similar to: Preparing to compare Solaris/ZFS and FreeBSD/ZFS performance.

This question is concerning ZFS. We have a Sun Fire V890 attached to a EMC disk array. Here''s are plan to incorporate ZFS: On our EMC storage array we will create 3 LUNS. Now how would ZFS be used for the best performance? What I''m trying to ask is if you have 3 LUNS and you want to create a ZFS storage pool, would it be better to have a storage pool per LUN or combine the 3

Hello list, someone (actually neil perrin (CC)) mentioned in this thread: http://mail.opensolaris.org/pipermail/zfs-discuss/2009-December/034340.html that is should be possible to import a pool with failed log devices (with or without data loss ?). >/ />/ Has the following error no consequences? />/ />/ Bug ID 6538021 />/ Synopsis Need a way to force pool startup when

I have historically noticed that in ZFS, when ever there is a heavy writer to a pool via NFS, the reads can held back (basically paused). An example is a RAID10 pool of 6 disks, whereby a directory of files including some large 100+MB in size being written can cause other clients over NFS to pause for seconds (5-30 or so). This on B70 bits. I''ve gotten used to this behavior over NFS, but

Is it true that Solaris 10 u4 does not have any of the nice ZIL controls that exist in the various recent Open Solaris flavors? I would like to move my ZIL to solid state storage, but I fear I can''t do it until I have another update. Heck, I would be happy to just be able to turn the ZIL off to see how my NFS on ZFS performance is effected before spending the $''s. Anyone

I was messing around with a ramdisk on a pool and I forgot to remove it before I shut down the server. Now I am not able to mount the pool. I am not concerned with the data in this pool, but I would like to try to figure out how to recover it. I am running Nexenta 3.0 NCP (b134+). I have tried a couple of the commands (zpool import -f and zpool import -FX llift) root at

Hi, I''m running SunOS Release 5.10 Version Generic_118855-36 64-bit and in [b]/etc/system[/b] I put: [b]set zfs:zfs_nocacheflush = 1[/b] And after rebooting, I get the message: [b]sorry, variable ''zfs_nocacheflush'' is not defined in the ''zfs'' module[/b] So is this variable not available in the Solaris kernel? I''m getting really poor

Is there any way to increase the ZFS performance? -- This message posted from opensolaris.org

Hi, could anyone give recommendations (or share experience) regarding using ZFS: - FreeBSD 7-Stable (amd64 with 8GB RAM) + special tuning necessary (apart from increasing kernel memory to 1 or more GB for ZFS) - Samba 3.2 + ACLs possible directly under ZFS? + recommended compile options? - NFS - email (imap) - jails (I have seen some problems exist with using snaphots within

Joseph Little wrote: > I''d love to "vote" to have this addressed, but apparently votes for > bugs are no available to outsiders. > > What''s limiting Stanford EE''s move to using ZFS entirely for our > snapshoting filesystems and multi-tier storage is the inability to > access .zfs directories and snapshots in particular on NFSv3 clients.

Just posted: http://blogs.sun.com/roch/entry/nfs_and_zfs_a_fine ____________________________________________________________________________________ Performance, Availability & Architecture Engineering Roch Bourbonnais Sun Microsystems, Icnc-Grenoble Senior Performance Analyst 180, Avenue De L''Europe, 38330, Montbonnot Saint

On Fri, Apr 11, 2008 at 06:39:00PM -0700, George Wilson wrote: > Solaris Installation Guide > System Administration Guide: Basic > ZFS Administration Guide > System Administration Guide: Devices and File Systems Where can I get the updated guides? > For further information, visit our OpenSolaris page at: > >

Hello zfs-discuss, Relatively low traffic to the pool but sync takes too long to complete and other operations are also not that fast. Disks are on 3510 array. zil_disable=1. bash-3.00# ptime sync real 1:21.569 user 0.001 sys 0.027 During sync zpool iostat and vmstat look like: f3-1 504G 720G 370 859 995K 10.2M misc 20.6M 52.0G 0 0

Hello, freebsd-stable. Does somebody use some software RAID5 on FreeBSD in real production system? I want to build storage server for my home: RAW photos, multi-layer PhotoShop files and FLAC-encoded music consume a lot of space, and they should be availible both from desktop & notebook. Also, all photo-content is unique, so I need some insuranse from single HDD crash. I understand,

I recently got a new SSD (ocz vertex LE 50gb) It seems to work really well as a ZIL performance wise. My question is, how safe is it? I know it doesn''t have a supercap so lets'' say dataloss occurs....is it just dataloss or is it pool loss? also, does the fact that i have a UPS matter? the numbers i''m seeing are really nice....these are some nfs tar times before

My google-fu is coming up short on this one... I didn''t see that it had been discussed in a while ... What is the status of ZFS support for TRIM? For the pool in general... and... Specifically for the slog and/or cache??? -------------- next part -------------- An HTML attachment was scrubbed... URL:

Hi, as I have learned from the discussion about which SSD to use as ZIL drives, I stumbled across this article, that discusses short stroking for increasing IOPs on SAS and SATA drives: http://www.tomshardware.com/reviews/short-stroking-hdd,2157.html Now, I am wondering if using a mirror of such 15k SAS drives would be a good-enough fit for a ZIL on a zpool that is mainly used for file

I have three zpools on a server and want to add a mirrored pair of ssd''s for the ZIL. Can the same pair of SSDs be used for the ZIL of all three zpools or is it one ZIL SLOG device per zpool? -- This message posted from opensolaris.org

Hi All, I have bfu''ed to net-virt_xb-21_snv_81_021308. The dladm command on my machine does not have create-etherstub option. Please let me know what could be the issue. Thanks Khushal

Bfu 91 to 92 looks good Proceed with xVM upgrade . After running:- # sunos.hg/bin/build-all nondebug bash-3.2# cd packages-nondebug bash-3.2# pwd /usr/tmp/packages-nondebug bash-3.2# ls -l total 20 drwxr-xr-x 4 root root 512 Jun 21 08:57 SUNWlibvirt drwxr-xr-x 4 root root 512 Jun 21 08:57 SUNWlibvirtr drwxr-xr-x 4 root root 512 Jun 21 08:57 SUNWurlgrabber

Hi folks, (Long time no post...) Only starting to get into this one, so apologies if I''m light on detail, but... I have a shiny SSD I''m using to help make some VirtualBox stuff I''m doing go fast. I have a 240GB Intel 520 series jobbie. Nice. I chopped into a few slices - p0 (partition table), p1 128GB, p2 60gb. As part of my work, I have used it both as a RAW