This just barely started occurring and I feel like this is not a bug but a configuration error (hopefully). I'm on 12.04, 64-bit and have been happily stable for many months. My RAID1 is years old and has also had no issues until recently. The disks are healthy. As of today, though, every time I try to copy files over to the RAID the journaling daemon goes bonkers and uses 99% of the disk IO, forcing my file transfer speed to pathetic amounts (usually 1 MB/s).
I've tried restarting to no effect (I haven't changed any settings anywhere to my knowledge. Attached is a screenshot of iotop demonstrating the usage:
When not copying it goes back down to 0 percent.
Here is my /etc/fstab:
# / was on /dev/sdh2 during installation
UUID=15bb606e-54af-4fa3-8341-12824a404dae / ext4 errors=remount-ro 0 1
# /home was on /dev/sdh3 during installation
UUID=9eed87ee-f9d5-47c7-91e5-b82696142f7e /home ext4 defaults 0 2
# swap was on /dev/sdh4 during installation
UUID=27f06259-705d-48ba-83d6-3e1837a87198 none swap sw 0 0
# Music RAID
UUID=d10e627b-6068-4734-9111-5e2f71dbbe4f /media/Music_Library ext4 auto,user,sync 0 1
output of /proc/mdstat:
Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10]
md127 : active raid1 sdb1[1] sdh1[0]
292968181 blocks super 1.2 [2/2] [UU]
unused devices: <none>
df -h:
/dev/md127p1 276G 112G 150G 43% /media/Music_Library
Please advise, and thank you :)
sync
mount option?sudo mount -o remount /media/Music_Library
or reboot) Please also provide more information on the RAID status (e.g.cat /proc/mdstat
) and the file system usage (df -h -P | grep Music_Library
). If it's used to higher limits, say > 90% this can also cause severe performance degradation.