James, Thanks a lot for your answer and for your presentation. I will read it before making the activation of mpxio.
Thanks ! Kind regards. Pierre. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: maandag 18 augustus 2008 22:49 To: Dony Pierre Cc: zfs-discuss@opensolaris.org Subject: Re: [zfs-discuss] Zfs and mpxio - device name changed Dony Pierre wrote: > > Hi all, > > I have defined a zfs pool on a Solaris 10 : > > [EMAIL PROTECTED]:/kernel/drv> zpool list > NAME SIZE USED AVAIL CAP HEALTH ALTROOT > nsrcatalog 125G 72.7G 52.4G 58% ONLINE - > > [EMAIL PROTECTED]:/kernel/drv> zpool status nsrcatalog > pool: nsrcatalog > state: ONLINE > scrub: none requested > config: > > NAME STATE READ WRITE CKSUM > nsrcatalog ONLINE 0 0 0 > mirror ONLINE 0 0 0 > c7t500507630708433Bd0 ONLINE 0 0 0 > c6t5005076307034352d0 ONLINE 0 0 0 > mirror ONLINE 0 0 0 > c7t500507630708433Bd1 ONLINE 0 0 0 > c6t5005076307034352d1 ONLINE 0 0 0 > mirror ONLINE 0 0 0 > c7t500507630708433Bd2 ONLINE 0 0 0 > c6t5005076307034352d2 ONLINE 0 0 0 > mirror ONLINE 0 0 0 > c7t500507630708433Bd3 ONLINE 0 0 0 > c6t5005076307034352d3 ONLINE 0 0 0 > mirror ONLINE 0 0 0 > c7t500507630708433Bd4 ONLINE 0 0 0 > c6t5005076307034352d4 ONLINE 0 0 0 > mirror ONLINE 0 0 0 > c7t500507630708433Bd5 ONLINE 0 0 0 > c6t5005076307034352d5 ONLINE 0 0 0 > mirror ONLINE 0 0 0 > c7t500507630708433Bd6 ONLINE 0 0 0 > c6t5005076307034352d6 ONLINE 0 0 0 > > errors: No known data errors > > I would now like to use mpxio - multipathing driver. So, i will change > the file /kernel/drv/fp.conf and set the parameter mpxio-disable="no"; > > But, I thing Solaris will change after a reboot the device name !!. What > will be the status of my zpool after the reboot. Do I have to redefine it ? > > How can I preserve data on it ? Yes, the cXtYdZ paths will change. You don't even need to export and import the pool, ZFS looks at the devid (device id) of each disk in your pool in preference to a device path - if the devid doesn't change (and it shouldn't!), then there's no issue at all. I strongly advise you to use the stmsboot(1m) command to handle the enabling of MPxIO. Otherwise your system might not boot - there are a few niggly little things that stmsboot(1m) does for you which you might not do by yourself. If you'd like more information on devids, please have a look at my presentation on the concept: http://www.jmcp.homeunix.com/~jmcp/WhatIsAGuid.pdf James C. McPherson -- Senior Kernel Software Engineer, Solaris Sun Microsystems http://blogs.sun.com/jmcp http://www.jmcp.homeunix.com/blog ----------------------------------------- Visit our website! http://www.nbb.be "DISCLAIMER: The content of this e-mail message should not be construed as binding on the part of the National Bank of Belgium (NBB) unless otherwise and previously stated. The opinions expressed in this message are solely those of the author and do not necessarily reflect NBB viewpoints, particularly when the content of this message, or part thereof, is private by nature or does not fall within the professional scope of its author." _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
