Re: [zfs-discuss] Where is the ZFS configuration data stored?
On 14/10/06, Darren Dunham [EMAIL PROTECTED] wrote: So the warnings I've heard no longer apply? If so, that's great. Thanks for all replies. Umm, which warnings? The don't import a pool on two hosts at once definitely still applies. Sure :) I meant the reason I'd heard ( at http://solaristhings.blogspot.com/2006/06/zfs-root-on-solaris-part-3.html ) for adding zpool.cache to your failsafe miniroot, since a 'zpool import -f' on a 'root pool' meant the box wouldn't reboot cleanly. -- Rasputin :: Jack of All Trades - Master of Nuns http://number9.hellooperator.net/ ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Where is the ZFS configuration data stored?
On 12/10/06, Michael Schuster [EMAIL PROTECTED] wrote: Ceri Davies wrote: On Thu, Oct 12, 2006 at 02:06:15PM +0100, Dick Davies wrote: I'd expect: zpool import -f (see the manpage) to probe /dev/dsk/ and rebuild the zpool.cache file, but my understanding is that this a) doesn't work yet or b) does horrible things to your chances of surviving a reboot [0]. So how do I import a pool created on a different host for the first time? zpool import [ -f ] (provided it's not in use *at the same time* by another host) So the warnings I've heard no longer apply? If so, that's great. Thanks for all replies. -- Rasputin :: Jack of All Trades - Master of Nuns http://number9.hellooperator.net/ ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Where is the ZFS configuration data stored?
So how do I import a pool created on a different host for the first time? zpool import [ -f ] (provided it's not in use *at the same time* by another host) So the warnings I've heard no longer apply? If so, that's great. Thanks for all replies. Umm, which warnings? The don't import a pool on two hosts at once definitely still applies. -- 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] Where is the ZFS configuration data stored?
Does it matter if the /dev names of the partitions change (i.e. from / dev/dsk/c2t2250CC611005d3s0 to another machine not using sun hba drivers with a different/shorter name??) thanks keith If the file does not exist than ZFS will not attempt to open any pools at boot. You must issue an explicit 'zpool import' command to probe the available devices for metadata to re-discover your pools. ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Where is the ZFS configuration data stored?
Does it matter if the /dev names of the partitions change (i.e. from / dev/dsk/c2t2250CC611005d3s0 to another machine not using sun hba drivers with a different/shorter name??) It should not. As long as all the disks are visible and ZFS can read the labels, it should be able to import the pool. -- 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] Where is the ZFS configuration data stored?
On 12/10/06, Matthew Ahrens [EMAIL PROTECTED] wrote: FYI, /etc/zfs/zpool.cache just tells us what pools to open when you boot up. Everything else (mountpoints, filesystems, etc) is stored in the pool itself. Does anyone know of any plans or strategies to remove this dependancy? -- Rasputin :: Jack of All Trades - Master of Nuns http://number9.hellooperator.net/ ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Where is the ZFS configuration data stored?
Dick Davies wrote: On 12/10/06, Matthew Ahrens [EMAIL PROTECTED] wrote: FYI, /etc/zfs/zpool.cache just tells us what pools to open when you boot up. Everything else (mountpoints, filesystems, etc) is stored in the pool itself. Does anyone know of any plans or strategies to remove this dependancy? What do you suggest in its place? James C. McPherson -- Solaris kernel software engineer, system admin and troubleshooter http://www.jmcp.homeunix.com/blog Find me on LinkedIn @ http://www.linkedin.com/in/jamescmcpherson ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Where is the ZFS configuration data stored?
James C. McPherson wrote: Dick Davies wrote: On 12/10/06, Matthew Ahrens [EMAIL PROTECTED] wrote: FYI, /etc/zfs/zpool.cache just tells us what pools to open when you boot up. Everything else (mountpoints, filesystems, etc) is stored in the pool itself. Does anyone know of any plans or strategies to remove this dependancy? What do you suggest in its place? Or better yet, exactly what is the problem with having the cache ? -- Darren J Moffat ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Where is the ZFS configuration data stored?
