[zfs-discuss] Eliminating double path with ZFS's volume manager
Hi, Since they have installed a second path to our Hitachi SAN, my Mac OS X Server 4.8 mounts every SAN disk twice. I asked everywhere, if there's a way, to correct that. And the only answer so far was, that I need a volume manager, that can be configured to consider two volumes as being identical. Now that Mac OS X Leopard supports ZFS, could using ZFS be the solution for this problem? If yes, how could I achieve this? Thanks for your help! Phil 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] Eliminating double path with ZFS's volume manager
Hello Philip, Monday, January 15, 2007, 10:44:49 AM, you wrote: PM Hi, PM Since they have installed a second path to our Hitachi SAN, my PM Mac OS X Server 4.8 mounts every SAN disk twice. PM I asked everywhere, if there's a way, to correct that. And the PM only answer so far was, that I need a volume manager, that can be PM configured to consider two volumes as being identical. PM Now that Mac OS X Leopard supports ZFS, could using ZFS be the PM solution for this problem? If yes, how could I achieve this? 1. I don't know what kind of file system you already have on those disks but if you really mounted them twice you could have already corrupt those file systems 2. I belive it's definitely possible to just correct your config under Mac OS without any need to use other fs or volume manager, however going to zfs could be a good idea anyway 3. if you put those disks under ZFS it should just work despite of having second path -- Best regards, Robertmailto:[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] Eliminating double path with ZFS's volume manager
Robert Milkowski wrote: 2. I belive it's definitely possible to just correct your config under Mac OS without any need to use other fs or volume manager, however going to zfs could be a good idea anyway That implies that MacOS has some sort of native SCSI multipathing like Solaris Mpxio. Does such a beast exist? ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Eliminating double path with ZFS's volume manager
Hi Torrey, I think it does if you buy Xsan. Its still a separate product isn't it? Thought its more like QFS + MPXIO. Best Regards, Jason On 1/15/07, Torrey McMahon [EMAIL PROTECTED] wrote: Robert Milkowski wrote: 2. I belive it's definitely possible to just correct your config under Mac OS without any need to use other fs or volume manager, however going to zfs could be a good idea anyway That implies that MacOS has some sort of native SCSI multipathing like Solaris Mpxio. Does such a beast exist? ___ 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] Eliminating double path with ZFS's volume manager
Got me. However, transport multipathing - Like Mpxio, DLM, VxDMP, etc. - is usually separated from the filesystem layers. Jason J. W. Williams wrote: Hi Torrey, I think it does if you buy Xsan. Its still a separate product isn't it? Thought its more like QFS + MPXIO. Best Regards, Jason On 1/15/07, Torrey McMahon [EMAIL PROTECTED] wrote: Robert Milkowski wrote: 2. I belive it's definitely possible to just correct your config under Mac OS without any need to use other fs or volume manager, however going to zfs could be a good idea anyway That implies that MacOS has some sort of native SCSI multipathing like Solaris Mpxio. Does such a beast exist? ___ 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] Eliminating double path with ZFS's volume manager
Hi Torrey, Looks like its got a half-way decent multipath design: http://docs.info.apple.com/article.html?path=Xsan/1.1/en/c3xs12.html Whether or not it works is another story I suppose. ;-) Best Regards, Jason On 1/15/07, Torrey McMahon [EMAIL PROTECTED] wrote: Got me. However, transport multipathing - Like Mpxio, DLM, VxDMP, etc. - is usually separated from the filesystem layers. Jason J. W. Williams wrote: Hi Torrey, I think it does if you buy Xsan. Its still a separate product isn't it? Thought its more like QFS + MPXIO. Best Regards, Jason On 1/15/07, Torrey McMahon [EMAIL PROTECTED] wrote: Robert Milkowski wrote: 2. I belive it's definitely possible to just correct your config under Mac OS without any need to use other fs or volume manager, however going to zfs could be a good idea anyway That implies that MacOS has some sort of native SCSI multipathing like Solaris Mpxio. Does such a beast exist? ___ 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
