Re: [zfs-discuss] ZFS Crypto Alpha Release
Lally Singh wrote: Looks great.. Any (long-term distant-future) plans of integrating this with the Trusted Extensions for a real quick setup? For you what would integrated with Trusted Extensions mean ? They certainly work together just fine, but I want to better understand what you are actually looking for here. Keeping in mind that often a TX label could have one or more ZFS datasets delegated to it. It would likely have one for its root filesystem and one or more for the per label home dirs and data. With a check to make sure the key's password != the label, just to be sure :-P A generic password quality check would be a good idea to include. -- Darren J Moffat ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] ZFS mirroring
Mertol Ozyoney wrote: Hi; Do any of you know when ZFS remote mirroring will be available ? Depends on exactly what you mean by remote mirroring ? Please explain exactly what you mean by this because there are many different definitions. Some of which ZFS already meets others it depends on your constraints. -- Darren J Moffat ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] ZFS mirroring
I tried to mean continous data replication between different systems. Mertol Ozyoney Storage Practice - Sales Manager Sun Microsystems, TR Istanbul TR Phone +902123352200 Mobile +905339310752 Fax +90212335 Email [EMAIL PROTECTED] -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Darren J Moffat Sent: Monday, October 22, 2007 12:43 PM To: [EMAIL PROTECTED] Cc: zfs-discuss@opensolaris.org Subject: Re: [zfs-discuss] ZFS mirroring Mertol Ozyoney wrote: Hi; Do any of you know when ZFS remote mirroring will be available ? Depends on exactly what you mean by remote mirroring ? Please explain exactly what you mean by this because there are many different definitions. Some of which ZFS already meets others it depends on your constraints. -- Darren J Moffat ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] ZFS mirroring
Mertol Ozyoney wrote: I tried to mean continous data replication between different systems. Still not enough information. How many systems, are all of them expected to be read/write at all times ? Is HA cluster software (such as Sun Cluster) involved ? Does the replication need to be synchronous (ie a transaction on A will fail if B can't commit it) or is asynchronous sufficient ? If asynchronous what is the time window for replication ? Is it a single master with remote copies (that are in standby) ? What network/storage infrastructure is available ? -- Darren J Moffat ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] ZFS mirroring
I know I havent defined my particular needs. However I am looking for a simple explanation of waht is available today and what will be available in short term. Example. One to one asynch replication is suported, many to one synch replication supported etc Regards Mertol Mertol Ozyoney Storage Practice - Sales Manager Sun Microsystems, TR Istanbul TR Phone +902123352200 Mobile +905339310752 Fax +90212335 Email [EMAIL PROTECTED] -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Darren J Moffat Sent: Monday, October 22, 2007 12:48 PM To: [EMAIL PROTECTED] Cc: zfs-discuss@opensolaris.org Subject: Re: [zfs-discuss] ZFS mirroring Mertol Ozyoney wrote: I tried to mean continous data replication between different systems. Still not enough information. How many systems, are all of them expected to be read/write at all times ? Is HA cluster software (such as Sun Cluster) involved ? Does the replication need to be synchronous (ie a transaction on A will fail if B can't commit it) or is asynchronous sufficient ? If asynchronous what is the time window for replication ? Is it a single master with remote copies (that are in standby) ? What network/storage infrastructure is available ? -- Darren J Moffat ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] ZFS mirroring
