search for: zvol

How can I set up a ZVOL that''s accessible by non-root users, too? The intent is to use sparse ZVOLs as raw disks in virtualization (reducing overhead compared to file-based virtual volumes). Thanks, -mg This message posted from opensolaris.org

Team, **Please respond to me and my coworker listed in the Cc, since neither one of us are on this alias** QUICK PROBLEM DESCRIPTION: Cu created a dataset which contains all the zvols for a particular zone. The zone is then given access to all the zvols in the dataset using a match statement in the zoneconfig (see long problem description for details). After the initial boot of the zone everything appears fine and the localzone zvol dev files match the globalzone zvol dev fil...

The `lofiadm'' man page describes how to export a file as a block device and then use `mkfs -F pcfs'' to create a FAT filesystem on it. Can''t I do the same thing by first creating a zvol and then creating a FAT filesystem on it? Nothing I''ve tried seems to work. Isn''t the zvol just another block device? -- -Gary Mills- -Unix Group- -Computer and Network Services-

Hi list, I''ve did some tests and run into a very strange situation.. I created a zvol using "zfs create -V" and initialize an sam-filesystem on this zvol. After that I restored some testdata using a dump from another system. So far so good. After some big troubles I found out that releasing files in the sam-filesystem doesn''t create space on the underlying zvo...

Hi, am I doing something wrong, ZFS does not support that or there is a bug that zvol clone does not show up under /dev/zvol after creating it from other zvol snapshot? # zfs list -t all | grep local local 136G 76.8G 144K none local/home 117G 76.8G 117G /home local/vm 18.4G 7...

Hello, I was doing performance testing, validating zvol performance in particularly, and found that zvol write performance to be slow ~35-44MB/s at 1MB blocksize writes. I then tested the underlying zfs file system with the same test and got 121MB/s. Is there any way to fix this? I really would like to have compatible performance between the zfs filesy...

I''ve upgraded my system from ufs to zfs (root pool). By default, it creates a zvol for dump and swap. It''s a 4GB Ultra-45 and every late night/morning I run a job which takes around 2GB of memory. With a zvol swap, the system becomes unusable and the Sun Ray client often goes into "26B". So I removed the zvol swap and now I have a standard swap partition....

.... or something to brighten everyone''s Friday. This is just a heads up since I suspect others will run into it. bob Consider the possibilities of a device named star. I added devices from the global zone to the bug zone in the usual way and rebooted the zone: <device match="/dev/zvol/rdsk/bug/devices/*"/> And I got this device: root at bug-[16:06]-> ls -l /dev/zvol/rdsk/bug/devices total 0 crw------- 1 root sys 256, 204 Nov 9 16:03 * root at bug-[16:06]-> Just to be sure the devices were there .... root at xenon-[16:07]-> ls /dev/zvol/rdsk/bug/de...

Hi, I have a question, let''s say I have a zvol named vol1 which is a clone of a snapshot of another zvol (its origin property is tank/myvol at mysnap). If I send this zvol to a different zpool through a zfs send does it send the origin too that is, does an automatic promotion happen or do I end up whith a broken zvol? Best regards. Maurilio....

> I tried to copy a 8GB Xen domU disk image from a zvol device > to an image file on an ufs filesystem, and was surprised that > reading from the zvol character device doesn''t detect "EOF". > > On snv_66 (sparc) and snv_73 (x86) I can reproduce it, like this: > > # zfs create -V 1440k tank/floppy-img > > # d...

I assume that a zvol has a vtoc. What tags are supported? Thanks, Brian -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mail.opensolaris.org/pipermail/zfs-discuss/attachments/20070427/57e1a64f/attachment.html>

...2 60gb. As part of my work, I have used it both as a RAW device (cxtxdxp1) and wrapped partition 1 with a virtualbox created VMDK linkage, and it works like a champ. :) Very happy with that. I then tried creating a new zpool using partition 2 of the disk (zpool create c2d0p2) and then carved a zvol out of that (30GB), and wrapped *that* in a vmdk. Still works OK and speed is good(ish) - but there are a couple of things in particular that disturb me: - Sync writes are pretty slow - only about 1/10th of what I thought I might get (about 15MB/s). ASync writes are fast - up to 150MB/s or mo...

I''ve been seeing read and write performance pathologies with Linux ext3 over iSCSI to zvols, especially with small writes. Does running a journalled filesystem to a zvol turn the block storage into swiss cheese? I am considering serving ext3 journals (and possibly swap too) off a raw, hardware-mirrored device. Before I do (and I''ll write up any results) I''d like to know...

I''ve been experimenting with a two system setup in snv_134 where each system exports a zvol via COMSTAR iSCSI. One system imports both its own zvol and the one from the other system and puts them together in a ZFS mirror. I manually faulted the zvol on one system by physically removing some drives. What I expect to happen is that ZFS will fault the zvol pool and the iSCSI stack will...

...other type (vmdk:sparse by default) in order to be used as a vdisk. Currently, there is no support for exporting a vmdk 1.1 optimized stream file. Thanks, Susan ------------------------------ Examples: Here are the interfaces for import/export/convert: # vdiskadm help import import - import a zvol, raw file, or virtual disk USAGE: vdiskadm import [-fnpqm] [-x <type>] -d <file|zvol|dsk> [-t <type[:opt]>] vdname EXAMPLE: vdiskadm import -d /downloads/image.vmdk /export/new_guests/disk1 ---- The [-fnpqm] flags are unchanged from the original vdiskadm import and are us...

Experts, I''m installing Oracle 9i on Solaris 10 11/06(update 3),I created some zfs volumes which will be used by oracle data file,as: # zfs create -V 200m ora_pool/controlfile01_200m # zfs create -V 800m ora_pool/system_800m ... # ls -l /dev/zvol/rdsk/ora_pool lrwxrwxrwx 1 root root 39 Apr 11 12:23 controlfile01_200m -> ../../../../devices/pseudo/zfs at 0:1c,raw lrwxrwxrwx 1 root root 39 Apr 11 13:34 system_800m -> ../../../../devices/pseudo/zfs at 0:7c,raw (Please note above,it''s just a link fi...

-bash-3.2# zpool export exchbk cannot remove device links for ''exchbk/exchbk-2'': dataset is busy this is a zvol used for a comstar iscsi backend: -bash-3.2# stmfadm list-lu -v LU Name: 600144F0EAC0090000004A0A4F410001 Operational Status: Offline Provider Name : sbd Alias : /dev/zvol/rdsk/exchbk/exchbk-1 View Entry Count : 1 LU Name: 600144F0EAC0090000004A1307D20001 Opera...

I''m trying to add extra zvols to a Solaris10 DomU, sv_113 Dom0 I can use virsh attach-disk <name> <zvol> hdb --device phy to attach the zvol as c0d1. Replacing hdb by hdd gives me c1d1 but then that is it. Being able to attach several more zvols would be nice but even being able to get at c1d0 would be useful...

Hello zfs-discuss, What would you rather propose for ZFS+ORACLE - zvols or just files from the performance standpoint? -- Best regards, Robert mailto:rmilkowski at task.gda.pl http://milek.blogspot.com

Hi, as Richard Elling wrote earlier: "For more background, low-cost SSDs intended for the boot market are perfect candidates. Take a X-25V @ 40GB and use 15-20 GB for root and the rest for an L2ARC. For small form factor machines or machines with max capacity of 8GB of RAM (a typical home system) this can make a pleasant improvement over a HDD-only implementation." For the upcoming