Re: [zfs-discuss] zfs mirroring question

2009-07-22 Thread Darren J Moffat
Daniel S wrote: I am running basic mirroring in a server setup. When I pull out a hard drive and put it back in, it won't detect it and resilver it until I reboot the system. Is there a way to force it to detect it and resilver it in real time? More info on your hardware is required. In part

Re: [zfs-discuss] ZFS Mirroring - Scenario

2008-07-11 Thread Robb Sanvely
Thank you for all the feedback! It's appreciated! @hartz "Does the racks have power from separate PDUs?" Yes "Are they in physically remote locations?" No, the racks are side by side "Does your fabric switches have redundant power from separate PDUs?" yes "Do you want mirroring here purely

Re: [zfs-discuss] ZFS Mirroring - Scenario

2008-07-11 Thread Bob Friesenhahn
On Fri, 11 Jul 2008, Ross wrote: > > If you want to guard against any two trays failing, you need to use > some kind of dual parity protection. Either dual mirrors, or > raid-z2. Given that you only have 8 LUN's, raid-z2 would seem to be > the best option. System reliability will be dominated

Re: [zfs-discuss] ZFS Mirroring - Scenario

2008-07-11 Thread Johan Hartzenberg
Sorry, but I'm stuck at 6540. There are so many options in how you would practically configure these that there is no way to give a sensible answer to your question. But the most basic questions are: Does the racks have power from separate PDUs? Are they in physically remote locations? Does you

Re: [zfs-discuss] ZFS Mirroring - Scenario

2008-07-11 Thread Ross
Essentially yes, the entire pool dies. If you think of each mirror as an individual disk, you've just striped them together so the pool goes offline if any mirror fails, and each mirror can only guard against one half of the mirror failing. If you want to guard against any two trays failing, y

Re: [zfs-discuss] ZFS Mirroring - Scenario

2008-07-10 Thread Bob Friesenhahn
On Thu, 10 Jul 2008, Robb Snavely wrote: > > Now in the VERY unlikely event that we lost the first tray in each rack > which contain 0 and 4 respectively... > > somepool > mirror--- > 0 | > 4 | Bye Bye > --- >

Re: [zfs-discuss] zfs mirroring question

2007-12-05 Thread Anton B. Rang
The file systems are striped between the two mirrors. (If your disks are A, B, C, D then a single file's blocks would reside on disks A+B, then C+D, then A+B again.) If you lose A and B, or C and D, you lose the whole pool. (Hence if you have two power supplies, for instance, you'd probably w

Re: [zfs-discuss] zfs mirroring question

2007-12-05 Thread Dick Davies
On Dec 5, 2007 9:54 PM, Brian Lionberger <[EMAIL PROTECTED]> wrote: > I create two zfs's on one pool of four disks with two mirrors, such as... > / > zpool create tank mirror disk1 disk2 mirror disk3 disk4 > > zfs create tank/fs1 > zfs create tank/fs2/ > > Are fs1 and fs2 striped across all four di

Re: [zfs-discuss] ZFS mirroring

2007-10-22 Thread eric kustarz
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 sync

Re: [zfs-discuss] ZFS mirroring

2007-10-22 Thread Jim Dunham
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/

Re: [zfs-discuss] ZFS mirroring

2007-10-22 Thread Mertol Ozyoney
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 ti

Re: [zfs-discuss] ZFS mirroring

2007-10-22 Thread Darren J Moffat
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 synchr

Re: [zfs-discuss] ZFS mirroring

2007-10-22 Thread Mertol Ozyoney
] [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 avail

Re: [zfs-discuss] ZFS mirroring

2007-10-22 Thread Darren J Moffat
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 d

Re: [zfs-discuss] ZFS mirroring vs. ditto blocks

2007-05-23 Thread Richard Elling
Moore, Joe wrote: Has anyone done a comparison of the reliability and performance of a mirrored zpool vs. a non-redundant zpool using ditto blocks? What about a gut-instinct about which will give better performance? Or do I have to wait until my Thumper arrives to find out for myself? It all

Re: [zfs-discuss] ZFS mirroring vs. ditto blocks

2007-05-23 Thread James Blackburn
On 5/23/07, Moore, Joe <[EMAIL PROTECTED]> wrote: Has anyone done a comparison of the reliability and performance of a mirrored zpool vs. a non-redundant zpool using ditto blocks? What about a gut-instinct about which will give better performance? Or do I have to wait until my Thumper arrives t