Re: [Lustre-discuss] understanding max_rpc_in_flight

2015-03-12 Thread Dilger, Andreas
On 2015/03/11, 8:15 PM, teng wang tzw0...@gmail.commailto:tzw0...@gmail.com wrote: Dear All, Is there any concrete explanation of max_rpc_in_flight? Most definitions online simply interpret it as the name suggests. Can any one explain it from the I/O path? For example, when the client wants to

Re: [Lustre-discuss] The number of threads on OSS

2015-03-12 Thread Dilger, Andreas
On 2015/03/11, 9:03 PM, teng wang tzw0...@gmail.commailto:tzw0...@gmail.com wrote: Dear All, What's the initial number of service threads on OSS? How does it vary according to the workload? Is there any document for this? This can be tuned by the module parameter oss_num_threads for the ost

Re: [Lustre-discuss] Could I restore OST without EA ?

2015-03-12 Thread Dilger, Andreas
On 2015/03/11, 12:57 AM, Tung-Han Hsieh thhs...@twcp1.phys.ntu.edu.tw wrote: Dear Dilger and All, Thanks very much for your helpful information. Now after a long delay, our corrupted data in that OST is rescued by a company. We have prepared a new file server, with rebuit RAID and Lustre file

Re: [Lustre-discuss] Could I restore OST without EA ?

2015-03-12 Thread Tung-Han Hsieh
Dear Dilger, On Thu, Mar 12, 2015 at 05:42:33AM +, Dilger, Andreas wrote: On 2015/03/11, 12:57 AM, Tung-Han Hsieh thhs...@twcp1.phys.ntu.edu.tw wrote: But here we encounter a problem. Since the facilities of the data rescue company is Windows based, they told me that the most they can