Zfs snapshot of "zoned" ZFS dataset

I have a ZFS (e.g. tank/zone1/data) which is delegated to a zone as a dataset.
As root in the global zone, I can "zfs snapshot" and "zfs send" this ZFS:
zfs snapshot tank/zone1/data and zfs send tank/zone1/data without any problem. When I "zfs allow" another user (e.g. amanda) with:
zfs allow -ldu amanda mount,create,rename,snapshot,destroy,send,receivethis user amanda CAN DO zfs snapshot and zfs send on ZFS filesystems in the global zone, but it can not do these commands for the delegated zone (whilst root can do it) and I get a permission denied. A truss shows me:
ioctl(3, ZFS_IOC_SNAPSHOT, 0x080469D0)          Err#1 EPERM [sys_mount]
fstat64(2, 0x08045BF0)                          = 0
cannot create snapshot 'tank/zone1/data@test'write(2, " c a n n o t   c r e a t".., 53) = 53Which setting am I missing to allow to do this for user amanda?
Anyone experiencing the same?
Regards,
Marcel

Hi Robert,
Thanks for your response. I suspected this might be the case, but it seems like I get conflicting information from the Sun website. It still says recommended and security patches are free everywhere I looked except when I went to download them. We got this machine in October and I obtained and installed a recommended patch cluster as well as a bunch of ZFS patches (it might have even been early November, shortly before the update), using only a valid account with no contract.
It would have been nice to know the policy on patch clusters was changing shortly, since now I want to use the snapshots as a backup for users.
For us at least, an upgrade install would be a royal pain in the butt, since this machine is sitting in a data center in the basement and that would entail me signing in there and sitting on the floor while it installs from DVD media.

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thanks.

Does this mean that when new machines appear with zfs
support, OR when I can update my PROM, that I will be
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Hi guys,
I will really appreciate it if someone can answer this for me.
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985798 wrote:
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Our production database is on Sun/Solaris 10 (SunOS odin 5.10 Generic_127127-11 sun4u sparc SUNW,SPARC-Enterprise) with oracle 10.1.0 . It is about 1TB in size. We have also created our MOCK and DEVELOPMENT databases from the Production database. To save disk space, we created these databases as ZFS Snapshots/ZFS Clones at the OS level and are using less than 10GB each being clones as on now. Now I want to upgrade the production database from oracle 10.1 to 11.2 but I don't want to upgrade the MOCK and DEVELOPMENT databases for the time being and want them to continue to run as clones on 10.1. After upgrade, Prod will run from 11g oracle tree one one machine and MOCK/DEVL on 10g tree on another machine. Will the upgrade of Production from 10.1 to 11.2 INVALIDATE the cloned MOCK and DEVELOPMENT databases?? There might be data types/features in 11g which do not exist in 10g.
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http://docs.huihoo.com/opensolaris/solaris.../html/ch06.html
http://docs.huihoo.com/opensolaris/solaris...ml/ch06s02.html

Hi,
The mentioned links in the post is not working.
I would suggest u to raise an Official S.R. with http://support.oracle.com prior upgrading your database.
Also you can try this out with 10g db installation on TEST machine and create databases as ZFS Snapshots/ZFS Clones at the OS level for MOCK. Then upgrade the 10g database and test it.
Refer:
*429825.1 -- Complete Checklist for Manual Upgrades to 11gR1*
*837570.1 -- Complete Checklist for Manual Upgrades to 11gR2*
Regards,
X A H E E R

SunStorage 7110 + zfs snapshot

I have a snapshot of a zfs file system on a server and I am trying to send it to the storage array using this zfs command. Does anyone know why I get the output shown below?
zfs send testpool/[email protected] | ssh [email protected] zfs recv -F pool-0/[email protected]
aksh: invalid command "zfs recv -F pool-0/[email protected]"
aksh: invalid command "IûIûIÊ(Ê(IIIIf:ÿÿ Á!III:I:I:I:IûIIûIIIISISISISIÿIIIIIIIIIIIIIIIûIp}ûI A
@# |øI"
aksh: invalid command "Ûÿÿÿÿÿÿ"
aksh: invalid command "ûI"
This keeps repeating....I did a ctrl+c to stop it.

Hi Robert,
Thanks for your response. I suspected this might be the case, but it seems like I get conflicting information from the Sun website. It still says recommended and security patches are free everywhere I looked except when I went to download them. We got this machine in October and I obtained and installed a recommended patch cluster as well as a bunch of ZFS patches (it might have even been early November, shortly before the update), using only a valid account with no contract.
It would have been nice to know the policy on patch clusters was changing shortly, since now I want to use the snapshots as a backup for users.
For us at least, an upgrade install would be a royal pain in the butt, since this machine is sitting in a data center in the basement and that would entail me signing in there and sitting on the floor while it installs from DVD media.

