Hi XFS team,Â
We encountered a problem frequently in past three weeks. Our daemons store data to XFS partition associate with xattr. Â
Disk seems not responding since all processes to this disk in D state and can't be killed at all.Â
- It happens on several disks. I feel it's randomly.Â
- Reboot seems solve the problem temporarily.Â
- All disks are multipath devices.Â
I suspected that's an issue from disk corrupted at beginning. But smartctl doesn't show any clue about disk bad. And reboot makes the problem gone away.Â
- Any process to this disk is blocked. Even a simple $ls .ÂKernel log
- I tested the disk by read bytes on block via $dd . It works fine without any error in dmesg.Â
- The `xfs_repair -n` output of a problematic mount pointÂ[xfs_repair -n]Â. It is still processing.Â
- Kernel :ÂLinux node9 2.6.32-573.8.1.el6.x86_64 #1 SMP Tue Nov 10 18:01:38 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
- OS :ÂCentOS release 6.5 (Final)
- XFS :Âxfsprogs.x86_64 Â Â Â Â 3.1.1-14.el6
There's an interesting behaviour of $ls command.
* This is completed in 1sec. Very quick and give me the result in the test.d864 file $ls /srv/node/d864/tmp > test.d864
* This is hanging $ls /srv/node/d864/tmp
I suspect there's something wrong with imap. Is there a known bug ?
Thanks // Hugo Â
