similar to: zfs send of a cloned zvol

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-

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

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

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 76.8G 144K

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. The

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

> 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 > > # dd if=/dev/zvol/dsk/tank/floppy-img

-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:

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 filesystem and the zfs zvols. # first test is a

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

ZVOL was recently converted to use range locking, but it seems the comment below wasn''t updated: /* * There must be no buffer changes when doing a dmu_sync() * because * we can''t change the data whilst calculating the checksum. * A better approach than a per zvol rwlock would be to lock * ranges. */ -- Pawel Jakub Dawidek http://www.wheel.pl

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>

Hey all - Time for my silly question of the day, and before I bust out vi and dtrace... If there a simple, existing way I can observe the read / write / IOPS on a per-zvol basis? If not, is there interest in having one? Cheers! Nathan.

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

I''m just wondering if anyone has tried this, and what the performance has been like. Scenario: I''ve got a bunch of v20z machines, with 2 disks. One has the OS on it, and the other is free. As these are disposable client machines, I''m not going to mirror the OS disk. I have a disk server with a striped mirror zpool, carved into a bunch of zvols, each exported via

What does it mean for the reported value of a zvol volsize to be less than the product of used and compressratio? For example, # zfs get -p all home1/home1mm01 NAME PROPERTY VALUE SOURCE home1/home1mm01 type volume - home1/home1mm01 creation 1254440045 - home1/home1mm01 used 14902492672

I''ve looked for anything I can find on the topic, but there does not appear to be anything documented. Can a ZVOL be expanded? In particular, can a ZVOL sharded via iscsi be expanded? Thanks, Charles

Hi. I'm moving some of my geli installation to a new machine. On an old machine it was running UFS. I use ZFS on a new machine, but I don't have an encrypted main pool (and I don't want to), so I'm kinda considering a way where I will make a zpool on a zvol encrypted by geli. Would it be completely insane (should I use UFS instead ?) or would it be still valid ? Thanks. Eugene.

Rick McNeal and I have been working on building support for sharing ZVOLs as iSCSI targets directly into ZFS. Below is the proposal I''ll be submitting to PSARC. Comments and suggestions are welcome. Adam ---8<--- iSCSI/ZFS Integration A. Overview The goal of this project is to couple ZFS with the iSCSI target in Solaris specifically to make it as easy to create and export ZVOLs

I created a xen domU and using the Virtual Machine Manager. This created a large file on a zfs filesystem (in /var/lib/xen/images) containing the virtual disk image. Is there a better way to create a virtual disk? Does zpool/zfs allow to create special devices/filesystems with better I/O performance than a file over a zfs space? -- This message posted from opensolaris.org