Mertol, Hi; Do any of you know when ZFS remote mirroring will be available ? Host-based replication of ZFS, and all other Solaris filesystems is available using Sun StorageTek Available Suite. AVS has been part of OpenSolaris since build 68. http://www.opensolaris.org/os/project/avs/ Jim Dunham Storage Platform Software Group Sun Microsystems, Inc. 1617 Southwood Drive Nashua, NH 03063 http://blogs.sun.com/avs regards image001.gif Mertol Ozyoney Storage Practice - Sales Manager Sun Microsystems, TR Istanbul TR Phone +902123352200 Mobile +905339310752 Fax +90212335 Email [EMAIL PROTECTED] image001.gif ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Adding my own compression to zfs
Yes, I think that was the original intent of the project proposal. It could probably be reworded to decrease emphasis on a single algorithm, but I read it as a generic exploration of alternative algorithms. Yes, you read right. The original intent was to investigate alternative algorithms in a general way instead of focused on a single one. All very doable, but it's a lot of work for (IMO) little gain, not to mention increased difficulty maintaining compatibility across disparate versions (what is the set of compression algorithms needed to be 100% compatible?). Do you have any strong reason to believe that there would be little gain or is it just a conjecture? I think I could agree with you, but in my case it's just a conjecture. IMHO I have no idea about how much gain would be possible and I think that this is the main point we need to discover. I'm performing some tests to try to find out if different compression algorithms are REALLY better suited to different entropy scenarios. A lot of papers claim that but no one, as fair as I know, gave arguments to support it. As soon as I have got some results I will post them here. If the claim is true, I'm sure loadable compression modules would be a very good improvement to ZFS. It it's not true, I think that the best to do is just port LZO to ZFS and let aside any other compression algorithm. I haven't heard from any other core contributors, but this sounds like a worthy project to me. Someone from the ZFS team should follow through to create the project on os.org[1] Thank you very much for the support. Domingos. On Sun, Oct 14, 2007 at 03:28:24AM -0700, [EMAIL PROTECTED] wrote: I haven't heard from any other core contributors, but this sounds like a worthy project to me. Someone from the ZFS team should follow through to create the project on os.org[1] Its sounds like like Domingos and Roland might constitute the initial project team. In my opinion, the project should also include an effort in getting LZO into ZFS. As an advanced fast but efficient variant. For that matter, if it were up to me, there should be an effort in modularizing the ZFS compression algorithms into loadable kernel modules, also allowing easy addition of algorithms. I suppose the same should apply to other components where possible, e.g. the spacemap allocator discussed on this list. But I'm a mere C# coder, so I can't really help with that. -mg -- Eric Schrock, Solaris Kernel Development http://blogs.sun.com/eschrock ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
[zfs-discuss] Legacy Mounts - How ?
Hi, back after half a year ... ... and still, after reading documents for the last half day, I am not a bit wiser. Someone had promised to update (and simplify) some examples, but - at least to me - that hasn't happened. :( [Just read the 'Legacy Mount Points', and tell me as beginner, what to do ?!) I need to mount /dev/dsk/c2d0s1 into my existing file system (UFS). Just to retrieve the data, and done. Is that so complicated ? Should not, but all my 10-20 efforts until now have failed miserably. The closest I get is to 'zpool import', and it shows the name of the zfs on that drive ('home'). But mounting fails, saying it might be busy. And it proposes -f, but that also fails, because the mount point '/export/home' is used. Also, I don't want to import a pool, since I have none and don't want one. Please, again, review the documentation and make a beginners' guide that allows us to use ZFS without first getting a PhD in it, and all its terminologies, constructions, syntaxes and data structures ! Uwe ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
[zfs-discuss] ZFS boot for xVM builds?
