Re: implications of mixed mode

2015-11-27 Thread Duncan
Lukas Pirl posted on Fri, 27 Nov 2015 23:30:05 +1300 as excerpted: > On 11/27/2015 04:11 PM, Duncan wrote as excerpted: >> My big hesitancy would be over that fact that very few will run or test >> mixed-mode at TB scale filesystem level [s]o you're relatively more >> likely to run into rarely see

Re: implications of mixed mode

2015-11-27 Thread Lukas Pirl
On 11/27/2015 04:11 PM, Duncan wrote as excerpted: > My big hesitancy would be over that fact that very few will run or test > mixed-mode at TB scale filesystem level, and where they do, it's likely > to be in ordered to work around the current (but set to soon be > eliminated) metadata-only (no

Re: implications of mixed mode

2015-11-26 Thread Roman Mamedov
On Fri, 27 Nov 2015 10:21:31 +0800 Qu Wenruo wrote: > And some extra pros and cons due to fixed(4K) small(compared to 16K > default) nodesize: > > + A little higher performance >node/leaf size is restricted to sectorsize, smaller node/leaf, >smaller range to lock. >In our SSD test,

Re: implications of mixed mode

2015-11-26 Thread Duncan
Lukas Pirl posted on Fri, 27 Nov 2015 12:54:57 +1300 as excerpted: > Dear list, > > if a larger RAID file system (say disk space of 8 TB in total) is > created in mixed mode, what are the implications? > > From reading the mailing list and the Wiki, I can think of the > following: > > + less ha

Re: implications of mixed mode

2015-11-26 Thread Qu Wenruo
Lukas Pirl wrote on 2015/11/27 12:54 +1300: Dear list, if a larger RAID file system (say disk space of 8 TB in total) is created in mixed mode, what are the implications? From reading the mailing list and the Wiki, I can think of the following: + less hassle with "false positive" ENOSPC I

implications of mixed mode

2015-11-26 Thread Lukas Pirl
Dear list, if a larger RAID file system (say disk space of 8 TB in total) is created in mixed mode, what are the implications? >From reading the mailing list and the Wiki, I can think of the following: + less hassle with "false positive" ENOSPC - data and metadata have to have the same replicati