ZFS disk overhead issues

Hi,
Been experimenting with zfs and I need some guidance. Here is my setup:
4 whole disks used for ZFS raidz1
c1d0 110GB usable
c1d1 230GB usable
c2d0 230GB usable
c3d0 230GB usable
# zpool list
NAME SIZE USED AVAIL CAP HEALTH ALTROOT
pool 446G 221G 225G 49% ONLINE -
# zfs list
NAME USED AVAIL REFER MOUNTPOINT
pool 166G 163G 48.6K /pool
pool/vault 166G 163G 166G -
Here are my questions:
1. Why is the pool size only 446G instead of 570G?
2. Why does zfs list only show 329GB?
Very confused.. Please help.
thx in advance.

If you use a mix of disk sizes for a raidz it treats them all as if they are the size of the smallest disk..

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Iscsi lun (devise/disk)naming issue

disk naming issue ,showing two different names in format and powermt output
in format the emc lun pseudo name comes as emcpower0d
in powermt o/p Pseudo nameas emcpower0a
bash-3.2# echo|format
Searching for disks...done
c7t0d0: configured with capacity of 599.98GB
c7t1d0: configured with capacity of 599.98GB
c7t2d0: configured with capacity of 599.98GB
c7t3d0: configured with capacity of 599.98GB
emcpower0d: configured with capacity of 599.98GB
AVAILABLE DISK SELECTIONS:
0. c0t5000CCA0258D2994d0 <SUN600G cyl 64986 alt 2 hd 27 sec 668> solaris
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1. c0t5000CCA025923A9Cd0 <SUN600G cyl 64986 alt 2 hd 27 sec 668> solaris
/scsi_vhci/disk@g5000cca025923a9c
2. c7t0d0 <DGC-RAID5-0223 cyl 61438 alt 2 hd 256 sec 80>
/iscsi/[email protected]%3Acx.fcnmm123301003.b10004,0
3. c7t1d0 <DGC-RAID5-0223 cyl 61438 alt 2 hd 256 sec 80>
/iscsi/[email protected]%3Acx.fcnmm123301003.b00002,0
4. c7t2d0 <DGC-RAID5-0223 cyl 61438 alt 2 hd 256 sec 80>
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5. c7t3d0 <DGC-RAID5-0223 cyl 61438 alt 2 hd 256 sec 80>
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6. emcpower0d <DGC-RAID5-0223 cyl 61438 alt 2 hd 256 sec 80>
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Pseudo name=emcpower0a
CLARiiON ID=FCNMM123301003 [tnpmsun4.persistent.co.in]
Logical device ID=6006016002053200401C39F6320DE211 [tnpmsun04_vol]
state=alive; policy=CLAROpt; queued-IOs=0
Owner: default=SP A, current=SP A Array failover mode: 1
==============================================================================
--------------- Host --------------- - Stor - -- I/O Path -- -- Stats ---
### HW Path I/O Paths Interf. Mode State Q-IOs Errors
==============================================================================
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4608 iscsi c7t3d0s0 SP A0 active alive 0 0
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Does anyone out there have best practice insights on how to deal with disk space issues on the database server? Can we copy the files onto different drives and then rename the drives? Will everything with the BPC application sync up again?
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Hi Grant,
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Hi Team,
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Hi,
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Best Regards,
Joyce
Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Subscriber Support, contact [email protected]

Zfs disk add gone wrong?

