On a VM, when we go to create the drbd0 file system, mke2fs writes out a warning,47 blocks unused. Using tune2fs -l, both drbd0, and the physical device sda6, have a block count of 14909440 and a block size of 4096. From my calculations below, it looks like drbd meta data has included the 47 unused blocks and the file system has not. I have never seen "warning: 47 blocks unused" message before. Not sure if it is related to the VM, the size of the partition. Does anyone know what this warning is trying to tell me ? Any thought on why mke2fs would not use all the blocks ? No bad blocks were detected. When I calculate the size of the meta data, it seem to include the unused blocks, do you know if this is correct ? Do I need to specify the number of blocks for this case, when creating the drbd device ? Any information would be greatly appreciated. /Chris Sonus Networks
ERROR:local drbd fs mismatch MetaData 59637948 sda6 59637760 drbd0 59637760 Writing meta data... initializing activity log NOT initialized bitmap New drbd meta data block successfully created. [root@SUZUKA05 sonus]# sleep 1 [root@SUZUKA05 sonus]# /sbin/service drbd start [....] Starting DRBD resources:[ d(mirror) s(mirror) n(mirror) ]. ok [root@SUZUKA05 sonus]# /sbin/drbdadm -- --overwrite-data-of-peer primary mirror [root@SUZUKA05 sonus]# /sbin/mke2fs -j /dev/drbd0 | colcrt - 2> /tmp/cld.txt mke2fs 1.42.5 (29-Jul-2012) warning: 47 blocks unused. Filesystem label= OS type: Linux Block size=4096 (log=2) root@SUZUKA05 sonus]# cat /proc/partitions major minor #blocks name 8 6 59639808 sda6 147 0 59637948 drbd0 [root@SUZUKA05 sonus]# expr $((((14909440+47)*4096)/1024)) 59637948 [root@SUZUKA05 sonus]# expr $((((14909440+0)*4096)/1024)) 59637760 [root@SUZUKA05 sonus]# expr $((59637948-59637760)) 188 [root@SUZUKA05 sonus]# expr $(((47*4096)/1024)) 188
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