similar to: What does ZFS modify a part of filesystem block?

Hi zfs-discuss, I have some questions about throttling on ZFS 1) I know that throttling is activating while one sync is waiting for another. (http://blogs.sun.com/roller/page/roch?entry=the_dynamics_of_zfs) Is it possible to throttle only selected processes (e.g. nfsd) ? 2) How can I obtain some statistics about it? I want to know how often throttling is activating on my host etc. 3) Is it

Hi, We''re doing some benchmarking at a customer (using IOzone) and for some specific small block random tests, performance of their X4500 is very poor (~1.2 MB/s aggregate throughput for a 5+1 RAIDZ). Specifically, the test is the IOzone multithreaded throughput test of an 8GB file size and 8KB record size, with the server physmem''d to 2GB. I noticed a couple of peculiar

Hello Sa?o! I found you here: http://mail.opensolaris.org/pipermail/zfs-discuss/2012-May/051546.html "How about reflashing LSI firmware to the card? I read on Dell''s spec sheets that the card runs an LSISAS2008 chip, so chances are that standard LSI firmware will work on it. I can send you all the required bits to do the reflash, if you like." I got Dell Perc H310 controller

HI, The question is a ZFS performance question in reguards to SAN traffic. We are trying to benchmark ZFS vx VxFS file systems and I get the following performance results. Test Setup: Solaris 10: 11/06 Dual port Qlogic HBA with SFCSM (for ZFS) and DMP (of VxFS) Sun Fire v490 server LSI Raid 3994 on backend ZFS Record Size: 128KB (default) VxFS Block Size: 8KB(default) The only thing

Looking for a little help, please. A contact from Oracle (Sun) suggested I pose the question to this email. We''re using ZFS on Solaris 10 in an application where there are so many directory-subdirectory layers, and a lot of small files (~1-2Kb) that we ran out of inodes (over 30 million!). So, the zfs question is, how can we see how many files & directories have been created in

Folks, While going through a quick tutorial on zfs, I came across a way to create zfs filesystem within a filesystem. For example: # zfs create mytest/peter where mytest is a zpool filesystem. When does this way, the new filesystem has the mount point as /mytest/peter. When does it make sense to create such a filesystem versus just creating a directory? # mkdir mytest/peter Thank you in

I have to backup many filesystems, which are changing and machines are heavy loaded. The idea is to backup online - this should avoid I/O read operations from disks, data should go from cache. Now I''m using script that does snapshot and zfs send. I want to automate this operation and add new option to zfs send zfs send [-w sec ] [-i <snapshot>] <snapshot> for example

This may be a dumb question, but is there a way to find out if an arbitrary filesystem is actually a zfs filesystem? Like if I were to write a script that needs to do different steps based on the underlying filesystem. Any pointers welcome. -- Jan Hendrik Mangold Sun Microsystems 650-585-5484 (x81371) "idle hands are the developers workshop" -------------- next part

Hi all, How to reserve a space on a zfs filesystem? For mkfiel or dd will write data to the block, it is time consuming. whiel "mkfile -n" will not really hold the space. And zfs''s set reservation only work on filesytem, not on file? Could anyone provide a solution for this? Thanks very much Vincent

I turned compression on for several ZFS filesystems and found performance was still fine. I turned gzip on and it was also fine and compression on certain filesystems is excellent. I realize all the files that were on the filesystem when compression=on did not get the benefit of gzip when I set compression=gzip. I would like everything to be compressed with gzip. What''s the easiest way

Hallo. Filesystem quotas used to work well under Solaris 9 and ufs filesystems on the Sparc platform even with two rules for the folders in the users home directories /home/group/user and the separate filesystem /var/mail holding the inboxes: plugin { quota = fs:Home-Verzeichnis:noenforcing quota2 = fs:INBOX:noenforcing:mount=/var/mail } Since we upgraded last year to Solaris 10

I managed to create a link in a ZFS directory that I can''t remove. Session as follows: # ls bayes.lock.router.3981 bayes_journal user_prefs # ls -li bayes.lock.router.3981 bayes.lock.router.3981: No such file or directory # ls bayes.lock.router.3981 bayes_journal user_prefs # /usr/sbin/unlink bayes.lock.router.3981 unlink: No such file or directory # find . -print

I had some trouble installing a zone on ZFS with S10u4 (bug in the postgres packages) that went away when I used a ZVOL-backed UFS filesystem for the zonepath. I thought I''d push on with the experiment (in the hope Live Upgrade would be able to upgrade such a zone). It''s a bit unwieldy, but everything worked reasonably well - performance isn''t much worse than straight

Hi, I want to send peices of a zfs filesystem to another system. Can zfs send peices of a snapshot? Say I only want to send over /app at today and not include /app/conf data while /app/conf is still apart of the /app at today snapshot? I say app/conf as an example, it could be webserver/http-webservername/config or a piece of a repository. I know once the receive -F option is added

Let me preface this by admitting that I''m a bonehead. I had a mirrored a zfs filesystem. I needed to use one of the mirrors temporarily so I did a zpool detach to remove the member (call it disk1) leaving disk0 in the pool. However, after the detach I mistakenly wiped disk0. So here is the question. I haven''t touched disk1 yet so the data is hopefully still there. Is there

Hi @all, with ZFS its recommended to create a new filesystem, for example for each user to give them a home directory. So far, so good. The homes should be under tank/export/home/staff and my intention is to restrict the ACL rights so only the user self can access his own home directory. I study the ZFS Admin Guide and found the aclmode and aclinherit options, IMHO for my intention the

Hello all, First off, i''m talking about a SXDE build 89. Sorry if that was discussed here before, but i did not find anything related on the archives, and i think is a "weird" issue... If i try to remove a specific file, i got: # rm file1 rm: file1: No such file or directory # rm -rf dir2 rm: Unable to remove directory dir2: Directory not empty Take a look: ------- cut

I have to estimate the following model for several group of observations : y(1-y) = p[1]*(x^2-y) + p[2]*y*(x-1) + p[3]*(x-y) with constraints : p[1]+p[3] >= 1 p[1]+p[2]+p[3]+1 >= 0 p[3] >= 0 I use the following code : func <- sum((y(1-y) - p[1]*(x^2-y) + p[2]*y*(x-1) + p[3]*(x-y))^2) estim <- optim( c(1,0,0),func, method="L-BFGS-B" , lower=c(1-p[3], -p[1]-p[3]-1,

>> Here's something I learned when working with the FreeNAS folks : >> ZFS can be configured to be case insensitive when >> you create the filesystem (NOTE - cannot be altered >> *after* the filesystem is created). >> zfs create -o casesensitivity=insensitive filesystem In this case, will ZFS preserve capitals in file and directory names if they are so created

Hello all... I''m migrating a nfs server from linux to solaris, and all clients(linux) are using read/write block sizes of 8192. That was the better performance that i got, and it''s working pretty well (nfsv3). I want to use all the zfs'' advantages, and i know i can have a performance loss, so i want to know if there is a "recomendation" for bs on nfs/zfs, or