I allocated a freshly built clariion lun and added it to a zfs disk pool, [ zpool add nfs01zp emcpower2a ]
However the usable space didn't increase.
My guess is I was supposed to format the drive first? Does ZFS only use the space in Partition 0? I thought it grabbed the disk and partitioned it for me.
partition> p
Current partition table (original):
Total disk cylinders available: 58622 + 2 (reserved cylinders)
Part Tag Flag Cylinders Size Blocks
0 root wm 0 - 31 128.00MB (32/0/0) 262144
1 swap wu 32 - 63 128.00MB (32/0/0) 262144
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7 unassigned wm 0 0 (0/0/0) 0
emcpower2a is the new lun. I
root@gla-nfs01:/disk1/dist> zpool status -v
pool: nfs01zp
state: ONLINE
scrub: none requested
config:
NAME STATE READ WRITE CKSUM
nfs01zp ONLINE 0 0 0
c3t500601683022431Ed1s0 ONLINE 0 0 0
emcpower2a ONLINE 0 0 0
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It shows that slice 0 is root, so it thinks its bootable, which I'm assuming should not be the case since you added this device to an already-active pool and its not the default rpool. As suggested, you can use zpool replace - use zpool offline zpoolname diskname to take the disk offline, remove the disk (and replace with another, or reattach to this system or another and format it separately without placing it in a pool), then replace the disk physically into the system, run zpool replace zpoolname diskname, zpool online zpoolname diskname and allow it to resilver. If you don't see increased disk capacity, you may have to use zpool export zpoolname and zpool import zpoolname to see the capacity of the pool increase with zpool list. Usually just doing the replace will format it automatically for you but I don't know if it uses the partitioning already in place for the other devices, or some default, or what. This is why you may want to reformat it separately.
There is a zpool property called autoreplace - if it is set to ON, it may resilver automatically without having to use zpool replace. Check the pool properties with zfs get all zpoolname. If it doesn't show up in the list, then your hardware doesn't support that property.
If you re-partition separately you can put all of the space on slice 0, just not labeled as root, or spread it out to the other partitions (0,1,3,4,5,6). Is this SPARC or x86? On x86 there will be 9 partitions after it is formatted for Solaris, slice 2 represents the whole disk and slice 8 is for the boot record only.
Also I believe that the new disk must be the same size or larger than the disk its replacing.

ZFS email and disk monitoring issues

Hello ,
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Disk Repair Issue on iMac G4 Flat-Panel

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Any thoughts? I swear I have tried everything!

Thanks, but it looks like I have a few more hurdles to overcome before ugrading
As suggested by the Mac Tech from the store, I was able to successfully reinstall OSX on the drive that he magically partitioned and got working for me. I had no issues there.
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However, when I boot up normally, I still get the flashing Finder/Question Mark folder icon that continues forever and never boots. I've searched the forums and tried all the options listed here: http://docs.info.apple.com/article.html?artnum=58042
Nothing has worked. The only other suggestions I have seen indicate hard drive failure and the need for replacement. But, I JUST ran the diagnostic on my hard drive and it came back without errors. Unless the diagnostics are wrong, I would assume my hard drive is fine.
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Interesting Twist to the disk failed issue.

Hello,
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Hi Jeff,
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Disk Utility Issues Wait to Install Leopard

Dear fellow Mac users,
Rather than a question, this is a recommendation to those who are wondering whether to install Leopard now or to wait until it gets really stable.
My experience in installing Leopard has not been positive and I chose to revert to Tiger. After discovering several issues and going to the "Genius Bar" of the local Apple Store, I fortunately have been able to restore all my previous settings.
The loss has been mostly time and money, and they frightened me up suggesting that I had to change my hard drive. For those who might experience similar problems, let me provide some details.
1. Installation of Leopard
After carefully making a bootable backup of my HD on an external drive, I installed Leopard choosing the Option "Erase and install." This occurred without visible glitch. After updating the system to its latest version, I migrated all my data and settings. The result was an incredibly slow system, completely useless. It cannot have been the results of my settings, because I also created a "clean" account called "Maintenance," with the same results. On the recommendation of the "Apple Genius" I also added 1 GB of memory, getting a total of 1.5 GB of RAM installed to the cost of $150. It did NOT improve the situation.
2. Disk Utility
Because I suspected problems with privileges, I tried to run the Disk Utility. The result was an endless spinning wheel. After waiting several hours, I had to force quit the application. Tried to run it from the install DVD of Leopard, with the same results. People at the Genius Bar also tried their disk utility after booting from an external drive, without any success. They diagnosed a probable failure of the hard drive and recommended that I replace it. Fortunately, I didn't trust this groundless recommendation and made a last attempt by erasing Leopard and reinstalling Tiger. Now it runs just fine, and there is not the slightest mechanical problem. Apparently, and I only discovered this today, the whole disk check procedure changed with Mac OS 10.5, and at this stage it is a complete mess, with enough bugs in Disk Utility to keep the developers busy for a couple of months. I came across discussions of this on the Mac FixIt Website.
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Best wishes for patience.

Nerowolfe,
I have installed Leopard and have had nothing but problems as well. Perhaps you can help me. I am ready to roll back to Tiger. These are just a few:
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2. I appear to get random hangs. I have a 160GB hard drive and 2GB memory. I have 42 GB space left on the hard drive....yet I continue to have random hangs, especially when I try to open disk utility
3. Spotlight just does not work, period
4. I keep finding locked folders. Right now my CS3 is locked and even after going into get info and unlocking it, it just locks back and I am unable to open the application. I am a photographer and have been unable to do any work for the past 2 weeks while I am messing around with my computer. Now I have Christmas photos to sort and can't access the photos on the external drives or even open CS3
I have searched the forums, tried many of the recommendations, but nothing is working for me....perhaps since you have been successful you could give me a hand with these issues.
I wait for help.......
Other than that, how do I uninstall Leopard and reinstall Tiger????

