Sorry if this is not the appropriate place to ask -- I would appreciate if you would direct me to the right site :-) Since a few days, we get lots of messages like Mar 19 15:45:12 server kernel: raid0_map bug: hash->zone0==NULL for block 1895815569 Mar 19 15:45:12 server kernel: Bad md_map in ll_rw_block Mar 19 15:45:12 server kernel: raid0_map bug: hash->zone0==NULL for block 1895815569 Mar 19 15:45:12 server kernel: Bad md_map in ll_rw_block Mar 19 15:45:15 server kernel: raid0_map bug: hash->zone0==NULL for block 1895815569 in our syslogs. We have RedHat 6.0 with kernel 2.11 and the raid-patches for that kernel. /proc/mdstat contains Personalities : [raid0] [translucent] read_ahead 1024 sectors md0 : active raid0 sdc1[1] sdb1[0] 17847936 blocks 16k chunks unused devices: <none> and our raidtab is raiddev /dev/md0 raid-level 0 persistent-superblock 1 nr-raid-disks 2 nr-spare-disks 0 chunk-size 16 device /dev/sdb1 raid-disk 0 device /dev/sdc1 raid-disk 1 Do we have to fear something really weird? What are youre suggestions? I would like to reconstruct the raid, but I have to install a backup server, first ... BTW, should we stay with kernel 2.2.11, or should we upgrade to 2.14 and the raid patches at http://people.redhat.com/mingo/? Many thanks for your attention! Regards, Ulf P.S.: Please CC: me, I'm not on this list at the moment! -- ====================================================================== Ulf Mehlig <[EMAIL PROTECTED]> Center for Tropical Marine Ecology/ZMT, Bremen, Germany ----------------------------------------------------------------------