Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Scenario: 2-node HA cluster has a DRBD resource that is connected but the primary node is diskless and probably has corrupted meta-data (stored internally), however when we try to detach/attach or disconnect/connect and several other steps it does not succeed. After all standard connect/attach procedures failed we tried to recreate the internal meta-data with create-md which says we must zero the drive or shrink the file system first...below are the results of that command. Status: The secondary node has Up-To-Date files and is in control of heartbeat, in production and functioning as desired. Question: If we zero that partition on primary will it destroy the files on the local partition ONLY ... then we can create new internal meta-data then sync it to secondary to get Up-To-Date files back on primary? We want to make sure that secondary is not affected by this procedure since it has the good files. [root at primary ~]# drbdadm create-md mysql md_offset 72826589184 al_offset 72826556416 bm_offset 72824332288 Found ext3 filesystem which uses 71119720 kB current configuration leaves usable 71117512 kB Device size would be truncated, which would corrupt data and result in 'access beyond end of device' errors. You need to either * use external meta data (recommended) * shrink that filesystem first * zero out the device (destroy the filesystem) Operation refused. Command 'drbdmeta /dev/drbd0 v08 /dev/cciss/c0d1p1 internal create-md' terminated with exit code 40 drbdadm aborting Primary drbd-overview: 0:mysql Connected Secondary/Primary Diskless/UpToDate C r--- Secondary drbd-overview 0:mysql Connected Primary/Secondary UpToDate/Diskless C r--- /shared ext3 67G 1.9G 62G 3% (FYI - drbd.conf should be attached - if it's not I will post a reply if anyone wants to see it) Error logs: [root at primary ~]# drbdadm attach mysql /dev/drbd0: Failure: (111) Low.dev. smaller than requested DRBD-dev. size. Command 'drbdsetup /dev/drbd0 disk /dev/cciss/c0d1p1 /dev/cciss/c0d1p1 internal --set-defaults --create-device --on-io-error=detach' terminated with exit code 10 -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.linbit.com/pipermail/drbd-user/attachments/20100920/e7d2fad5/attachment.htm> -------------- next part -------------- An embedded and charset-unspecified text was scrubbed... Name: drbd.conf.txt URL: <http://lists.linbit.com/pipermail/drbd-user/attachments/20100920/e7d2fad5/attachment.txt>