Is there any way to refresh the zfs snapshot other than creating another on

Hi,
I want to use the zfs send / recv replication, after I create the snapshot and do send/ recv to the remote filesystem, is there any way to do send and recv from the same snapshot after making some changes to the original filesystem other than creating another snapshot every time before send / recv
Thanking you
Ushas Symon

No, you'd have to take another snapshot and then send it, but you don't need to save all the snapshots after you are done. If you script it out to take snapshots fairly often during the day, the amount of data would be small. You can also send to a file and then backup that file to tape or whatever, you wouldn't have to save a million snapshots. You can also look into OpenSolaris' Time Slider function.

Solaris 10 kernel patch upgrade

Hi all,
i am in a process of upgrading the kernel patch of a solaris 10 x64 machine, the present kernel patch is "5.10 Generic_144489-06 i86pc i386 i86pc" the updated kernel patch that i am going to upgrade to is patch "144501-19".
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Hello,
if you are having system filesystems (/ /usr /var ...) on software RAID1 devices, best practise is to split mirrors and have most recent actual copy of the system (or create current ZFS snapshot if using ZFS on root),patch it in single user mode or use Live Upgrade functionality and create alternate boot environment and patch the ABE on running system (you can find various info in Oracle Docs or get inspired by various blogs:http://nilesh-joshi.blogspot.com/2011/10/oracle-solaris-patching-using-live.html). I always patch kernel and other system components using PCA patching utility - have a look on project homepage http://www.par.univie.ac.at/solaris/pca/ it's really advanced and helpful tool. It can save you lot of time when solving dependecies and also downloading the patches.
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ZFS clones and snapshot... can't delete snapshot were clone is based on

root@solaris [/] # zfs list -r
NAME   USED AVAIL REFER MOUNTPOINT
home   100K 9,78G    21K /datahome
root@solaris [/] # zpool list
NAME   SIZE   USED AVAIL    CAP HEALTH ALTROOT
home 9,94G   108K 9,94G     0% ONLINE -
root@solaris [/] # zfs create home/test
root@solaris [/] # zfs snapshot home/test@today
root@solaris [/] # zfs clone home/test@today home/myclone
root@solaris [/] # zfs list -r
NAME              USED AVAIL REFER MOUNTPOINT
home              138K 9,78G    23K /datahome
home/myclone         0 9,78G    21K /datahome/myclone
home/test          21K 9,78G    21K /datahome/test
home/test@today      0      -    21K -
root@solaris [/] # zfs promote home/myclone
root@solaris [/] # zfs list -r
NAME                 USED AVAIL REFER MOUNTPOINT
home                 140K 9,78G    24K /datahome
home/myclone          21K 9,78G    21K /datahome/myclone
home/myclone@today      0      -    21K -
home/test               0 9,78G    21K /datahome/test
root@solaris [/] # zfs destroy home/myclone
cannot destroy 'home/myclone': filesystem has children
use '-r' to destroy the following datasets:
home/myclone@today
root@solaris [/] # zfs destroy home/myclone@today
cannot destroy 'home/myclone@today': snapshot has dependent clones
use '-R' to destroy the following datasets:
home/test
root@solaris [/] #Why can't I destroy a snapshot? home/myclone is now a volume that is not linked to home/test.
So I would expect to be able to delete the snapshot from myclone.
Maybe I misunderstand something about how this works or I have the wrong expectations.
I would expect a clone to be something like a copy that is independent of the volume being cloned.

The idea is that when you create a clone, it is lightweight and based on the snapshot. That's what makes it so fast. You're not copying every block in the filesystem. So the snapshot is what ties together the parent filesystem and the clone.
For the clone to be independent, you'd have to copy all the blocks. There's no option to do that within the clone process. So as long as both the parent filesystem and the clone filesystem are around, the snapshot has to exist as well.
Darren