On 12/10/06, Michael Schuster [EMAIL PROTECTED] wrote: James C. McPherson wrote: Dick Davies wrote: On 12/10/06, Matthew Ahrens [EMAIL PROTECTED] wrote: FYI, /etc/zfs/zpool.cache just tells us what pools to open when you boot up. Everything else (mountpoints, filesystems, etc) is stored in the pool itself. Does anyone know of any plans or strategies to remove this dependancy? What do you suggest in its place? and why? what's your objection to the current scheme? Just the hassle of having to create a cache file in boot archives etc. -- Rasputin :: Jack of All Trades - Master of Nuns http://number9.hellooperator.net/ ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Where is the ZFS configuration data stored?
On Wed, Oct 11, 2006 at 11:49:48PM -0700, Matthew Ahrens wrote: James McPherson wrote: On 10/12/06, Steve Goldberg [EMAIL PROTECTED] wrote: Where is the ZFS configuration (zpools, mountpoints, filesystems, etc) data stored within Solaris? Is there something akin to vfstab or perhaps a database? Have a look at the contents of /etc/zfs for an in-filesystem artefact of zfs. Apart from that, the information required is stored on the disk itself. There is really good documentation on ZFS at the ZFS community pages found via http://www.opensolaris.org/os/community/zfs. FYI, /etc/zfs/zpool.cache just tells us what pools to open when you boot up. Everything else (mountpoints, filesystems, etc) is stored in the pool itself. What happens if the file does not exist? Are the devices searched for metadata? Ceri -- That must be wonderful! I don't understand it at all. -- Moliere pgpKKSlC0EwiG.pgp Description: PGP signature ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Where is the ZFS configuration data stored?
On 12/10/06, Ceri Davies [EMAIL PROTECTED] wrote: On Wed, Oct 11, 2006 at 11:49:48PM -0700, Matthew Ahrens wrote: FYI, /etc/zfs/zpool.cache just tells us what pools to open when you boot up. Everything else (mountpoints, filesystems, etc) is stored in the pool itself. What happens if the file does not exist? Are the devices searched for metadata? My understanding (I'll be delighted if I'm wrong) is that you would be stuffed. I'd expect: zpool import -f (see the manpage) to probe /dev/dsk/ and rebuild the zpool.cache file, but my understanding is that this a) doesn't work yet or b) does horrible things to your chances of surviving a reboot [0]. This means that for zfs root and failsafe boots, you need to have a zpool.cache in your boot/miniroot archive (I probably have the terminology wrong) otherwise the boot will fail. I was asking if it was going to be replaced because it would really simplify ZFS root. Dick. [0] going from: http://solaristhings.blogspot.com/2006/06/zfs-root-on-solaris-part-3.html -- Rasputin :: Jack of All Trades - Master of Nuns http://number9.hellooperator.net/ ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Where is the ZFS configuration data stored?
Dick Davies wrote: On 12/10/06, Michael Schuster [EMAIL PROTECTED] wrote: James C. McPherson wrote: Dick Davies wrote: On 12/10/06, Matthew Ahrens [EMAIL PROTECTED] wrote: FYI, /etc/zfs/zpool.cache just tells us what pools to open when you boot up. Everything else (mountpoints, filesystems, etc) is stored in the pool itself. Does anyone know of any plans or strategies to remove this dependancy? What do you suggest in its place? and why? what's your objection to the current scheme? Just the hassle of having to create a cache file in boot archives etc. Why is that a hassle ? bootadm update-archive does that for you. -- Darren J Moffat ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Where is the ZFS configuration data stored?
