Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
On Tue, Apr 21, 2009 at 2:47 PM, Roof, Morey R. <MRoof at admin.nmt.edu> wrote: > This is a really interesting discussion. I use DRBD to replicate > volumes that are exported via blockio with IET and have never gotten > this message. I currently use DRBD 8.0.16 and over the last year with > 8.0.x series this message has never appeared. Before deployment all > sorts of io tests were conducted and this message wasn't present then > either. Thanks for the input. What are the initiators that you're using? So, I have an idea of a setting for you to change on your iSCSI target > system and I'm really curious if the message goes away. In IET we have > "InitialR2T Yes" but the default is "No". Trying running that way and > see what happens as I'm very curious about the results. > Just tried "InitialR2T Yes", and there was no effect; the concurrent write warnings are still being generated. As a side note for anyone who would like to test this, on windows in particular, here's one of tools I use to duplicate this: SQLIO: http://www.microsoft.com/downloads/details.aspx?familyid=9a8b005b-84e4-4f24-8d65-cb53442d9e19&displaylang=en Contents of param.txt (this assumes f: is the remote storage, and you have one gb free space available): f:\testfile.dat 4 0x0 1024 Command to run: sqlio -kW -s60 -frandom -o8 -b8 -LS -Fparam.txt -Gennadiy -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.linbit.com/pipermail/drbd-user/attachments/20090421/39f15f19/attachment.htm>