Shouldn't Disk Utility be able to repair all disk permission issues?

I am having some performance degradation issues on my 20 inch, 2.16 GHz Intel iMac so I tried to run repair disk permissions (after getting a clean bill of health from Verify Disk). The first two times I ran it, it must have made over 1000 repairs. I kept running it and it eventually got the number down to 29 to 30 lines in the repair log - but not without doing some peculiar things in the process. Subsequent runnings of Repair Disk Permissions report the same repairs - line for line - and I've run it at least 8 times now.
In the good old days, running Repair Disk Permissions would eventually give a clean bill of health. What gives?
Just for the fun of it, I ran Repair Disk Permissions on my brand new (relatively) 11" MacBook Pro. The log for the first run was at least a couple of hundred lines. The log for the second run was at least TWICE as long. I ran it two more times and - guess what - the repair log was almost identical to the log on my iMac, line for line. And additional runnings of Repair Disk Permissions didn't produce a different result.
I hope someone from Apple reads these posts because when things don't go right with their products and the tools they provide - more and more - don't work as expected, we have nowhere to turn to but to Apple to find a solution.
In the meantime, I would welcome any suggestions on what this all means.
Note: Both computer are running Snow leopard. The iMac has been updates to 10.6.8 and the latest Java update has been installed. The MacBook Pro is running 10.6.7 and has not had its Java updated. Both computers have 250 GB drives with at least 68 GB unused. The MB Pro has 4GB of RAM and the iMac 3GB.

Hate to burst your bubble but Apple does read these forums for problems.
Now that the others have replied that repairing permission is not the way to fix performance problems.
How much free space do you have on your system disk?
How large is your Desktop folder?
Either insufficient free space or an overly large Desktop folder can impact performance.
Allan

Repair Disk Permissions Issues

I'm not sure I am posting this in the correct community but here goes . . .
I have a 17" Macbook Pro running the latest version of Snow Leopard. It is almost 2 years old and I have 4 gb RAM.
Recently, it seems to be slowing down and I have to run repair disk permissions 2-3 times a week to recoup a little speed. I also delete my Firefox cache regularly to try to gain a little there. I do make a few videos in iMovie and initially I thought that was the problem but this week I have not really worked in iMovie much and it is still slow. There seems to be some issues in the log of the repair permissions. I hope they show in this image. I don't know what these mean or how to fix them. It is the "permissions differ" entries I am confused about.

You can ignore those permissions per support article
http://support.apple.com/kb/TA21090
Since you brought up iMove, I suspect your storage is nearly full as this most certainly causes the computer to slow down. video files are the biggest culprit.
Look in your Activity Monitor and reduce the drive space by copying to a external, Disk Utility HFS+ formatted external powered drive of unnecessary files so your boot drive is ideally below 50% filled (yea I know but the computer slows down after that) and not more than 75% filled.
Once you have done that. Get another newer external powered HFS drive and download the free Carbon Copy Cloner and clone the internal drive to the external.
Hold option and boot off the external clone, test it out then use Disk Utility to erase the internal and then reverse clone the external onto the internal, this will defragment and optimize your drive so the OS and programs are on the fast part of the drive, not the slow parts.
Reboot into the internal and run off of the free OnyX's maintainence and cleaning aspects and reboot.
http://www.titanium.free.fr/
Sir speedy machine here we come!
Now of course you may have other issues that could be causing your slow down, like not enough RAM or some sort of failed process or leftover program, tweaks or simply a slow Internet.
You can opt to simply reinstall OS X 10.6 ( by holding c and booting off the installer disk ) over your installed version (doesn't touch files or programs) then immediatly Software Updating until clear, that will clean anything hanging out in OS X.
If you still have slowdowns, then it's in what geeks call "User land" basically something installed outside of root, like a program or only runs in user, not in OS X.
For that you need to create a new user, transfer your files via the Shared Drop and wean yourself off the old user and finally delete it. Also install all new versions of your third party programs removing the originals first.
That should do it.