Hi all. I've been running the ZFS boot netinstall setup on SXCE's snv_69 and snv_70 very happily. I'm anticipating the release of xVM with build 75, and wondering if the same ZFS install procedure is likely to work, or if I'll be left waiting further for more changes. I understand that this probably is asking people to speculate, but since I'm still waiting on IP addresses locally, I figured it could hurt to ask for planning purposes. cheers, adam ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
[zfs-discuss] ZFS SATA Hotswap Autoreplace
I am trying to test a new setup of NV74. I have set up the system with ZFS boot. Everything works fine until I pull a drive. The system locks up when I try to run any command e.g. zpool status. There is no communication with the server from then on. It does not even respond to pings. Setup - Supermicro SC836TQ-R800 Chassis Supermicro X7DB8 Motherboard Supermicro SAT2-MV8 SATA controller Hitatchi Deskstar Harddrives 2 80GB Mirrored and 4 1 TB RaidZ Autoreplace set to ON If i push the reset button the system will come back up ok. I can then run zpool status and find which drive is 'bad'. I would rather the system keep functioning so I can just run the zpool status and then replace the 'bad' drive. Is this setup not supported? Is there something I missed? Thanks, Jeff This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] ZFS mirroring
On Oct 22, 2007, at 2:52 AM, Mertol Ozyoney wrote: I know I havent defined my particular needs. However I am looking for a simple explanation of waht is available today and what will be available in short term. Example. One to one asynch replication is suported, many to one synch replication supported etc You can use 'zfs send/recv' to do asynchronous replication. Existing today is the ability to take recursive snapshot ('zfs snapshot -r'). Coming at the end of this week is the ability to send over multiple file systems with one command ('zfs send -R'): http://www.opensolaris.org/os/community/arc/caselog/2007/574/mail So for example, each night you could do: # zfs snapshot -r tank/[EMAIL PROTECTED] # zfs send -R tank/[EMAIL PROTECTED] | ssh otherhost zfs recv -d backuptank # zfs destroy -r tank/[EMAIL PROTECTED] # zfs rename -r tank/[EMAIL PROTECTED] tank/[EMAIL PROTECTED] eric ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Mounting ZFS Pool to a different server
Hello Mike, Saturday, October 20, 2007, 3:21:16 AM, you wrote: The ideal situation it would go like: host1# zpool export pool host2# zpool import pool If you know (really know) that it is offline on the other server (e.g. you can verify the host is dead), you can use: # zpool import -f pool And probably it would be good to use zpool import -R / -- Best regards, Robert mailto:[EMAIL PROTECTED] http://milek.blogspot.com ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Mounting ZFS Pool to a different server
Hello Mertol, Friday, October 19, 2007, 10:49:13 PM, you wrote: Hi; In summary they want to take the control of a ZFS pool if the primary server fails for some reason. I know we can do it with Sun Cluster how ever this is pretty complex and expensive . Well, Sun Cluster is for free if you don't need a support -- Best regards, Robert Milkowskimailto:[EMAIL PROTECTED] http://milek.blogspot.com ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Legacy Mounts - How ?
If it's just for recovery purposes, try 'zpool import -f -R /mnt pool'. Because there isn't a 1:1 correspondence between filesystems and pools, it isn't possible to just mount a filesystem without importing the pool. And every ZFS filesystem must be part of a pool, so I'm not sure what you mean by I have none and don't want one. - Eric On Mon, Oct 22, 2007 at 11:42:21PM +0800, Uwe Dippel wrote: Hi, back after half a year ... ... and still, after reading documents for the last half day, I am not a bit wiser. Someone had promised to update (and simplify) some examples, but - at least to me - that hasn't happened. :( [Just read the 'Legacy Mount Points', and tell me as beginner, what to do ?!) I need to mount /dev/dsk/c2d0s1 into my existing file system (UFS). Just to retrieve the data, and done. Is that so complicated ? Should not, but all my 10-20 efforts until now have failed miserably. The closest I get is to 'zpool import', and it shows the name of the zfs on that drive ('home'). But mounting fails, saying it might be busy. And it proposes -f, but that also fails, because the mount point '/export/home' is used. Also, I don't want to import a pool, since I have none and don't want one. Please, again, review the documentation and make a beginners' guide that allows us to use ZFS without first getting a PhD in it, and all its terminologies, constructions, syntaxes and data structures ! Uwe ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss -- Eric Schrock, Solaris Kernel Development http://blogs.sun.com/eschrock ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] ZFS SATA Hotswap Autoreplace
