Tag archives for Zfs - Page 2
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 ...
DO NOT TRY IT IN PRODUCTION. USE AT YOUR OWN RISK!
In my last post i did write about some issues related with disksort:
1) Performance (Latency)
2) Consistency
In my D Script i'm printing the buf sector when the sd driver receives it. So, without sorting.
That's important because i'm ...
Hello there, this will be a long post... so, i think if you have no time to waste, think again before you go ahead.
And, no. I'm not Morpheus, so i cannot offer you the truth. Actually, i can just offer you my doubts. And no pills, i do ...
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 ...
Hello there...
I think you agree that the storage's problem is the READ requests, synchronous by nature. And, as i said many times before, i think the solution for all problems (the answer for all questions ;-) is cache. Many levels, many flavors.
I did read many times about the ...
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 ...
These days i was invited to do a presentation about Open Storage and ZFS on two Oracle/Sun events here in Brazil. One in Rio de Janeiro, and another here at São Paulo. Well, it was very interesting, first because i did live in Rio de Janeiro (1998/1999), and is ...
Friday was funny... i had a two node cluster for test on our storage lab, and i was out of the office, delivering a presentation on Oracle Open Storage forum Wednesday/28 - Rio de Janeiro, and thursday/29 - São Paulo (more on that soon). So, a co-worker was trying ...