On Thu, Oct 12, 2006 at 02:06:15PM +0100, Dick Davies wrote: On 12/10/06, Ceri Davies [EMAIL PROTECTED] wrote: On Wed, Oct 11, 2006 at 11:49:48PM -0700, Matthew Ahrens wrote: FYI, /etc/zfs/zpool.cache just tells us what pools to open when you boot up. Everything else (mountpoints, filesystems, etc) is stored in the pool itself. What happens if the file does not exist? Are the devices searched for metadata? My understanding (I'll be delighted if I'm wrong) is that you would be stuffed. I'd expect: zpool import -f (see the manpage) to probe /dev/dsk/ and rebuild the zpool.cache file, but my understanding is that this a) doesn't work yet or b) does horrible things to your chances of surviving a reboot [0]. So how do I import a pool created on a different host for the first time? Ceri -- That must be wonderful! I don't understand it at all. -- Moliere pgpnORJ2EpiPx.pgp Description: PGP signature ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Where is the ZFS configuration data stored?
On Thu, Oct 12, 2006 at 07:53:37AM -0600, Mark Maybee wrote: Ceri Davies wrote: On Wed, Oct 11, 2006 at 11:49:48PM -0700, Matthew Ahrens wrote: James McPherson wrote: On 10/12/06, Steve Goldberg [EMAIL PROTECTED] wrote: Where is the ZFS configuration (zpools, mountpoints, filesystems, etc) data stored within Solaris? Is there something akin to vfstab or perhaps a database? Have a look at the contents of /etc/zfs for an in-filesystem artefact of zfs. Apart from that, the information required is stored on the disk itself. There is really good documentation on ZFS at the ZFS community pages found via http://www.opensolaris.org/os/community/zfs. FYI, /etc/zfs/zpool.cache just tells us what pools to open when you boot up. Everything else (mountpoints, filesystems, etc) is stored in the pool itself. What happens if the file does not exist? Are the devices searched for metadata? Ceri If the file does not exist than ZFS will not attempt to open any pools at boot. You must issue an explicit 'zpool import' command to probe the available devices for metadata to re-discover your pools. OK, that's fine then. Ceri -- That must be wonderful! I don't understand it at all. -- Moliere pgpNFNE0tDgSA.pgp Description: PGP signature ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Where is the ZFS configuration data stored?
On Thu, Oct 12, 2006 at 02:54:05PM +0100, Ceri Davies wrote: On Thu, Oct 12, 2006 at 02:06:15PM +0100, Dick Davies wrote: On 12/10/06, Ceri Davies [EMAIL PROTECTED] wrote: On Wed, Oct 11, 2006 at 11:49:48PM -0700, Matthew Ahrens wrote: FYI, /etc/zfs/zpool.cache just tells us what pools to open when you boot up. Everything else (mountpoints, filesystems, etc) is stored in the pool itself. What happens if the file does not exist? Are the devices searched for metadata? My understanding (I'll be delighted if I'm wrong) is that you would be stuffed. I'd expect: zpool import -f (see the manpage) to probe /dev/dsk/ and rebuild the zpool.cache file, but my understanding is that this a) doesn't work yet or b) does horrible things to your chances of surviving a reboot [0]. So how do I import a pool created on a different host for the first time? Never mind, Mark just answered that. Ceri -- That must be wonderful! I don't understand it at all. -- Moliere pgpGc5be2cfdQ.pgp Description: PGP signature ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Where is the ZFS configuration data stored?
Ceri Davies wrote: On Thu, Oct 12, 2006 at 02:06:15PM +0100, Dick Davies wrote: On 12/10/06, Ceri Davies [EMAIL PROTECTED] wrote: On Wed, Oct 11, 2006 at 11:49:48PM -0700, Matthew Ahrens wrote: FYI, /etc/zfs/zpool.cache just tells us what pools to open when you boot up. Everything else (mountpoints, filesystems, etc) is stored in the pool itself. What happens if the file does not exist? Are the devices searched for metadata? My understanding (I'll be delighted if I'm wrong) is that you would be stuffed. I'd expect: zpool import -f (see the manpage) to probe /dev/dsk/ and rebuild the zpool.cache file, but my understanding is that this a) doesn't work yet or b) does horrible things to your chances of surviving a reboot [0]. So how do I import a pool created on a different host for the first time? zpool import [ -f ] (provided it's not in use *at the same time* by another host) -- Michael Schuster +49 89 46008-2974 / x62974 visit the online support center: http://www.sun.com/osc/ Recursion, n.: see 'Recursion' ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Where is the ZFS configuration data stored?
