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[linux-lvm] I/O errors on two disks



I have six promise vtrack 15200 arrays in raid 5 config that I have
LVM'ed together to hold a disk copy of my backup data.  I restarted the
machine yesterday for the first time in a while and the filesystem seems
to be not quite right.  On both of these devices I am getting the
following errors:

[root sbackup ~]# vgscan
  Reading all physical volumes.  This may take a while...
  /dev/sdc: read failed after 0 of 4096 at 10499998285824: Input/output
error
  /dev/sdf: read failed after 0 of 4096 at 10499996450816: Input/output
error
  Found volume group "backupdisk" using metadata type lvm2

It doesnt make since that there is a bad sector because of the raid 5
nature and the arrays show perfect health.  I can read from the drive as
show by:

[root sbackup ~]# dd if=/dev/sdc of=/dev/null
1744873+0 records in
1744872+0 records out
893374464 bytes (893 MB) copied, 29.2183 seconds, 30.6 MB/s

Note: I did a ctrl C

Any ideas on how to repair?

thanks,

Dan


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