similar to: Using O_EXCL flag on /dev/zvol nodes

> 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

After multiple power outages caused by storms coming through, I can no longer access /dev/zvol/dsk/poolname, which are hold l2arc and slog devices in another pool I don''t think this is related, since I the pools are ofline pending access to the volumes. I tried running find /dev/zvol/dsk/poolname -type f and here is the stack, hopefully this someone a hint at what the issue is, I have

Hi, Can anyone explain the following to me? Two zpool devices points at the same data, I was installing osol 2008.11 in xVM when I saw that there already was a partition on the installation disk. An old dataset that I deleted since i gave it a slightly different name than I intended is not removed under /dev. I should not have used that name, but two device links should perhaps not

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

Hi Is there an interface to get/set properties for a zvol (given its /dev/ pathname) from the solaris kernel ? Also is there a way to register callbacks to get notified in a kernel module when a property changes for a zvol ? Thanks Sumit -- This messages posted from opensolaris.org

I''ve just pushed vdiskadm translate to the 3.3 vdisk repo. You can now translate data from one virtual disk data type to another without creating a virtual disk. This allows the user to use a vmdk file and directly translate the data into a zvol without having to import it first to a vdisk and then export it to the zvol. # vdiskadm help translate translate - translate virtual disk data

I''ve just pushed vdiskadm import/export/convert to the 3.3 vdisk and vbox repos. You can now import a disk image from a block device or file to a vdisk, convert (in place) to a different type of vdisk and export from a vdisk to a block device or file. I''ve also pushed the full vhd support (sparse and fixed) and the ability to import a vmdk 1.1 optimized stream file. An

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, im trying to attach another volume aka disk to win HVM, however it doesn''t seem to work: + xm block-attach win2008ss phy:/dev/zvol/dsk/pool1/win2008ss.dsk2 \ hdd:disk w 0 results in: elkner.sol ~ > + xm block-list win2008ss --long (0 (vbd (uuid 7cb8fadf-619d-dde6-bda9-dcc18023c7d5) (bootable 1) (devid 768) (driver paravirtualised)

Hi All: Using the following line, I am trying to install Scientific Linux (a RHEL derivative like CentOS), but the installer never sees my kickstart file : virt-install -n test-dev1 --ram=1024 --vcpus=2 --file=/dev/zvol/dsk/zfs_pool/xen/lss-kickstart1/root \ --file=/dev/zvol/dsk/zfs_pool/xen/lss-kickstart1/swap \ --file=/dev/zvol/dsk/zfs_pool/xen/lss-kickstart1/nfs \ --accelerate

Hi Folks, I was wondering if anyone has an pointers/suggestions on how I might increase disk performance of a HVM zvol-backed DomU? - this is my first DomU, so hopefully its something obvious Running bonnie++ shows the DomU''s performance to be 3 orders of magnitude worse than Dom0''s, which itself is half as good as when not running xVM at all (see bottom for bonnie++ results)

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

Hi and hello, I have a problem confusing me. I hope someone can help me with it. I followed a "best practise" - I think - using dedicated zfs filesystems for my virtual machines. Commands (for completion): [i]zfs create rpool/vms[/i] [i]zfs create rpool/vms/vm1[/i] [i] zfs create -V 10G rpool/vms/vm1/vm1-dsk[/i] This command creates the file system [i]/rpool/vms/vm1/vm1-dsk[/i] and the

A colleague just asked if zfs delegation worked with zvols too. Thought I''d give it a go and got myself in a mess (tank/linkfixer is the delegated dataset): root at non-global / # zfs create -V 500M tank/linkfixer/foo cannot create device links for ''tank/linkfixer/foo'': permission denied cannot create ''tank/linkfixer/foo'': permission denied Ok, so

Hi all, I fear I can't rely on "open (path, O_CREAT | O_EXCL)" behaviour on samba share. The libc's doc says: If both `O_CREAT' and `O_EXCL' are set, then `open' fails if the specified file already exists. This is guaranteed to never clobber an existing file. But this isn't probably true on network filesystems. When I run this tiny program on

Perhaps someone has ideas on this topic, a recent attempt to play with Xen was a reather unlucky event, all what I will be able to demonstrate on that system is a PV ONNV domU which ikely will not be very attractive to the audience :( HW: U40M2, 2 x 2 core AMD revF procs, 8GB MEM, Phonix BIOS 1.5 (latest) 1 x 200GB internal SATA drive SW: dom0 ONNV build 82, latest VirtManager from

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-

Hi, I double checked the configuration with xm and the "w!" option seems to be configured :-( I also upgraded to build 123, but also no change in behaviour. Thus is this a RAC 11.2 problem or is there a general problem using zvols as as shared disks for xVM domains ? (device (vbd (protocol x86_64-abi) (uuid 048d282d-da4c-2e0b-b9f4-f3f4cc0811c7)

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

Hi all! First off, if this has been discussed, please point me in that direction. I have searched high and low and really can''t find much info on the subject. We have a large-ish (200gb) UFS file system on a Sun Enterprise 250 that is being shared with samba (lots of files, mostly random IO). OS is Solaris 10u3. Disk set is 7x36gb 10k scsi, 4 internal 3 external. For several