I don't think that SATA controller is supported by the SATA framework (you may want to ask storage-discuss), so it's operating in legacy (PATA) mode. Legacy mode doesn't support hotplug. The FMA code should eventually diagnose this drive as faulty, and there is a fix in the works to sidestep this roundtrip discussion with fmd for pathologically broken drives. - Eric On Mon, Oct 22, 2007 at 09:16:53AM -0700, Jeff Creek wrote: I am trying to test a new setup of NV74. I have set up the system with ZFS boot. Everything works fine until I pull a drive. The system locks up when I try to run any command e.g. zpool status. There is no communication with the server from then on. It does not even respond to pings. Setup - Supermicro SC836TQ-R800 Chassis Supermicro X7DB8 Motherboard Supermicro SAT2-MV8 SATA controller Hitatchi Deskstar Harddrives 2 80GB Mirrored and 4 1 TB RaidZ Autoreplace set to ON If i push the reset button the system will come back up ok. I can then run zpool status and find which drive is 'bad'. I would rather the system keep functioning so I can just run the zpool status and then replace the 'bad' drive. Is this setup not supported? Is there something I missed? Thanks, Jeff This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss -- Eric Schrock, Solaris Kernel Development http://blogs.sun.com/eschrock ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] ZIL reliability/replication questions
On 10/18/07, Neil Perrin [EMAIL PROTECTED] wrote: The umem one is unavailable, but the Gigabyte model is easy to find. I had Amazon overnight one to me, it's probably sitting at home right now. Cool let us know how it goes. Not so well. I was completely unable to get the card to work at all. The motherboard's BIOS wouldn't even list the GC-RAMDISK during the bus scan. Solaris saw it, but couldn't talk to it: Oct 20 12:50:54 fs2 ahci: [ID 632458 kern.warning] WARNING: ahci_port_reset: port 1 the device hardware has been initialized and the power-up diagnostics failed The Supermicro 8-port SATA card's BIOS saw it, but Solaris reported errors at boot time: Oct 20 12:06:00 fs2 marvell88sx: [ID 748163 kern.warning] WARNING: marvell88sx0: device on port 5 still busy after reset I tried using it with the motherboard's Marvell-based eSATA ports, but that made the POST hang for a minute or two and Solaris spewed errors all over the console after boot. I'm sending it back. Scott ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
[zfs-discuss] zfs + iscsi + ntfs best practices
I need to format a zfs iscsi target as ntfs (Samba + ADS got the best of me). How do you recommend setting up the software for optimal stability? My main concern is how I will handle growing the partition down the road. Any advice from those experienced in a setup like this is much appreciated. -- Pete ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] ZIL reliability/replication questions
On 10/22/07, Scott Laird [EMAIL PROTECTED] wrote: Oct 20 12:50:54 fs2 ahci: [ID 632458 kern.warning] WARNING: ahci_port_reset: port 1 the device hardware has been initialized and the power-up diagnostics failed IIRC, Gigabyte cheaped out and didn't implement SMART. Thus, everything that tries to keep track of this marks the drives as failed. I'm sending it back. Good plan. Will ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] [storage-discuss] SATA Hotswap
Jeff Creek wrote: I posted this in ZFS-Discuss. Eric Schrock suggested I ask in this forum. I am trying to test a new setup of NV74. I have set up the system with ZFS boot. Everything works fine until I pull a drive. The system locks up when I try to run any command e.g. zpool status. There is no communication with the server from then on. It does not even respond to pings. Setup - Supermicro SC836TQ-R800 Chassis Supermicro X7DB8 Motherboard Supermicro SAT2-MV8 SATA controller Hitatchi Deskstar Harddrives 2 80GB Mirrored and 4 1 TB RaidZ Autoreplace set to ON If i push the reset button the system will come back up ok. I can then run zpool status and find which drive is 'bad'. I would rather the system keep functioning so I can just run the zpool status and then replace the 'bad' drive. Is this setup not supported? Is there something I missed? What SATA controller (if any) is supported for hot swap? I believe that the device you have is a Marvell88SX6081, but without prtconf output it is hard to say. If you were to post the output from prtconf -pv and prtconf -D it might help figure out what is happening here. /var/adm/messages contents might also be useful as well as the output from cfgadm. Regards, Lida Thanks, Jeff This message posted from opensolaris.org ___ storage-discuss mailing list [EMAIL PROTECTED] http://mail.opensolaris.org/mailman/listinfo/storage-discuss ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
