Displaying 20 results from an estimated 1000 matches similar to: "How does zfs COW deal with ''..'' in brother directory?"
2006 Jan 03
4
zfs object sets and datasets
Hi All,
I am looking at trying to understand the conceptual model of how data is
grouped and partitioned within a storge pool. In looking at the on disk
document that Tabriz sent out a few weeks ago I see that object sets are
the grouping which ZFS uses to group objects that are related.
Specifially to aid in format and layout of like objects in to a set.
So, for example 1 potential object
2011 Nov 08
1
Single-disk rpool with inconsistent checksums, import fails
Hello all,
I have an oi_148a PC with a single root disk, and since
recently it fails to boot - hangs after the copyright
message whenever I use any of my GRUB menu options.
Booting with an oi_148a LiveUSB I had around since
installation, I ran some zdb traversals over the rpool
and zpool import attempts. The imports fail by running
the kernel out of RAM (as recently discussed in the
list with
2006 May 19
11
tracking error to file
In my testing, I''ve found the following error:
zpool status -v
pool: local
state: ONLINE
status: One or more devices has experienced an error resulting in data
corruption. Applications may be affected.
action: Restore the file in question if possible. Otherwise restore the
entire pool from backup.
see: http://www.sun.com/msg/ZFS-8000-8A
scrub: none requested
2011 Apr 05
2
Help to check data before putting it in a database
The example scene:
I have a database with stats about each goal made by my soccer team. This
database (a data frame in R) is organized in lines (goals) with a set of
columns containing data about these goals (player name, tactic position,
etc). For now, this database will be called "data.frame1".
What I need is to feed this "data.frame1" with new information about my team
2013 Feb 17
13
zfs raid1 error resilvering and mount
hi, i have raid1 on zfs with 2 device on pool
first device died and boot from second not working...
i try to get http://mfsbsd.vx.sk/ flash and load from it with zpool import
http://puu.sh/2402E
when i load zfs.ko and opensolaris.ko i see this message:
Solaris: WARNING: Can''t open objset for zroot/var/crash
Solaris: WARNING: Can''t open objset for zroot/var/crash
zpool status:
2007 May 09
5
Refactor zfs_zget()
Hi,
Since almost all operations in the FUSE low-level API identify files by inode
number, I''ve been using zfs_zget() to get the corresponding znode/vnode in
order to call the corresponding VFS function in zfs_vnops.c.
However, there are some cases when zfs_zget() behaves slightly different than
I need:
1) If zp->z_unlinked != 0 then zfs_zget() returns ENOENT. I need it to return
2006 Aug 25
4
Looking for confirmation.
Hi.
I''ve almost all file system functions working.
I started to run some heavy file system regression tests. They work. fsx
wasn''t able to break my port, but the test you can find here:
http://people.freebsd.org/~kan/fsstress.tar.gz
broke it. My kernel panics on this assertion (zfs_dir.c):
749: mutex_exit(&dzp->z_lock);
750:
751: error =
2009 Feb 02
8
ZFS core contributor nominations
The time has come to review the current Contributor and Core contributor
grants for ZFS. Since all of the ZFS core contributors grants are set
to expire on 02-24-2009 we need to renew the members that are still
contributing at core contributor levels. We should also add some new
members to both Contributor and Core contributor levels.
First the current list of Core contributors:
Bill
2006 Mar 03
5
flag day: ZFS on-disk format change
Summary: If you use ZFS, do not downgrade from build 35 or later to
build 34 or earlier.
This putback (into Solaris Nevada build 35) introduced a backwards-
compatable change to the ZFS on-disk format. Old pools will be
seamlessly accessed by the new code; you do not need to do anything
special.
However, do *not* downgrade from build 35 or later to build 34 or
earlier. If you do so, some of
1999 Jan 20
2
Installation of packages?
Dear r-helpers,
we have installation problems:
Successful installation of R-0.63 base package on Solaris 2.5.1 with the
SunSoft compilers f77, c version 4.2.
We habe problems with the installation of further packages e.g.
integrate from CRAN.
R code works but the shared objects built from fortran code do not find
the appropriate libs with functions like __pow_ii or __epx at runtime.