I was asking if it was going to be replaced because it would really simplify ZFS root. Dick. [0] going from: http://solaristhings.blogspot.com/2006/06/zfs-root-on-solaris-part-3.html I don't know about replaced, but presumably with the addition of hostid to the pool data, it could be enhanced. For instance, VxVM has a similar file 'volboot'. It's needed to import any diskgroup that isn't normal (using entire disks). So boot-time imports consist of both scanning devices, looking for VxVM signatures, then importing any with the correct hostid and flags, then attempting to import other things explicicly mentioned in the volboot file. Since you can put a ZFS pool in files, you're going to have to have a cache or something like it since you're never going to scan them for importable pools. Sone one possible enhancement in ZFS could be that even if the cache didn't have a given (full disk) pool, it could be scanned and imported anyway. I don't know if such a feature would be useful for the implementation of ZFS root or not. Either way it would have to wait for the hostid stuff to go in. -- 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] Where is the ZFS configuration data stored?
James C. McPherson wrote: Dick Davies wrote: On 12/10/06, Matthew Ahrens [EMAIL PROTECTED] wrote: FYI, /etc/zfs/zpool.cache just tells us what pools to open when you boot up. Everything else (mountpoints, filesystems, etc) is stored in the pool itself. Does anyone know of any plans or strategies to remove this dependancy? What do you suggest in its place? Directory service hooks perhaps? ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Where is the ZFS configuration data stored?
Thanks Matt. So is the config/meta info for the pool that is stored within the pool kept in a file? Is the file user readable or binary? Steve Matthew Ahrens wrote: James McPherson wrote: On 10/12/06, Steve Goldberg [EMAIL PROTECTED] wrote: Where is the ZFS configuration (zpools, mountpoints, filesystems, etc) data stored within Solaris? Is there something akin to vfstab or perhaps a database? Have a look at the contents of /etc/zfs for an in-filesystem artefact of zfs. Apart from that, the information required is stored on the disk itself. There is really good documentation on ZFS at the ZFS community pages found via http://www.opensolaris.org/os/community/zfs. FYI, /etc/zfs/zpool.cache just tells us what pools to open when you boot up. Everything else (mountpoints, filesystems, etc) is stored in the pool itself. --matt -- Steven Goldberg Engagement Architect Sun Microsystems, Inc. 15395 SE 30th PL, Suite 120 Bellevue, WA 98011 USA Phone +1 425 467 4349 Email [EMAIL PROTECTED] ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Where is the ZFS configuration data stored?
Steven Goldberg wrote: Thanks Matt. So is the config/meta info for the pool that is stored within the pool kept in a file? Is the file user readable or binary? It is not user-readable. See the on-disk format document, linked here: http://www.opensolaris.org/os/community/zfs/docs/ --matt ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
[zfs-discuss] Where is the ZFS configuration data stored?
Hi All, Where is the ZFS configuration (zpools, mountpoints, filesystems, etc) data stored within Solaris? Is there something akin to vfstab or perhaps a database? Thanks, Steve 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] Where is the ZFS configuration data stored?
On 10/12/06, Steve Goldberg [EMAIL PROTECTED] wrote: Where is the ZFS configuration (zpools, mountpoints, filesystems, etc) data stored within Solaris? Is there something akin to vfstab or perhaps a database? Have a look at the contents of /etc/zfs for an in-filesystem artefact of zfs. Apart from that, the information required is stored on the disk itself. There is really good documentation on ZFS at the ZFS community pages found via http://www.opensolaris.org/os/community/zfs. cheers, James C. McPherson -- Solaris kernel software engineer, system admin and troubleshooter http://www.jmcp.homeunix.com/blog Find me on LinkedIn @ http://www.linkedin.com/in/jamescmcpherson ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
