REMARKS ON PRECEDENCE
Note that the parameters passed on the command line take precedence over those supplied through /etc/zfs/zfsrc.
BUGS
/CAVEATS
The path to the configuration file (/etc/zfs/zfsrc) cannot at this time be configured.
Most existing packages suggest settings can be set at the top of their init script. These get frequently overridden by a (distribution
specific) /etc/default/zfs-fuse file, if it exists. Be sure to look at these places if you want your changes to options to take effect.
The /etc/zfs/zfsrc is going to be the recommended approach in the future. So, packagers, please refrain from passing commandline parameters
within the initscript (except for --pid-file).
SEE ALSO
zfs (8), zpool (8), zdb(8), zstreamdump(8), /etc/zfs/zfsrc
AUTHOR
This manual page was written by Bryan Donlan bdonlan@gmail.com for the Debian(TM) system (but may be used by others). Permission is granted
to copy, distribute and/or modify this document under the terms of the GNU General Public License, Version 2 any later version published by
the Free Software Foundation, or the Common Development and Distribution License.
Revised by Seth Heeren zfs-fuse@sehe.nl
On Debian systems, the complete text of the GNU General Public License can be found in /usr/share/common-licenses/GPL. The text of the
Common Development and Distribution Licence may be found at /usr/share/doc/zfs-fuse/copyright
COPYRIGHT
Copyright (C) 2010 Bryan Donlan
[FIXME: source] 2010-06-09 ZFS-FUSE(8)