Keeping mountpoints/attributes on a replicated (zoned=on) zfs filesystem

Hi,
I'm having to identical servers, one which is active and the other acts as a hot failover. Data on both servers should be identical. Both share the same IPs and hostnames. To ensure that I have data integrity I'm sending ZFS snapshots from the active server to the failover many times an hour, and one full snapshot every 24hrs.
The layout is like this (both servers are evidently identical)
global zone, mainly unused except by sysadmins, with one "production" zone
- in the zone I have a zpool :
- in the zpool I have pool/prodServer, mounted in /zones/prodSrv, which contains my production zone
- I also have pool/home-prodSrv , which is delegated to the zone, and mounted in /export/home in the zone.
It is important that I separate the /export/home from other data.
Since pool/home-prodSrv is set with the attribute zoned=on , it is not seen in the global with df -h (it is, of course seen with zfs list).
To replicate my data, in both global zones (active server and failover) I have a user called zfsman who sends / receive snapshots like this :
[from the active zone] :
sudo zfs snapshot pool/prodServer@full
ssh zfsman@FAILOVER sudo zfs destroy pool/prodServer (so that the full will succeed)
sudo zfs send pool/prodServer@full | ssh zfsman@FAILOVER sudo zfs recv pool/prodServer
Now, if I shutdown the active zone on the main server and start it up on the failover, I get a problem :
- pool/home-prodSrv is mounted over /export/home in the global zone
- quota/reservation/other attributes are unset
- pool/home-prodSrv is mounted in pool/prodServer in the production zone instead of /export/home
I tried this, from the active zone :
ssh zfsman@FAILOVER sudo zfs set mountpoint=/export/home pool/prodServer (it will complain that /export/home is already mounted, but no matter)
ssh zfsman@FAILOVER sudo zfs set zoned=on pool/prodServer
It works, but it just doesn't look/feel clean...
I'm obviously missing the way to keep the attributes on the receiving end as they are set in the sending zone.
Any idea, anybody, how to fix this ?
Regards,
Jeff
Edited by: J.F.Gratton on Nov 15, 2008 11:33 AM

Hi,
I'm having to identical servers, one which is active and the other acts as a hot failover. Data on both servers should be identical. Both share the same IPs and hostnames. To ensure that I have data integrity I'm sending ZFS snapshots from the active server to the failover many times an hour, and one full snapshot every 24hrs.
The layout is like this (both servers are evidently identical)
global zone, mainly unused except by sysadmins, with one "production" zone
- in the zone I have a zpool :
- in the zpool I have pool/prodServer, mounted in /zones/prodSrv, which contains my production zone
- I also have pool/home-prodSrv , which is delegated to the zone, and mounted in /export/home in the zone.
It is important that I separate the /export/home from other data.
Since pool/home-prodSrv is set with the attribute zoned=on , it is not seen in the global with df -h (it is, of course seen with zfs list).
To replicate my data, in both global zones (active server and failover) I have a user called zfsman who sends / receive snapshots like this :
[from the active zone] :
sudo zfs snapshot pool/prodServer@full
ssh zfsman@FAILOVER sudo zfs destroy pool/prodServer (so that the full will succeed)
sudo zfs send pool/prodServer@full | ssh zfsman@FAILOVER sudo zfs recv pool/prodServer
Now, if I shutdown the active zone on the main server and start it up on the failover, I get a problem :
- pool/home-prodSrv is mounted over /export/home in the global zone
- quota/reservation/other attributes are unset
- pool/home-prodSrv is mounted in pool/prodServer in the production zone instead of /export/home
I tried this, from the active zone :
ssh zfsman@FAILOVER sudo zfs set mountpoint=/export/home pool/prodServer (it will complain that /export/home is already mounted, but no matter)
ssh zfsman@FAILOVER sudo zfs set zoned=on pool/prodServer
It works, but it just doesn't look/feel clean...
I'm obviously missing the way to keep the attributes on the receiving end as they are set in the sending zone.
Any idea, anybody, how to fix this ?
Regards,
Jeff
Edited by: J.F.Gratton on Nov 15, 2008 11:33 AM

Cloning a ZFS rooted zone does a copy rather than snapshot and clone?

Solaris 10 05/08 and 10/08 on SPARC
When I clone an existing zone that is stored on a ZFS filesystem the system creates a copy rather than take a ZFS snapshot and clone as the documentation suggests;
Using ZFS to Clone Non-Global Zones and Other Enhancements
Solaris 10 6/06 Release: When the source zonepath and the target zonepath both reside on ZFS and are in the same pool,
zoneadm clone now automatically uses the ZFS clone feature to clone a zone. This enhancement means that zoneadm
clone will take a ZFS snapshot of the source zonepath and set up the target zonepathCurrently I have a ZFS root pool for the global zone, the boot environment is s10u6;
rpool 10.4G 56.5G 94K /rpool
rpool/ROOT 7.39G 56.5G 18K legacy
rpool/ROOT/s10u6 7.39G 56.5G 6.57G /
rpool/ROOT/s10u6/zones 844M 56.5G 27K /zones
rpool/ROOT/s10u6/zones/moetutil 844M 56.5G 844M /zones/moetutil
My first zone is called moetutil and is up and running. I create a new zone ready to clone the original one;
-bash-3.00# zonecfg -z newzone 'create; set autoboot=true; set zonepath=/zones/newzone; add net; set address=192.168.0.10; set physical=ce0; end; verify; commit; exit'
-bash-3.00# zoneadm list -vc
ID NAME STATUS PATH BRAND IP
0 global running / native shared
- moetutil installed /zones/moetutil native shared
- newzone configured /zones/newzone native shared
Now I clone it;
-bash-3.00# zoneadm -z newzone clone moetutil
Cloning zonepath /zones/moetutil...
I'm expecting to see;
-bash-3.00# zoneadm -z newzone clone moetutil
Cloning snapshot rpool/ROOT/s10u6/zones/moetutil@SUNWzone1
Instead of copying, a ZFS clone has been created for this zone.
What am I missing?
Thanks
Mark

