mount -l /dev/md1 on / type ext4 (rw,errors=remount-ro) proc on /proc type proc (rw,noexec,nosuid,nodev) none on /sys type sysfs (rw,noexec,nosuid,nodev) fusectl on /sys/fs/fuse/connections type fusectl (rw) none on /sys/kernel/debug type debugfs (rw) none on /sys/kernel/security type securityfs (rw) none on /dev type devtmpfs (rw,mode=0755) none on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620) none on /dev/shm type tmpfs (rw,nosuid,nodev) none on /var/run type tmpfs (rw,nosuid,mode=0755) none on /var/lock type tmpfs (rw,noexec,nosuid,nodev) /dev/md2 on /mnt/data type ext4 (rw)
So, freshly installed ext4. On 07/26/2011 05:18 PM, Alan Pope wrote: > What filesystem is on /dev/md1 (the sd*5 disks)? > > I observe similar behaviour (large IO, none through the md device) on my > server running 10.04. So I don't believe you should be seeing the IO go > via md* devices in iotop:- > > > avg-cpu: %user %nice %system %iowait %steal %idle > 0.49 0.00 4.39 95.12 0.00 0.00 > > Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn > sda 64.00 0.00 520.00 0 1040 > sdb 78.50 0.00 664.00 0 1328 > sdc 64.50 0.00 536.00 0 1072 > sdd 67.50 0.00 560.00 0 1120 > sde 0.00 0.00 0.00 0 0 > md0 0.00 0.00 0.00 0 0 > dm-0 0.00 0.00 0.00 0 0 > > > md0 : active raid10 sda1[2] sdc1[3] sdd1[0] sdb1[1] > 3907023872 blocks 64K chunks 2 near-copies [4/4] [UUUU] > > Periodically I do see this:- > > avg-cpu: %user %nice %system %iowait %steal %idle > 0.50 0.00 3.75 95.75 0.00 0.00 > > Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn > sda 42.50 0.00 1016.00 0 2032 > sdb 75.50 0.00 716.00 0 1432 > sdc 22.50 0.00 856.00 0 1712 > sdd 39.00 0.00 800.00 0 1600 > sde 0.00 0.00 0.00 0 0 > md0 7733.50 0.00 61868.00 0 123736 > dm-0 7674.50 0.00 61396.00 0 122792 > > (high md0 tps) but only for brief periods. > > Sorry if this isnt helpful, just trying to see if you're barking up the > wrong tree with the md0 io post at the bottom. > -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/815540 Title: Server becomes unresponsive after spawning 16 ksoftirqd processes To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/815540/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
