The "sfcfs...:read error" message indicates that an I/O error occurred while file system data was being read from a disk. The "sfcfs...:write error" message indicates that an I/O error occurred while file system data was being written to a disk.
If the messages are displayed, recovery processing is required because an I/O path or device is faulty.
Perform the recovery processing using the following procedures:
Locate the file system and partition in which the error occurred
Pinpoint it with sfcinfo(8), a GFS Shared File System management command, using the device number in the error message as a key.
# sfcinfo -d device-number <Enter> |
If an sfcfs...:write error occurs
This error indicates that file system information updated in memory cannot be reflected on the disk. If this happens, files in the file system should be backed up before unmounting to prevent the updated information from being lost by unmounting.
Unmount the file system service in which the error occurred
Unmount the file system service.
Correct the file system in which the error occurred
Restore data integrity of the file system using sfcfsck(8) after creating a copy of the file system data of the failed partition. After the file system is restored, replay update log and perform full check.
# sfcfsck -o log special-device-name <Enter> # sfcfsck -o nolog special-device-name <Enter> |
If the file system in which the error occurred cannot be corrected
When step 4 cannot repair the file system, swap the faulty part, re-create the file system, and restore the backed up data.
See
For corrective action against an I/O error of a GDS volume, see "Troubleshooting" of "PRIMECLUSTER Global Disk Services Configuration and Administration Guide." For details of backing-up and restoring, see "Chapter 13 File System Backing-up and Restoring."
