Hello! Sorry, I have no solution but I'm searching too! I observed this error with kernel 2.4.19-64GB-SMP (Suse). We use raid1 with 2 mirrors. Very often when I detach a mirror by /mdadm /dev/md0 -f /dev/sda1 -r /dev/sda1 and then reattach it by /mdadm /dev/md0 -a /dev/sda1 I too get ... speed=0K/sec After rebooting the resynch really starts. Moreover sometimes after detaching (... -f ... -r ...) I have either raid1d or mdrecoveryd obviously looping uninterruptible on a CPU. Program top then shows this: ---------------------------------------------------------------------------- ---- 2:08pm up 4:03, 5 users, load average: 14.23, 14.55, 14.11 226 processes: 219 sleeping, 7 running, 0 zombie, 0 stopped CPU0 states: 0.0% user, 100.0% system, 0.0% nice, 0.0% idle CPU1 states: 8.0% user, 13.1% system, 0.0% nice, 78.3% idle Mem: 1162020K av, 868428K used, 293592K free, 0K shrd, 84904K buff Swap: 722808K av, 0K used, 722808K free 554484K cached PID USER PRI NI SIZE RSS SHARE STAT %CPU %MEM TIME COMMAND 20 root 19 0 0 0 0 RW 99.8 0.0 161:14 raid1d 1408 isele 15 0 1112 1112 768 R 5.8 0.0 8:48 top ---------------------------------------------------------------------------- ----- At 21:40 10.04.03 -0400, Paul Clements wrote: >Hi, > >Rob Hagopian wrote: > >> Personalities : [linear] [raid0] [raid1] [raid5] >> read_ahead 1024 sectors >> md7 : active raid1 sdb6[2] sda6[0] >> 1052160 blocks [2/1] [U_] >> >> md0 : active raid1 sdb1[2] sda1[0] >> 128384 blocks [2/1] [U_] >> [>....................] recovery = 0.0% (0/128384) >> finish=3658.9min speed=0K/sec > >Have you been able to reproduce this problem with any regularity? Or >have you tried? I have an idea what *might* be causing this, if you're >willing to try out a patch... > >BTW, the md "BUG" you originally reported is not really a bug -- that >always happens when you try to raidhotremove an active disk. > >-- >Paul >- >To unsubscribe from this list: send the line "unsubscribe linux-raid" in >the body of a message to majordomo@vger.kernel.org >More majordomo info at http://vger.kernel.org/majordomo-info.html > - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
