Yes, after it depend on your average file size Cordialement, Mathieu CHATEAU http://www.lotp.fr
2015-07-12 12:43 GMT+02:00 Geoffrey Letessier <[email protected]>: > Hello Mathieu, > > Thank you for replying. > What do you think about reconstructing every RAID VD with 128KB stripe > size? Indeed, with this value, if one day i decide to use stripped volume, > 128KB is the common value of logical stripe size. > > Thanks again, > Have a nice end-of-weekend > Amicalement, > Geoffrey > ------------------------------------------------------ > Geoffrey Letessier > Responsable informatique & ingénieur système > UPR 9080 - CNRS - Laboratoire de Biochimie Théorique > Institut de Biologie Physico-Chimique > 13, rue Pierre et Marie Curie - 75005 Paris > Tel: 01 58 41 50 93 - eMail: [email protected] > > Le 12 juil. 2015 à 11:49, Mathieu Chateau <[email protected]> a > écrit : > > Hello, > > If these 4 virtual drives are then put together to get one big volume, it > will goes as the slower one. > I would put the LSI to 64K to get same size everywhere anyway, even if > it's transparent/hidden from an OS perspective > > > Cordialement, > Mathieu CHATEAU > http://www.lotp.fr > > 2015-07-12 11:16 GMT+02:00 Geoffrey Letessier <[email protected]> > : > >> Dear all, >> >> Because I’m currently reconstructing all my GlusterFS volumes, I just >> noticed that all of my RAID virtual drives did not necessarily have the >> same stripe size and I wonder whether it would be better to >> reconstruct/rebuild these virtual drives with the same stripe size ... What >> do you recommend ? >> >> Actually, 2 virtual drives of 4 have a stripe size set to 64KB (Dell Perc >> H8xx RAID controller default settings) and the 2 left are set to 256KB (LSI >> MegaRAID 9286-8e default settings). With iozone tests, i notice Dell Perc >> VD have better results than LSI ones. (~1.3-4GBs vs ~1.2GBs) and I wonder >> if these parameters are not in cause... >> >> It’s very urgent for me to know what i have to do because I need to >> reconstruct and set all my volumes and back transfert roughly 40TBs in >> distributed and replicated volumes as quickly as possible… >> >> Thanks by advance, >> Geoffrey >> ------------------------------------------------------ >> Geoffrey Letessier >> Responsable informatique & ingénieur système >> UPR 9080 - CNRS - Laboratoire de Biochimie Théorique >> Institut de Biologie Physico-Chimique >> 13, rue Pierre et Marie Curie - 75005 Paris >> Tel: 01 58 41 50 93 - eMail: [email protected] >> >> _______________________________________________ >> Gluster-users mailing list >> [email protected] >> http://www.gluster.org/mailman/listinfo/gluster-users >> > > >
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