Re: Input/output error when using dd

[Joe Julian <joe@xxxxxxxxxxxxxxxx>]

[19:33] <JoeJulian> AceFacee check "gluster volume heal DSR info"
[19:33] <JoeJulian> it sounds like split-brain.
[19:34] <JoeJulian> @split-brain
[19:34] <glusterbot> JoeJulian: To heal split-brains, see https://gluster.readthedocs.org/en/release-3.7.0/Features/heal-info-and-split-brain-resolution/ For additional information, see this older article https://joejulian.name/blog/fixing-split-brain-with-glusterfs-33/ Also see splitmount https://joejulian.name/blog/glusterfs-split-brain-recovery-made-easy/

On 10/05/2015 05:43 PM, Cobin Bluth wrote:

Please see the following:

root@Asus:/mnt/GlusterFS-POC# mount

[ ...truncated... ]

GlusterFS1:DSR on /mnt/GlusterFS-POC type fuse.glusterfs (rw,relatime,user_id=0,group_id=0,default_permissions,allow_other,max_read=131072)

root@Asus:/mnt/GlusterFS-POC# pwd

/mnt/GlusterFS-POC

root@Asus:/mnt/GlusterFS-POC# for i in {1..10}; do cat /mnt/10MB-File > $i.tmp; done

cat: write error: Input/output error

cat: write error: Input/output error

cat: write error: Input/output error

cat: write error: Input/output error

cat: write error: Input/output error

cat: write error: Input/output error

cat: write error: Input/output error

cat: write error: Input/output error

cat: write error: Input/output error

cat: write error: Input/output error

cat: write error: Input/output error

cat: write error: Input/output error

cat: write error: Input/output error

cat: write error: Input/output error

cat: write error: Input/output error

cat: write error: Input/output error

cat: write error: Input/output error

cat: write error: Input/output error

cat: write error: Input/output error

cat: write error: Input/output error

root@Asus:/mnt/GlusterFS-POC# cat /mnt/10MB-File > test-file

cat: write error: Input/output error

cat: write error: Input/output error

root@Asus:/mnt/GlusterFS-POC# dd if=/dev/zero of=test-file bs=1M count=10

dd: error writing ‘test-file’: Input/output error

dd: closing output file ‘test-file’: Input/output error

root@Asus:/mnt/GlusterFS-POC# ls -lsha

total 444K

9.0K drwxr-xr-x  4 root root 4.1K Oct  5 17:32 .

4.0K drwxr-xr-x 10 root root 4.0K Oct  5 17:16 ..

 13K -rw-r--r--  1 root root 257K Oct  5 17:30 10.tmp

1.0K -rw-r--r--  1 root root 129K Oct  5 17:30 1.tmp

 13K -rw-r--r--  1 root root 257K Oct  5 17:30 2.tmp

1.0K -rw-r--r--  1 root root 129K Oct  5 17:30 3.tmp

 13K -rw-r--r--  1 root root 257K Oct  5 17:30 4.tmp

 13K -rw-r--r--  1 root root 257K Oct  5 17:30 5.tmp

 13K -rw-r--r--  1 root root 257K Oct  5 17:30 6.tmp

 13K -rw-r--r--  1 root root 257K Oct  5 17:30 7.tmp

 13K -rw-r--r--  1 root root 257K Oct  5 17:30 8.tmp

 13K -rw-r--r--  1 root root 257K Oct  5 17:30 9.tmp

329K -rw-r--r--  1 root root 385K Oct  5 17:32 test-file

   0 drwxr-xr-x  3 root root   48 Oct  5 16:05 .trashcan

root@Asus:/mnt/GlusterFS-POC#

I am trying to do tests on my gluster volume to see how well it will work for me.

I am getting that error when I try to use dd on it.

What would be the best way to troubleshoot this?

Thanks,

Cobin

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