How to split a zfs/zpool mirror for backout purposes?
Hello,
I am upgrading Veritas from 5.1 to 6.0.1/6.0.5 in a Solaris 10 u8 server with OS mirrored (rpool) in zfs/zpool configuration.
I need to split it to have a quick way to backout in case of failure (make splitted mirror side bootable for a quick revert, like booting from it). I remember that I did that in SVM or when OS drive was encapsulated in VxVM, but don't know how to do it in zfs/zpool.
Is it possible to create a Mirror with zfs ??
I'm experimented user with Solstice Disk suite.
Or Sun Volume manager or veritas volume manager.
But, i would like switch from Disksuite to Zfs.
All my mirrored disks. (1 Reply)
I've looked a little but haven't found a solid answer, assuming there is one.
What's better, hardware mirroring or ZFS mirroring? Common practice for us was to use the raid controllers on the Sun x86 servers. Now we've been using ZFS mirroring since U6. Any performance difference? Any other... (3 Replies)
Hi All,
I am trying to read zpool.cache file to find out pool information like pool name, devices it uses and all properties.
File seems to be in packed format.I am not sure how to unpack it.
But from opensolaris code base we can see that they have used libz for uncompromising this file, but... (0 Replies)
I am trying to test simple zfs functionality on a FreeBSD 8.2 VM. When I try to run a 'zpool create' I receive the following error:
# zpool create zfspool /dev/da0s1a
cannot create 'zfspool': no such pool or dataset
# zpool create zfspool /dev/da0
cannot create 'zfspool': no such pool or... (3 Replies)
Hallo,
Using a zpool mirror; is there a way to set something like a primary storage / preferred vdevs / read-first devices like it was in disksuite using "metaparam -r " or the "vxvol rdpol " to define a preferred plex in VxVM? Will ZFS always use round-robin?
In our example we want to use a... (3 Replies)
running VM server for Sparc on a Solaris 11 server. I have a Guest LDOm that had two seperate zpools running, one for the zones and one for the OS. The OS was corrupted and had to be replaced. The zones zfs file system is intact I think. I still have access to the disk and can still see it in... (3 Replies)
Hi everyone,
I'm hoping someone can help me out here. I've googled lots and don't think I can find an easy answer to this.
We're in the process of upgrading Solaris from v10 5/08 to v10 9/10. The zpools for luns are currently at version 10, and I understand Solaris v10 9/10 has support for... (3 Replies)
So,
We have a Netapp storage solution. We have Sparc T4-4s running with LDOMS and client zones in the LDOMS, We are using FC for storage comms. So here's the basic setup
FC luns are exported to the primary on the Sparc box. using LDM they are then exported to the LDOM using vdisk. at the... (4 Replies)
Discussion started by: os2mac
4 Replies
LEARN ABOUT FREEBSD
zfsloader
ZFSLOADER(8) BSD System Manager's Manual ZFSLOADER(8)NAME
zfsloader -- kernel bootstrapping final stage
DESCRIPTION
zfsloader is an extended variant of loader(8) with added support for booting from ZFS. This document describes only differences from
loader(8).
ZFS FEATURES
zfsloader supports the following format for specifying ZFS filesystems which can be used wherever loader(8) refers to a device specification:
zfs:pool/filesystem:
where pool/filesystem is a ZFS filesystem name as described in zfs(8).
If /etc/fstab does not have an entry for the root filesystem and vfs.root.mountfrom is not set, but currdev refers to a ZFS filesystem, then
zfsloader will instruct kernel to use that filesystem as the root filesystem.
ZFS COMMAND EXTENSIONS
lsdev [-v]
Lists ZFS pools in addition to disks and partitions. Adding -v shows more ZFS pool details in a format that resembles zpool status
output.
lszfs filesystem
A ZFS extended command that can be used to explore the ZFS filesystem hierarchy in a pool. Lists the immediate children of the
filesystem. The filesystem hierarchy is rooted at a filesystem with the same name as the pool.
FILES
/boot/zfsloader zfsloader itself.
EXAMPLES
Set the default device used for loading a kernel from a ZFS filesystem:
set currdev=zfs:tank/ROOT/knowngood:
SEE ALSO gptzfsboot(8), loader(8), zfs(8), zfsboot(8), zfsloader(8), zpool(8)HISTORY
The zfsloader first appeared in FreeBSD 7.3.
AUTHORS
This manual page was written by Andriy Gapon <avg@FreeBSD.org>.
BSD September 15, 2014 BSD