From: Ming Z. <mi...@el...> - 2005-07-29 14:46:25
|
On Fri, 2005-07-29 at 07:57 -0500, Brian Wolfe wrote: > B.5.4. RAID-4/5 > Resizing a RAID-4/5 region follows the same rules and restrictions for > resizing a RAID-0 region. Expand a RAID-4/5 region by adding one new > object to the region. Shrink a RAID-4/5 region by removing up to N-1 of > the current child objects in a region with N objects. > > See Section B.5.2, "RAID-0" for information about how to perform this > function. > > Like RAID-0, RAID-4/5 regions must be deactivated before they are > resized. thx for the information. but this is not so useful since it has to be stopped. stop mean downtime. :P ming > > > > This is from http://evms.sourceforge.net/user_guide/#raid45 > > I usually just reccomend installing a second raid5 then expanding the > volume to use raid-0 over the two raid-5 sets via LVM2 linear. > > It all really depends on your needs. Maybe if you were to give me your > planned usage scenario for the database I could be of more help. :) Feel > free to message me privately if you want to keep the details private. > > On Thu, 2005-07-28 at 19:13 -0400, Ming Zhang wrote: > > On Tue, 2005-07-26 at 09:59 -0500, Brian Wolfe wrote: > > > I *think* the latest EVMS supports dymanic raid-5 capacity changing on > > > 2.6.? (dunno which version it started at). > > > > > more detail? > > > > u mean raid5 in MD? can that be resize dynamically? i do not know. > > > > > > > > > > > On Tue, 2005-07-26 at 10:36 -0400, Ming Zhang wrote: > > > > I have a friend asked me for this. I wonder if anybody can give me a > > > > recommendation? Many of you are admin who are much better than me on > > > > this. :) > > > > > > > > Thanks! > > > > > > > > > > > > > I have a question for you. I want to use iscsi array > > > > > to store database data file. I hope I can get some > > > > > kind of redundency (RAID) as well as dynamic increase > > > > > disk space without shuting down the database to > > > > > rebuild the array. The database will have transactions > > > > > all the time and can't be shutdown. > > > > > > > > > > > > Ming > > > > > > > > > > > > > > > > > > > > ------------------------------------------------------- > > > > SF.Net email is sponsored by: Discover Easy Linux Migration Strategies > > > > from IBM. Find simple to follow Roadmaps, straightforward articles, > > > > informative Webcasts and more! Get everything you need to get up to > > > > speed, fast. http://ads.osdn.com/?ad_id=7477&alloc_id=16492&op=click > > > > _______________________________________________ > > > > Iscsitarget-devel mailing list > > > > Isc...@li... > > > > https://lists.sourceforge.net/lists/listinfo/iscsitarget-devel > > > > > > > > ------------------------------------------------------- > > SF.Net email is Sponsored by the Better Software Conference & EXPO September > > 19-22, 2005 * San Francisco, CA * Development Lifecycle Practices > > Agile & Plan-Driven Development * Managing Projects & Teams * Testing & QA > > Security * Process Improvement & Measurement * http://www.sqe.com/bsce5sf > > _______________________________________________ > > Iscsitarget-devel mailing list > > Isc...@li... > > https://lists.sourceforge.net/lists/listinfo/iscsitarget-devel |