08-02-2017
ZFS is striping data on the top three vdevs.
There is way to guess which one it will select for a given single record write but on average, writes will be balanced on all devices.
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1. Solaris
Ok, so I have a remote system (7 states away) that's using SDS to manage the two 18 gig disks. /, swap, /var, /home, and /opt.
The mirroring procedure I created uses installboot to ensure there's a bootblk on both disks of an SDS mirror.
The system has a problem booting (can't write to... (21 Replies)
Discussion started by: BOFH
21 Replies
2. Solaris
Hi,
Ii am facing the belwo problem:
d50: Mirror
Submirror 0: d30
State: Needs maintenance
Submirror 1: d40
State: Needs maintenance
Pass: 1
Read option: roundrobin (default)
Write option: parallel (default)
Size: 212176648 blocks (101 GB)
d30:... (3 Replies)
Discussion started by: sag71155
3 Replies
3. Infrastructure Monitoring
Here are the details.
cnjr-opennms>root$ zfs list
NAME USED AVAIL REFER MOUNTPOINT
openpool 20.6G 46.3G 35.5K /openpool
openpool/ROOT 15.4G 46.3G 18K legacy
openpool/ROOT/rds 15.4G 46.3G 15.3G /
openpool/ROOT/rds/var 102M ... (3 Replies)
Discussion started by: pupp
3 Replies
4. Linux
How can I add additional mirrors to my CENTOS distro, according to this page AdditionalResources/Repositories - CentOS Wiki there are few fedora project repositories I'd like to add any of them but I don't know how?
Thank you in advance (0 Replies)
Discussion started by: c0mrade
0 Replies
5. Linux
Dear all,
CentOS 6
After executing "yum update -y" command I am facing this error. Please help me out.
thanks in advance. Full error & error code is given as follow:
... (7 Replies)
Discussion started by: saqlain.bashir
7 Replies
6. Solaris
Hi Guys,
I need a help with attaching the sub mirrors as it keep throwing errors.
I have done solaris live upgrade and it was succesful but it keeps throwing error only for root (s0) and swap (s1)when i try to attach them.
For rest of the partitions for slices 3,4,5 on target 1 are able to... (4 Replies)
Discussion started by: phanidhar6039
4 Replies
7. BSD
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)
Discussion started by: bstring
3 Replies
8. Solaris
All,
One-way mirror. Elements of the concat in Last-errd state. What would be the best way to correct it?
metastat -s db2test -pc
db2test/d220 p 5.0GB db2test/d200
db2test/d219 p 5.0GB db2test/d200
db2test/d218 p 5.0GB db2test/d200
db2test/d217 p 30GB db2test/d200... (0 Replies)
Discussion started by: ossupport55
0 Replies
9. Solaris
On an OmniOS server, I removed a single-disk pool I was using for testing.
Now, when I run zpool import it will show it as FAULTED, since that single disk not available anymore.
# zpool import
pool: fido
id: 7452075738474086658
state: FAULTED
status: The pool was last... (11 Replies)
Discussion started by: priyadarshan
11 Replies
LEARN ABOUT FREEBSD
zfsboot
ZFSBOOT(8) BSD System Manager's Manual ZFSBOOT(8)
NAME
zfsboot -- bootcode for ZFS on BIOS-based computers
DESCRIPTION
zfsboot is used on BIOS-based computers to boot from a filesystem in a ZFS pool. zfsboot is installed in two parts on a disk or a partition
used by a ZFS pool. The first part, a single-sector starter boot block, is installed at the beginning of the disk or partition. The second
part, a main boot block, is installed at a special offset within the disk or partition. Both areas are reserved by the ZFS on-disk specifi-
cation for boot use. If zfsboot is installed in a partition, then that partition should be made bootable using appropriate configuration and
boot blocks described in boot(8).
BOOTING
The zfsboot boot process is very similar to that of gptzfsboot(8). One significant difference is that zfsboot does not currently support the
GPT partitioning scheme. Thus only whole disks and MBR partitions, traditionally referred to as slices, are probed for ZFS disk labels. See
the BUGS section in gptzfsboot(8) for some limitations of the MBR scheme support.
USAGE
zfsboot supports all the same prompt and configuration file arguments as gptzfsboot(8).
FILES
/boot/zfsboot boot code binary
/boot.config parameters for the boot block (optional)
/boot/config alternative parameters for the boot block (optional)
EXAMPLES
zfsboot is typically installed using dd(1). To install zfsboot on the ada0 drive:
dd if=/boot/zfsboot of=/dev/ada0 count=1
dd if=/boot/zfsboot of=/dev/ada0 iseek=1 oseek=1024
If the drive is currently in use, the GEOM safety will prevent writes and must be disabled before running the above commands:
sysctl kern.geom.debugflags=0x10
zfsboot can also be installed in an MBR slice:
gpart create -s mbr ada0
gpart add -t freebsd ada0
gpart create -s BSD ada0s1
gpart bootcode -b /boot/boot0 ada0
gpart set -a active -i 1 ada0
dd if=/boot/zfsboot of=/dev/ada0s1 count=1
dd if=/boot/zfsboot of=/dev/ada0s1 iseek=1 oseek=1024
Note that commands to create and populate a pool are not shown in the example above.
SEE ALSO
dd(1), boot.config(5), boot(8), gptzfsboot(8), loader(8), zfsloader(8), zpool(8)
HISTORY
zfsboot appeared in FreeBSD 7.3.
AUTHORS
This manual page was written by Andriy Gapon <avg@FreeBSD.org>.
BUGS
Installing zfsboot with dd(1) is a hack. ZFS needs a command to properly install zfsboot onto a ZFS-controlled disk or partition.
BSD
September 15, 2014 BSD