We see a similar issue with vblade when it becomes CPU starved due to resource contention on our AOE server. It would be nice if in these situations the AOE client would queueue write blocks and resend unack'd writes. On Wed, Jan 15, 2014 at 04:52:36PM +0100, Lars Täuber wrote: > Hi, > > I experience some problems with the latest ggaoed version and a fresh ubuntu 14.04 aoe client (from the daily snapshots). > > http://code.google.com/p/ggaoed/source/list > > The kernel version on the client side is 3.13.0-3-generic > > > # modinfo aoe > filename: /lib/modules/3.13.0-3-generic/kernel/drivers/block/aoe/aoe.ko > version: 85 > description: AoE block/char driver for 2.6.2 and newer 2.6 kernels > author: Sam Hopkins <sah@xxxxxxxxxx> > license: GPL > srcversion: 5F0AC5D858A1164C5170585 > > The client is a testing box but the server is in productive state for years. So I can't change the server config. > > > I did a tcpdump and see that the server stops sending a response to the last write request of a series of write requests. > 9 seconds after the client waited for responses without receiving any paket from the target it issues a "Query Config Information Request" and marks the device as read only. This results in a read-only filesystem. > The responses to the "Query Config Information Requests" can be seen right after the requests. > > I can "repair" this with an aoe-revalidate and remounting rw. > But this appears to happen right with the next longer write operation. > > I'm stuck here. > > It seems the client doesn't resend unresponded requests. Is this on purpose? > > Thanks > Lars > > ------------------------------------------------------------------------------ > CenturyLink Cloud: The Leader in Enterprise Cloud Services. > Learn Why More Businesses Are Choosing CenturyLink Cloud For > Critical Workloads, Development Environments & Everything In Between. > Get a Quote or Start a Free Trial Today. > http://pubads.g.doubleclick.net/gampad/clk?id=119420431&iu=/4140/ostg.clktrk > _______________________________________________ > Aoetools-discuss mailing list > Aoetools-discuss@xxxxxxxxxxxxxxxxxxxxx > https://lists.sourceforge.net/lists/listinfo/aoetools-discuss -- James R. Leu | Director of Technology | INOC | Madison, WI, USA O: +1-608-204-0203 | F: +1-608-663-4558 | jleu@xxxxxxxx | www.inoc.com Service. Not Software.®
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