similar to: (preview) Whitepaper - ZFS Pools Explained - feedback welcome

Hi all, I need to install a virtual machine acting as a virtual storage server under CentOS 5.x (using kvm, xen, virtualbox or vmware). This virtual storage machine needs to server storage to another ESXi server and at the same time to the host where is installed. This is due to the limitations of hardware I have available. Both hosts needs to server several machines. It is very

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

Gents, We want to understand the mechanism of zfs a bit better. Q: what is the design/algorithm of zfs in terms of reclaiming unused blocks? Q: what criteria is there for zfs to start reclaiming blocks Issue at hand is an LDOM or zone running in a virtual (thin-provisioned) disk on a NFS server and a zpool inside that vdisk. This vdisk tends to grow in size even if the user writes and deletes

[ Wish there was a generic, active Linux "storage" mailing list out there -- something other than the kernel lists I mean ] To frame the discussion, we use VMware ESX (vSphere) quite a bit with NFS datastores. Often times with NetApp, but lately, more often with Solaris 10 + ZFS + SSD's for ZIL (intent log or write cache). The ZIL lets us use synchronous writes (safer) without

Hi, I''m looking to build a virtualized web hosting server environment accessing files on a hybrid storage SAN. I was looking at using the Sun X-Fire x4540 with the following configuration: - 6 RAID-Z vdevs with one hot spare each (all 500GB 7200RPM SATA drives) - 2 Intel X-25 32GB SSD''s as a mirrored ZIL - 4 Intel X-25 64GB SSD''s as the L2ARC. -

Hello, Has anyone out there been able to qualify the Proliant DL360 G7 for your Solaris/OI/Nexenta environments? Any pros/cons/gotchas (vs. previous generation HP servers) would be greatly appreciated. Thanks in advance! -Anh

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

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 I would like to know the blocksize of a particular file. I know the blocksize for a particular file is decided at creation time, in fuction of the write size done and the recordsize property of the dataset. How can I access that information?. Some zdb magic?. - -- Jesus Cea Avion _/_/ _/_/_/ _/_/_/ jcea at

Are any of you using the Intel 320 as ZIL? It''s MLC based, but I understand its wear and performance characteristics can be bumped up significantly by increasing the overprovisioning to 20% (dropping usable capacity to 80%). Anyone have experience with this? Ray

Recently, I''ve been reading through the ZIL/slog discussion and have the impression that a lot of folks here are (like me) interested in getting a viable solution for a cheap, fast and reliable ZIL device. I think I can provide such a solution for about $200, but it involves a lot of development work. The basic idea: the main problem when using a HDD as a ZIL device are the cache flushes

Anyone here using http://www.sonnettech.com/product/tempossd.html with a zfs-capable OS? Is e.g. OpenIndiana supported? Thanks.

Hello, How do you tell how much of your l2arc is populated? I''ve been looking for a while now, can''t seem to find it. Must be easy, as this blog entry shows it over time: http://blogs.sun.com/brendan/entry/l2arc_screenshots And follow up, can you tell how much of each data set is in the arc or l2arc? -- This message posted from opensolaris.org

Hi all, just after sending a message to sunmanagers I realized that my question should rather have gone here. So sunmanagers please excus ethe double post: I have inherited a X4140 (8 SAS slots) and have just setup the system with Solaris 10 09. I first setup the system on a mirrored pool over the first two disks pool: rpool state: ONLINE scrub: none requested config: NAME

Hello all, I am a complete newbie to OpenSolaris, and must to setup a ZFS NAS. I do have linux experience, but have never used ZFS. I have tried to install OpenSolaris Developer 134 on a 11TB HW RAID-5 virtual disk, but after the installation I can only use one 2TB disk, and I cannot partition the rest. I realize that maximum partition size is 2TB, but I guess the rest must be usable. For

Hi all I have a test system with snv134 and 8x2TB drives in RAIDz2 and currently no Zil or L2ARC. I noticed the I/O speed to NFS shares on the testpool drops to something hardly usable while scrubbing the pool. How can I address this? Will adding Zil or L2ARC help? Is it possible to tune down scrub''s priority somehow? Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 roy at

http://www.redhat.com/f/pdf/rhel/WHP0006US_Execshield.pdf -------- Original Message -------- Subject: Whitepaper about the new security features in RHEL3 U3 Date: Tue, 31 Aug 2004 09:54:15 +0200 From: Arjan van de Ven <arjanv at redhat.com> Reply-To: Discussion of Red Hat Enterprise Linux 3 (Taroon) <taroon-list at redhat.com> To: taroon-list at redhat.com Hi, with the beta of

I have written a whitepaper for CIFS/9000 Server (Samba on HP-UX) that discusses some rudimentry usage recommendations for oplocks. Due to the recent discussion about oplocks on the list, I have edited the paper to be more generic for Samba on HP-UX and converted it to plain text. It's still 7 pages long, so it may be inappropriate to paste into an email. If there is any interest in it, I

1. Attempt to load Nexenta under 2.6.32.16-1.2.108.xendom0.fc13.x86_64 Xen 4.0.1-rc6-pre & 2.6.32.16-1.2.108.xendom0.fc13.x86_64 on top F13 [root@fedora13 NexentaStor-Community-3.0.2]# uname -a Linux fedora13 2.6.32.16-1.2.108.xendom0.fc13.x86_64 #1 SMP Fri Jul 23 17:09:30 MSD 2010 x86_64 x86_64 x86_64 GNU/Linux [root@fedora13 NexentaStor-Community-3.0.2]# xm create -c

Folks, The tag 4.0.1-rc3 has been added to http://xenbits.xensource.com/xen-4.0-testing.hg Please test! -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel

Attached is a 500KB read-only .doc file with a Samba and Terminal Server whitepaper. I have tried to hit every known issue and all available workarounds. If anyone has comments or suggestions, let me know. JT has it, so it should end up in the next How-To. Sorry about the file format, but the .pdf was 2.5MB, which I thought was too big to post. Eric Roseme Hewlett-Packard