Some possible causes of an 557

Some possible causes of an 557 are * corrupted file system * corrupted journaled file system (JFS) log device * failing fsck (file system check) caused by a bad file system helper * bad hard disk in the machine that is a part of the rootvg To diagnose and fix these typical problems: Boot from bootable media and run fsck to fix any file systems that may be corrupted. With bootable media of the same version and technology level as the system, boot the system. The bootable media can be any one of the following: -Bootable CD-ROM or NON_AUTOINSTALL mksysb or Bootable Install Tape Follow the screen prompts to the following menu: Welcome to Base Operating System Installation and Maintenance Choose Start Maintenance Mode for System Recovery (Option 3). The next screen has the Maintenance Menu. Choose Access a Root Volume Group The next screen displays a warning that indicates you will not be able to return to the Base OS menu without rebooting. Choose 0 continue. The next screen displays information about all volume groups on the system. Select the root volume group by number. Choose Access this volume group and start a shell before mounting the filesystems (Option 2). If you get errors indicating that a physical volume is missing from the rootvg, run diagnostics on the physical volumes to find out if you have a bad disk. Do not continue with the rest of the steps in this document. If you get other errors from the preceding option, do not continue with the rest of the steps in this document. Next, run the following commands to check and repair file systems. (The -y option gives fsck permission to repair file systems when necessary.) fsck -y /dev/hd1 fsck -y /dev/hd2 fsck -y /dev/hd3 fsck -y /dev/hd4 fsck -y /dev/hd9var If fsck fails during the logredo phase, you will have to format the default jfslog (or j2fslog) for the rootvg JFS (or JFS2) file systems. /usr/sbin/logform /dev/hd8 Answer yes when asked if you want to destroy the log. Type exit. The file systems will automatically mount after you type exit.