Tag archives for Opensolaris

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image-2891

Parceria…

Marcelo Leal, arquiteto da Locaweb, empresa especializada em web hosting e serviços de cloud computing, comenta a atuação da Itautec, que forneceu uma solução customizada de servidores para a companhia. Esta solução permitiu à empresa dobrar a densidade de armazenamento em seu datacenter, com custos competitivos. É mais uma demonstração ...
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ZFS Internals (part #11)

PLEASE BE AWARE THAT ANY INFORMATION YOU MAY FIND HERE MAY BE INACCURATE, AND COULD INCLUDE TECHNICAL INACCURACIES, TYPOGRAPHICAL ERRORS, AND EVEN SPELLING ERRORS. From the MANUAL page: The zdb command is used by support engineers to diagnose failures and gather statistics. Since the ZFS file ...
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NFS, TCP, retrans and timeo

I think there is a misunderstanding regarding the protocols and NFS options while using it over TCP. As the NFS is an old protocol, and used to UDP, when the implementations did change the default transport to TCP, the features from one were mixed to the other in some interpretations. Well, ...
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image-2264

I would like to understand…

Maybe if i could understand the Oracle's mind, i could learn how to make money. I think that is the key in this whole Oracle/Sun situation: Java, Dtrace 1, 2, 3, 4, and ZFS creators did leave the company. Why someone would buy a technology company, with so many ...
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image-2197

Disksort vs Max_Pending

DO NOT TRY IT IN PRODUCTION. USE AT YOUR OWN RISK! Good news... here you can get a little script to enable, disable, and check the disksort flag on your disks (not persistent after reboot, take a look on my other post to a link for how to do it). Take ...
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image-1997

Performance II

In my last post about 'Performance', i did talk about a ZFS tuning parameter: zfs_prefetch_disable. And that was a ZFS read parameter... In this post, we will take a look in another one, with the same 'water to wine' effect. This time with focus on writes... We have a set ...
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ZFS Internals (part #10)

PLEASE BE AWARE THAT ANY INFORMATION YOU MAY FIND HERE MAY BE INACCURATE, AND COULD INCLUDE TECHNICAL INACCURACIES, TYPOGRAPHICAL ERRORS, AND EVEN SPELLING ERRORS. From the MANUAL page: The zdb command is used by support engineers to diagnose failures and gather statistics. Since the ZFS file ...
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