Hi Mark,
Sorry, I don't have an answer but I'm seeing the exact same behavior - also with S10u6. Please let me know if you get an answer.
Thanks!
Dave

How to snapshot zfs volume

Hi All,
did anyone have expereience with ZFS volume snapshot and clone? what I am doing here is: create a zfs volume and present it as root disk to LDOM guest domain. I like to have the flexibility to snapshot and clone the volume before any maintenance. We have tested using image files already. We are comparing performance and maintenance complexity of using both image file and zfs volume.
Any suggestion is welcome.
Thanks,

Thanks! could you please provide more details? zfs snapshot of file system is straightforward. But to snapshot volumes (which underline are 0 & 1s), it does not seem to be that easy. FYI, the zfs volume is only partitioned inside guest domain. From ldom controller domain, prtvtoc shows only one slice. That means inside LDOM controller domain, this volume just looks like raw device.

Zfs set userquota doesn't work on upgraded datasets?

Greetings all,
I put all the latest patches on a Solaris 10 system with zfs to and upgraded the zpool to version 15 and zfs to version 4 so I could use user-based quotas. When I try to set a userquota on an existing dataset, it takes the command but doesn't set up the quota. If I create a new dataset, then I can assign quotas to it. Does the userquota not work on existing datasets that have been upgraded? Here are the commands that illustrate the problem:
# zfs list
NAME USED AVAIL REFER MOUNTPOINT
data 50.7G 145G 50.7G /data
# zpool upgrade
This system is currently running ZFS pool version 15.
All pools are formatted using this version.
# zfs upgrade
This system is currently running ZFS filesystem version 4.
All filesystems are formatted with the current version.
# zfs set userquota@finleyc=50G data
# zfs get userquota@finleyc data
NAME PROPERTY VALUE SOURCE
data userquota@finleyc - -
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# zfs set userquota@finleyc=50G data/test
# zfs get userquota@finleyc data/test
NAME PROPERTY VALUE SOURCE
data/test userquota@finleyc 50G local
# zfs destroy data/test
Any ideas? Thanks!
Tim

Can you repeat the test and, before erasing the dataset, send the output for
# zfs userspace data/testCheers
Andy

Snapshot zone and dataset

Hi,
I (try !!) to manage a X86-64 solaris computer. and I want to create à snapshot in a secondary zone..
That zone exist is ready and booted and I can login on it. So I use zfs snapshot koonytan/root/datatank to create the snapshot. And I got an error saying that there is no dataset for the snapshot. OK
I search for dataset and found in an oracle/sun documentation, that I have to use zonecfg to create the data set :
zonecfg -z koonytank
zonecfg:zion> add dataset
zonecfg:zion:dataset> set name=koonytank/root/dataset
zonecfg:zion:dataset> end
verrify, commit exit : no error.
Then I reboot the zone with zoneadm and I get en error "the zone koonytank" could not be verify. and the zone don't boot.
I have to remove the dataset declaration to reboot the zone.
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I thank you in advance
Pierre Léonard

Why do we require the reverse relation of rsign type 'A', what is the use of that?
So that all HR objects are linked in both way... depending on your reporting need you could start looking at org. structure from the bottom (e.g. from employee point of view) or top (Org. unit point of view)....
E.g, if you want to find the position of a given employee, better use the relation P->S (bottom up) than O->S->P (top bottom)since positon is not known...
What is sclas in hrp1001 field for??? Should it be 'O' for all, shall I use all these 6 fields, in the select query , if i chose to solve my problem by select queries???
Well why not just looking at his description ("Type of related object")....
Object O can be linked to another object O (then OTYPE = "O" and sclas = "O") -> this is the case of your zone/region...
But object O can be linked to an object S (position) (so OTYPE = "O" and SCLAS = "S") ....
to summary:
- SCLAS has the same meaning than OTYPE but for the linked object
- SOBID has the same meaning that OBJID but for the linked object
Let's say you want to check if relation exists between zone and region:
SELECT count(*) FROM HRP1001
WHERE OTYPE = 'O'
     AND OBJID = ID(Region)
     AND PLVAR = '01'
     AND SUBTY = 'B0002'   "(= concatenation of RSIGN and RELAT)
     AND ISTAT = '1'   "Active
     AND SCLAS = 'O'
     AND SOBID = ID(region).
cheers, I need to go now

Zfs snapshot of "zoned" ZFS dataset

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