We tried
2006 Jan 04
8
Using same ZFS under different kernel versions
I build two zfs filesystems using b29 (from brandz).
I then re-installed solaris express b28, preserving the zfs filesystems.
When I tried to "zpool import" my zfs filesystems I got a kernel panic:
> debugging crash dump vmcore.0 (32-bit) from blackbird
> operating system: 5.11 snv_28 (i86pc)
> panic message:
> ZFS: bad checksum (read on /dev/dsk/c1d0p0 off 24d5e000: zio
2009 Dec 10
6
Confusion regarding ''zfs send''
I''m playing around with snv_128 on one of my systems, and trying to
see what kinda of benefits enabling dedup will give me.
The standard practice for reprocessing data that''s already stored to
add compression and now dedup seems to be a send / receive pipe
similar to:
zfs send -R <old fs>@snap | zfs recv -d <new fs>
However, according to the man page,
2009 May 20
5
ZFS userquota groupquota test
I have been playing around with osol-nv-b114 version, and the ZFS user
and group quotas.
First of all, it is fantastic. Thank you all! (Sun, Ahrens and anyone
else involved).
I''m currently copying over one of the smaller user areas, and setting up
their quotas, so I have yet to start large scale testing. But the
initial work is very promising. (Just 90G data, 341694 accounts)
Using
2006 Aug 17
7
in-kernel gzip compression
Hello zfs-discuss,
Is someone actually working on it? Or any other algorithms?
Any dates?
--
Best regards,
Robert mailto:rmilkowski at task.gda.pl
http://milek.blogspot.com
2010 Sep 17
3
ZFS Dataset lost structure
After a crash, in my zpool tree, some dataset report this we i do a ls -la:
brwxrwxrwx 2 777 root 0, 0 Oct 18 2009 mail-cts
also if i set
zfs set mountpoint=legacy dataset
and then i mount the dataset to other location
before the directory tree was only :
dataset
- vdisk.raw
The file was a backing device of a Xen VM, but i cannot access the directory structure of this dataset.
However i
2009 Aug 14
6
LZO versus LZJB
Hi
Some developers here said a long time ago that someone should show
the code for LZO compression support for ZFS before talking about the
next step. I made that code with a friend and we also made a little
benchmark to give a first impression:
http://denisy.dyndns.org/lzo_vs_lzjb/
I hope we made no technical error, but if you find something
not accurate, we will correct it.
Denis
--
This
2006 Jul 20
2
How can I watch IO operations with dtrace on zfs?
I have been using iosoop script (see http://www.opensolaris.org/os/community/dtrace/scripts/) written by Brendan Gregg to look at the IO operations of my application. When I was running my test-program on a UFS filesystem I could see both read and write operations like:
UID PID D BLOCK SIZE COMM PATHNAME
203803 4436 R 6016592 16384 diskio <none>
203803 4436 W 3448432
2003 Sep 12
1
levelplot
Dear helpers,
I have strange results with levelplot: The following lines of code produce a
figure with a strange gray horizontal line. Changing n to 9 the line vanishes
almost - it stays in the colorbar. Any ideas? The pixel geometry of the lower
half of the figure is wrong?
##############################
n<-8
xyz<-expand.grid(x=seq(1,n),y=seq(1,n))
z<-matrix(0,n,n)
2007 Feb 21
12
suggestion: directory promotion to filesystem
Not sure how technically feasible it is, but something I thought of while shuffling some files around my home server. My poor understanding of ZFS internals is that the entire pool is effectivly a tree structure, with nodes either being data or metadata. Given that, couldnt ZFS just change a directory node to a filesystem with little effort, allowing me do everything ZFS does with filesystems on
2006 Sep 11
95
Proposal: multiple copies of user data
Here is a proposal for a new ''copies'' property which would allow
different levels of replication for different filesystems.
Your comments are appreciated!
--matt
A. INTRODUCTION
ZFS stores multiple copies of all metadata. This is accomplished by
storing up to three DVAs (Disk Virtual Addresses) in each block pointer.
This feature is known as "Ditto Blocks". When