Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Florian Haas schrieb: >> Florian Haas schrieb: >> >>> OK. Can you post a relevant excerpt of your syslog? Please do "grep >>> drbd0 >>> /var/log/syslog", and then cut & paste to include 100 or so relevant >>> lines >>> from your most recent verify run. >>> >>> >> Sure: >> Jun 15 10:47:48 host-a kernel: drbd0: conn( Connected -> VerifyS ) >> Jun 15 10:48:43 host-a kernel: drbd0: Out of sync: start=4475928, >> size=32 (secto >> rs) >> Jun 15 10:48:43 host-a kernel: drbd0: Out of sync: start=4475960, size=8 >> (sector >> s) >> > > Right. And now can you do > > dd if=<dev> skip=<start> bs=512 count=<size> iflag=direct | openssl md5 > > ... where <dev> is your backing device, <start> is the first out-of-sync > sector as reported in the kernel log, and <size> is the number of > out-of-sync sectors? > I did it allready. > Please do that on both nodes, for a handful (say 5 or so) of out-of-sync > areas reported in your syslog. > > If those MD5 sums match, then these are apparently false positives and > we'll have to look into what's causing them. > > If, however, they do not match, replace "openssl md5" with "xxd" in the > command above, and try to interpret those hex dumps. Are they completely > different, do they not match at all, or are you seeing just one or two > seemingly random differences? > Yes, i saw differences. These sectors was not false positives. > And just so I understand you correctly: you > - unmounted your file system, > - made both devices Secondary, > - ran "drbdadm invalidate-remote <resource>", > - waited for the full sync to complete, > - ran "drbdadm verify <resource>" immediately thereafter, > - and even then you saw these out-of-sync messages in your syslog? > Correct. At the moment the problem is away. I did: change meta-disc to internal disable data-integrity-alg recreate DRBD device. It works on both nodes now without any problems. I will this week revert both settings and check when it happens again. Regards, Dimi -- Dimitrij Hilt Geschäftsführer / CEO FHE3 GmbH Griesbachstr. 5 76185 Karlsruhe FON: +49 721 499 3770 FAX: +49 721 499 3773 dimitrij.hilt at fhe3.com http://www.fhe3.com/ Amtsgericht Mannheim, HRB 702495 Umsatzsteuer-Ident: DE254677931 Geschäftsführer: Peter Eisenhauer, Michael Feger, Dimitrij Hilt