Re: [zfs-discuss] Zil on multiple usb keys
> From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss- > boun...@opensolaris.org] On Behalf Of Jim Klimov > > if the OP were so inclined, > he could craft a couple of "striped" pools (300+500) and > then make a ZFS pool over these two. Actually, you can't do that. You can't make a vdev from other vdev's, and when it comes to striping and mirroring your only choice is to do it the right way. If you were REALLY trying to go out of your way to do it wrong somehow, I suppose you could probably make a zvol from a stripe, and then export it to yourself via iscsi, repeat with another zvol, and then mirror the two iscsi targets. ;-) You might even be able to do the same crazy thing with simply zvol's and no iscsi... But either way you'd really be going out of your way to create a problem. ;-) ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Zil on multiple usb keys
2011-07-17 23:13, Edward Ned Harvey пишет: From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss- boun...@opensolaris.org] On Behalf Of Jim Klimov if the OP were so inclined, he could craft a couple of "striped" pools (300+500) and then make a ZFS pool over these two. Actually, you can't do that. You can't make a vdev from other vdev's, and when it comes to striping and mirroring your only choice is to do it the right way. Yup, that's what i said later in the post. If you were REALLY trying to go out of your way to do it wrong somehow, I suppose you could probably make a zvol from a stripe, and then export it to yourself via iscsi, repeat with another zvol, and then mirror the two iscsi targets. ;-) You might even be able to do the same crazy thing with simply zvol's and no iscsi... But either way you'd really be going out of your way to create a problem. ;-) Theoretically, at least, you could do that. AFAIK you can even do it without iSCSI by just addressing zvol device names with their full paths, an yes after crafting yourself an intricate problem you'd likely get one ;) Not that it's impossible or forbidden to shoot oneself in the foot, as your and my adventures demonstrate quite well ;) //Jim ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Zil on multiple usb keys
On Sun, Jul 17, 2011 at 12:13 PM, Edward Ned Harvey wrote: > Actually, you can't do that. You can't make a vdev from other vdev's, and > when it comes to striping and mirroring your only choice is to do it the > right way. > > If you were REALLY trying to go out of your way to do it wrong somehow, I > suppose you could probably make a zvol from a stripe, and then export it to > yourself via iscsi, repeat with another zvol, and then mirror the two iscsi > targets. ;-) You might even be able to do the same crazy thing with simply > zvol's and no iscsi... But either way you'd really be going out of your way > to create a problem. ;-) The right way to do it, um, incorrectly is to create a striped device using SVM, and use that as a vdev for your pool. So yes, you could create two 800GB stripes, and use them to create a ZFS mirror. But it would be a really bad idea. -B -- Brandon High : bh...@freaks.com ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
