|
|
Sponsored Content
Operating Systems
Solaris
Several questions about ZFS
Post 302903690 by mlody94 on Thursday 29th of May 2014 04:18:52 AM
05-29-2014
Several questions about ZFS
Hi guys! I am student from poland and I am preparing my assignment about Solaris 11 cloud computing capabilities. 
I am writing about ZFS now, and as I am quite new to this stuff I have several question (I prefere to have deep understanding of what I am doing, instead of just rewriting the documentation...). I was using a little bit the Red Hat's LVM so I will do some comparations here.
1. ZFS is a file system, and a volume manager "in one"?
2. What is the difference between LVM and ZFS? ZFS creates a pool(LVMs volume group) of disks(LVMs physical volumes) and from this pool administrators can create ZFS file systems (LVMs logical volumes). At this point I dont see any differences. And rumours says that ZFS is actually better than LVM, why?
3. ZFS have lots of capabilities like deduplication, and it has the "monitoring" systems that prevents data from being incomplete - but this is at the expense of efficiency. (high cpu and memory utilization). So ZFS is rather a slow filesystem?
4. And a quote from the documentation, which I cant understand...
"The storage pool describes the physical characteristics of the storage (device layout, data redundancy, and so on) and acts as an arbitrary data store from which file systems can be created. "
What does the physical characteristics part exacly mean?
Thanks in advance!
Krzysztof
I am writing about ZFS now, and as I am quite new to this stuff I have several question (I prefere to have deep understanding of what I am doing, instead of just rewriting the documentation...). I was using a little bit the Red Hat's LVM so I will do some comparations here.
1. ZFS is a file system, and a volume manager "in one"?
2. What is the difference between LVM and ZFS? ZFS creates a pool(LVMs volume group) of disks(LVMs physical volumes) and from this pool administrators can create ZFS file systems (LVMs logical volumes). At this point I dont see any differences. And rumours says that ZFS is actually better than LVM, why?
3. ZFS have lots of capabilities like deduplication, and it has the "monitoring" systems that prevents data from being incomplete - but this is at the expense of efficiency. (high cpu and memory utilization). So ZFS is rather a slow filesystem?
4. And a quote from the documentation, which I cant understand...
"The storage pool describes the physical characteristics of the storage (device layout, data redundancy, and so on) and acts as an arbitrary data store from which file systems can be created. "
What does the physical characteristics part exacly mean?
Thanks in advance!
Krzysztof
Last edited by mlody94; 05-29-2014 at 05:20 AM.. Reason: set stupid title
|
|
9 More Discussions You Might Find Interesting
1. Homework & Coursework Questions
1.) I am to write scripts that will be phasetest folder in the home directory.
2.) The folder should have a set-up,phase and display files
I have written a small script which i used to check for the existing users and their password.
What I need help with:
I have a set of questions in a... (19 Replies)
Discussion started by: moraks007
19 Replies
2. Solaris
With Solaris 11 coming out with a requirement of ZFS on the root disk, I was curious to know who is using the Zeta File System now?
I have been using ZFS for the past year and don't plan to go back to UFS since ZFS is much more reliable and easier to maintain. (13 Replies)
Discussion started by: bluescreen
13 Replies
3. Solaris
Hi, I am nowusing ZFS since some weeks and now I have 2 questions:
1) in zpool I saw some disk added with the *s2 at the end, I have in mind that should not be ? is this right and if so can I get the *s2 disk out of the zpool ?
2) Zpool has still 2 spare disk but when I try to create a new... (6 Replies)
Discussion started by: manni2
6 Replies
4. Solaris
what are all the advantages of ZFS comparing to UFS SVM
what is the use of creating file system in a file system in ZFS (15 Replies)
Discussion started by: dinu
15 Replies
5. Solaris
Hello,
I want to migrate one of my ZFS root filesystem to a new disk on the same server. Can someone please guide me for the same? This is a Solaris 10 box running on Intel.
# df -h /setup
Filesystem size used avail capacity Mounted on
root/ROOT/zfsroot/setup
... (1 Reply)
Discussion started by: mahive
1 Replies
6. Solaris
Hi,
I need some advice please. I have this server with a couple of zpools, lets call them
pay_serv
ukb_pool
There are two zones attached to these pools. When I do a zfs list I see this
pay_serv 8.41G 265G 8.41G /pay_serv
ukb_pool 79.8G 194G 23K /ukb_pool
ukb_pool/temp_ps 9.11G... (4 Replies)
Discussion started by: giles.cardew
4 Replies
7. Solaris
Hi! I'm a new user... I'm looking for some informations about the ZDF file sytem... In my ubuntu box i have installed cryptkeeper, and i want to know if in Solaris 11 Express can find something similar... (3 Replies)
Discussion started by: Solarisutente
3 Replies
8. Solaris
Hello,
I just build a Solaris 10 server on an x86 box. I forgot to mirror the two disks when I install the OS. Can I get some help with this?
I have this
# zpool list
rpool 278G 5.77G 272G 2% ONLINE -
# zpool status
pool: online
state: ONLINE
scan: none requested
config:
... (12 Replies)
Discussion started by: bitlord
12 Replies
9. Solaris
Hi,
Recently we have new server T5 Oracle. We set up it for our database. For out database files we set one zfs filesystem. When i use iostat -xc the output as below. As you see the value for vdc4 is quite high.
extended device statistics cpu
device ... (32 Replies)
Discussion started by: tharmendran
32 Replies
LEARN ABOUT OPENSOLARIS
install-solaris
install-solaris(1M) install-solaris(1M) NAME
install-solaris - install the Solaris operating system SYNOPSIS
install-solaris install-solaris invokes the Solaris Install program. Depending on graphical capability and available memory at the time of invocation, install-solaris invokes either a text-based installer or a graphical installer. The following minimum requirements for physical memory dictate which features are available during installation: For SPARC machines: 128 MB Minimum physical memory for all installation types 128 MB Minimum physical memory required for windowing system 384 MB Minimum physical memory required for graphical-based installation For x86 machines: 256 MB Minimum physical memory for all installation types 256 MB Minimum physical memory required for windowing system 512 MB Minimum physical memory required for graphical-based installation In some cases, even if the minimum physical memory is present, available virtual memory after system startup can limit the number of fea- tures available. install-solaris exists only on the Solaris installation media (CD or DVD) and should be invoked only from there. Refer to the for more details. install-solaris allows installation of the operating system onto any standalone system. install-solaris loads the software available on the installation media. Refer to the for disk space requirements. Refer to the for more information on the various menus and selections. See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcdrom (Solaris instal- | | |lation media) | +-----------------------------+-----------------------------+ |Interface Stability |Evolving | +-----------------------------+-----------------------------+ pkginfo(1), install(1M), pkgadd(1M), attributes(5) It is advisable to exit install-solaris by means of the exit options in the install-solaris menus. 23 Sep 2005 install-solaris(1M)