Disk Repair Issue

Hey guys,
I'm trying to figure out if I need my start up disk to fix my following problem or not, or if I can fix it regardless.
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Anyone have any ideas? I want to prevent any sort of issues later on down the road and I don't have my disk on me at college right now. Thanks in advance!

Repairing the Hard Drive and Permissions
Boot from your OS X Installer disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Installer menu (Utilities menu for Tiger and Leopard.) After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the installer. Now shutdown the computer for a couple of minutes and then restart normally.
If DU reports errors it cannot fix, then you will need Disk Warrior (4.0 for Tiger, and 4.1 for Leopard) and/or TechTool Pro (4.6.1 for Leopard) to repair the drive. If you don't have either of them or if neither of them can fix the drive, then you will need to reformat the drive and reinstall OS X.

Disk partition issue.Cant allocate the free space for windows.ls help.

I have created a partition for OS X (200GB journaled, encrypted) and also left 51GB unallocated for Boot Camp later on.
After I successfully installed OS X 10.9, I wanted to install Windows 8.1 with Boot Camp. But Boot Camp only wants to shrink the Macintosh HD partition, and doesn't want to use the free space left on the drive. So I switched to Disk Utility, to try it that way. But in Disk Utility I wasn't able to create a new partition (if I press the 'partition' button it just doesn't do anything).
Next, I tried to switch of File Vault 2, let it decrypt itself, restart, and then try it again in internet recovery mode. But still, I cannot expand the Macintosh HD-partition or create a new partition.
Disk Utility log:
2014-09-04 00:42:31 +0200: Preparing partitioning: 'APPLE SSD SM256E Media'
Also, Disk Utility tells me there is 200.000.000.000 bytes of 200.000.000.000 bytes used, and 0 bytes of free space. Even though not even half of the drive is colored blue (which displays the amount of data on the drive). Finder tells me only 88GB is used.
I used the new installation for no longer than half a day, so there can't be issues that data is spread over the whole volume. Disk Utility can't find any problems, and tells me the disk and all of her volumes are okay (in green texts).
I also tried to start from a windows-install-usb, and tried to make a partition of the 'unallocated space', but then Windows tells me that it fails because the volume is part of the 'GPT partition style'.
What do I have to do to repartition my volumes!?
I'm using a MacBook Pro Retina 15" (MacBook Pro 10,1) with a 256GB SSD (251GB according to OS X).

As you're finding, a limitation of basic disk is that it only allows 4 primary partitions or 3 primary partitions and an extended partition.
http://technet.microsoft.com/en-us/library/dd163549.aspx
For information on converting basic to dynamic as well as considerations prior to doing so, consult this article. It should help you make a decision whether or not you want to convert the disk:
http://technet.microsoft.com/en-us/library/dd163552.aspx
If you decide to convert, get a backup so that no matter what you're covered. Not that it's risky, but better safe than sorry.

Hard disk partition issue and space issue

Hello i was trying to do a partition on my hard disk on my macbook pro retina. Wen i go to disk utility and try it says i need to repair the disk. I used command r in reboot and repaired but still having issues. When i look at space i get two different space available on macintosh HD. Here are the pictures you will see the space available is different depending what i choose. I am confused. Any help is appreciated. Here are the pics.

When you boot using Cmd-R, you're booting from a hidden Recovery Partition. That partition is using part of the space that is the size difference you're seeing between the Media line (upper picture) and the boot partition line. You can turn on the Debug Menu which shows the extra partitions using these directions.
I'm not sure but I suspect the issue may be that your boot partition is encrypted.

PBG4 with 'missing / dissapearing' disk space issue

My wife's powerbook appears to have 'missing' hard disk space and I can't figure out why. Here is the information from System Profiler about her only hard drive in the computer.
Capacity: 74.41 GB
Available: 6.91 GB
Writable: Yes
File System: Journaled HFS+
The issue is that when I click on her hard drive icon in the Finder view I see 4 items:
- Applications (4.92 GB)
- Library (2.45 GB)
- System (1.07 GB)
- Users (24.17 GB)
This totals 32.61 GB of used disk space
The hard drive is 74.41 GB
So I should have 41.80 GB of free space
Why do I only have 6.91 GB?
Where is the other 34.89 GB?
I have run disk utilities and repaired permissions. I have also run fsck by booting while holding apple-S. I've looked at the logs in /var/logs and nothing is bigger than 2MB.
Anyone have any ideas?
Thanks.

We upgraded the OS to 10.5 and the issue is gone.

ZFS disk overhead issues

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