[zfs-discuss] Hierarchal zfs mounts
Looking for a way to mount a zfs filesystem ontop of another zfs filesystem without resorting to legacy mode. This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Hierarchal zfs mounts
Mike DeMarco wrote: Looking for a way to mount a zfs filesystem ontop of another zfs filesystem without resorting to legacy mode. doesn't simply 'zfs set mountpoint=...' work for you? -- Michael Schuster Recursion, n.: see 'Recursion' ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] ZFS Crypto Alpha Release
A few things come to mind: * Attaching a label to the zfs filesystem, so I can't mount the FS in an unlabeled or differently-labeled zone if I don't want to. (multiple labels for shared fs's would be cool, too.) * Connecting the startup of the trusted zone (I'm still learning this stuff, sorry if I'm completely off) to the mounting of the filesystem -- I guess these two are similar, in enforcing access to the restricted data to the restricted environment. Perhaps requiring the keys to the fs's as the zone boots. * Straightforward setup to set them both up together. On a portable or an easy-to-steal desktop, the trusted zone's don't help me much without an encrypted store for it. Encrypted ZFS is useful by itself, but trusted zones with a disk that can get stolen needs encryption. Optimally, that mind-boggling 2-line setup procedure for my ZFS setup would be the model for setting up both a zfs encrypted store a trusted zone atop of it. This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Hierarchal zfs mounts
Mike DeMarco wrote: Looking for a way to mount a zfs filesystem ontop of another zfs filesystem without resorting to legacy mode. doesn't simply 'zfs set mountpoint=...' work for you? -- Michael Schuster Recursion, n.: see 'Recursion' ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discu ss well if you create let say a local/apps and a local/apps-bin then zfs set mountpoint=/apps local/apps zfs set mountpoint=/apps/bin local/apps-bin now if you reboot the system there is no mechanism to tell zfs to mount /apps first and /apps/bin second so you could get /apps/bin mounted first and then /apps either will mount overtop or wont mount. This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Hierarchal zfs mounts
On Mon, Oct 22, 2007 at 11:41:57AM -0700, Michael Schuster wrote: Mike DeMarco wrote: Looking for a way to mount a zfs filesystem ontop of another zfs filesystem without resorting to legacy mode. doesn't simply 'zfs set mountpoint=...' work for you? Does this have boot-time problems? I don't see how to force an ordering of pool imports. -- Darren Dunham [EMAIL PROTECTED] Senior Technical Consultant TAOShttp://www.taos.com/ Got some Dr Pepper? San Francisco, CA bay area This line left intentionally blank to confuse you. ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Hierarchal zfs mounts
On Mon, Oct 22, 2007 at 12:16:21PM -0700, Mike DeMarco wrote: Mike DeMarco wrote: Looking for a way to mount a zfs filesystem ontop of another zfs filesystem without resorting to legacy mode. doesn't simply 'zfs set mountpoint=...' work for you? -- Michael Schuster Recursion, n.: see 'Recursion' ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discu ss well if you create let say a local/apps and a local/apps-bin then zfs set mountpoint=/apps local/apps zfs set mountpoint=/apps/bin local/apps-bin now if you reboot the system there is no mechanism to tell zfs to mount /apps first and /apps/bin second so you could get /apps/bin mounted first and then /apps either will mount overtop or wont mount. The datasets should be mounted in lexical mountpoint order so that shorter mountpoints are mounted first (see dataset_cmp() in zfs_main.c). Are you seeing different behavior? - Eric -- Eric Schrock, Solaris Kernel Development http://blogs.sun.com/eschrock ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Hierarchal zfs mounts
No boot problems. The zfs filesystems are in the same pool. What would be nice is something like zfs set mountorder=1 local/apps zfs set mountorder=2 local/apps-bin or something along that line. So one zfs filesystem can be reliably mounted to a point inside another zfs filesystem. This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Hierarchal zfs mounts
M D wrote: No boot problems. The zfs filesystems are in the same pool. What would be nice is something like zfs set mountorder=1 local/apps zfs set mountorder=2 local/apps-bin or something along that line. So one zfs filesystem can be reliably mounted to a point inside another zfs filesystem. I may be a missing the obvious here: what are you trying to solve that Eric's explanation didn't cover? Michael -- Michael Schuster Recursion, n.: see 'Recursion' ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss