Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Hi, Just out of curiosity (not to answer your question, sorry !), which kernel do you use ? When going _back_ from 2.6.25-2-686-bigmem to 2.6.18-6-686-bigmem (Debian Etch), I experienced way less errors : one out-of-sync in nearly a week instead of one every two minutes. Then, even with the flood of errors detected (which I quickly stopped trying to correct) when I used 2.6.25-2-686-bigmem, I didn't notice any data corruption (that I can tell). I've now de-activated checksum offloading in the network cards and activated verify-alfg crc32c, and so far I've only noticed one out-of-sync occurence. Still, there shouldn't be any ! (Memtest didn't detect any RAM defect) Eric Schmidt, Florian a écrit : > Hello everyone again, > > I just added verify-alfg crc32c; to my drbd.conf and ran drbdadm verify > all > > After that I saw lots of out-of-sync secrots in dmesg. > I thought: OK, lets sync and then everything should be alright. > > But after the sync (drbdadm disconnect and connect all on primary one), > a re-run of drbdadm verify all still found out-of-sync sectors. > > So I googled around and saw that there where also people having this > problem before. > > I found the following command and executed this on a sector, reported as > out of sync: > > drbd3: Out of sync: start=192896, size=24 (sectors) > <lots of lines of them> > > [root at saprouter1 ~]# dd if=/dev/sda9 skip=192896 bs=512 count=24 > iflag=direct | openssl md5 > 24+0 records in > 24+0 records out > 12288 bytes (12 kB) copied, 6.06248 seconds, 2.0 kB/s > 6d79f038d772cac9ce34af477574ef7d > > [root at saprouter2 ~]# dd if=/dev/sda9 skip=192896 bs=512 count=24 > iflag=direct | openssl md5 > 24+0 records in > 24+0 records out > 12288 bytes (12 kB) copied, 1.93692 seconds, 6.3 kB/s > 30704f13388d5e23d644e44996cc2b62 > > Uh, just found something very strange after executing the command again: > > [root at saprouter2 ~]# dd if=/dev/sda9 skip=192896 bs=512 count=24 > iflag=direct | openssl md5 > 24+0 records in > 24+0 records out > 12288 bytes (12 kB) copied, 1.93692 seconds, 6.3 kB/s > 30704f13388d5e23d644e44996cc2b62 > [root at saprouter2 ~]# dd if=/dev/sda9 skip=192896 bs=512 count=24 > iflag=direct | openssl md5 > 24+0 records in > 24+0 records out > a2915f04e3533f1f329ac9eab8a875f9 > 12288 bytes (12 kB) copied, 0.99269 seconds, 12.4 kB/s > [root at saprouter2 ~]# dd if=/dev/sda9 skip=192896 bs=512 count=24 > iflag=direct | openssl md5 > 24+0 records in > 24+0 records out > 12288 bytes (12 kB) copied, 0.856155 seconds, 14.4 kB/s > b94b4be0da055b290d4ae4d421cf17f0 > [root at saprouter2 ~]# dd if=/dev/sda9 skip=192896 bs=512 count=24 > iflag=direct | openssl md5 > 24+0 records in > 24+0 records out > 12288 bytes (12 kB) copiedb94b4be0da055b290d4ae4d421cf17f0 > , 0.597763 seconds, 20.6 kB/s > [root at saprouter2 ~]# dd if=/dev/sda9 skip=192896 bs=512 count=24 > iflag=direct | openssl md5 > 24+0 records in > 24+0 records out > 12288 bytes (12 kB) copieda2915f04e3533f1f329ac9eab8a875f9 > , 0.621022 seconds, 19.8 kB/s > [root at saprouter2 ~]# dd if=/dev/sda9 skip=192896 bs=512 count=24 > iflag=direct | openssl md5 > 24+0 records in > 24+0 records out > 12288 bytes (12 kB) copied6d79f038d772cac9ce34af477574ef7d > , 0.041115 seconds, 299 kB/s > > How could there be sometimes different checksums? O_o > Problems with the RAID-driver? > > Current state is: > > [root at saprouter1 ~]# /etc/init.d/drbd status > drbd driver loaded OK; device status: > version: 8.2.6 (api:88/proto:86-88) > GIT-hash: 3e69822d3bb4920a8c1bfdf7d647169eba7d2eb4 build by > buildsvn at c5-i386-build, 2008-06-02 10:17:29 > m:res cs st ds p > mounted fstype > 0:drbd_afd Connected Secondary/Secondary UpToDate/UpToDate C > 1:drbd_ftpdata Connected Secondary/Secondary UpToDate/UpToDate C > 2:drbd_saprouter Connected Secondary/Secondary UpToDate/UpToDate C > 3:drbd_configs Connected Secondary/Secondary UpToDate/UpToDate C > > Greetings and sorry for bothering again^^ > Florian > _______________________________________________ > drbd-user mailing list > drbd-user at lists.linbit.com > http://lists.linbit.com/mailman/listinfo/drbd-user >