Expect expect is a tool for automating interactive applications such as telnet, ftp, passwd, fsck, rlogin. Because the root, usr, and var file systems cannot be unmounted, these file systems should only have fsck run on them while in singleuser mode. For information about installing a new disk, see chapter 12, sparc. The best way to go about checking a filesystem is to boot from live media, choose try ubuntu and then manually fsck the partition in question. Linux fsck utility is used to check and repair linux filesystems ext2, ext3, ext4, etc.
For example sudo fsck devzdxy where zdxy is the partition in question. Echo the expanded command line but do not execute the command. This article explains 10 practical examples on how to execute fsck command to troubleshoot and fix any filesystem errors. Solaris everything you need to know before you run fsck. Top 10 free linux distributions for desktop and servers. While running fsck on exporthome what will the fsck command do if the system. To verify the capture the threadlist for solaris 10 we have. If the adjustment does not fix the error, use the find command to track down the problem. You can change the complete check frequency with the tune2fs command. Journaling file systems avoid the need to run fsck macos journaling is on by default in macos 10.
If you delete the directory, you might find that the fsck command runs cleanly. Libraries dependencies 0 the following tables display the sub list of packages, from the reverse dependencies, that depends on the libs provided by top. In solaris 10 cluster, a third server could also be assigned as a quorum device. I need to have a solution to run fsck and perform a ufsdump on a solaris 8 sparc server that includes oracle 8i 8. This book is for anyone responsible for administering one or more systems that run the oracle solaris 10 release. System administrator could also run it manually when there is a problem with the filesystems. The solaris 10 system software includes aset, which helps you monitor and control system security by automatically performing tasks you would otherwise do manually. Furthermore, another page indicated that the y option of the fsck command could be used to automatically reply y to all prompts from the fsck command when fsck asked if it was ok to do a suggested action. When all the blocks have been accounted for, the fsck command checks to see if the number of free blocks plus the number of blocks that are claimed by the inodes equal the total number of blocks in the file system. To do this, you create a quorum device when you install the cluster. Assume a no response to all questions asked by fsck. It does not make sense to run fsck on a zfs file system. Depending on when was the last time a file system was checked, the system runs the fsck during boot time to check whether the filesystem is in consistent state. The y option gives fsck permission to carry out any repairs it suggests.
The fsck8 manpage on linux includes the following table of exit codes. Solaris 10, solaris install, solaris partitions, solaris ufs. Sep 02, 20 in linux and mac, there is this powerful command fsck that you can use to check and repair your filesystem. Unlike of the fsck command which had to be run on an unmounted filesystem read. Solaris does have fsck and it can be run on many file systems.
Never run the fsck command on a mounted file system. For example, the messages might point to a damaged directory. The hfs file system has been obsoleted in hpux since version 10, except for the stand file system which contains the kernel, and youre not. There is a companion option n to answer no to every question. Dhcp negotiation failed, perhaps misconfigured or no dhcp server available y devmddskd60 currently mounted on exporthome phase 1 check blocks and sizes phase 2 check pathnames phase 3a check connectivity phase 3b verify shadows. When fsck is running interactively, all the diagnostics are printed out, but fsck does not attempt to fix anything. I will use this solution on a monthly basis, or whenever the need arises. Migration to an oracle solaris zone on an oracle solaris 10 host. Dec 06, 2006 this the procedure to run fsck when your system crash and couldnt boot.
The exit code returned by fsck is the sum of the following conditions. On a sparc 20 system, fsck for the file system looks like this. When all the blocks have been accounted for, the fsck command checks to see if the number of free blocks plus the number of blocks that are claimed by the inodes equal the total number of blocks in. Jun 03, 2006 for you worriers, there is a command you can use to make sure everything is okay with your filesystems. Use the fsck command on the root partition to check and repair any potential problems in the file system. Topics are described for both sparc and x86 based systems, where appropriate. If the file system is inconsistent, fsck provides a mechanism to fix these inconsistencies, depending on which form of the fsck command is used. Solaris 10 606 release, see enhancements to ufs file system utilities fsck. The hfs file system has been obsoleted in hpux since version 10, except for the stand file system which contains the kernel, and youre not going to unmount the kernel and run a file system check.
Solaris add install new software packages nixcraft. The kinds of consistency checks that the fsck command applies to these ufs. On most systems, fsck is run at boot time if certain conditions are detected. Mount the install cd or dvd with the package you wish to install. Keep the following points in mind when running the fsck command to check ufs. The system utility fsck file system consistency check is a tool for checking the consistency of a file system in unix and unixlike operating systems, such as linux, macos, and freebsd.
During the boot, hold down the shift key so that the grub menu is shown. Nfs or downloading from internet and then add it to system, or from existing location such as varspoolpkg directory if. For you worriers, there is a command you can use to make sure everything is okay with your filesystems. Although solaris 7, 8, and 9, still retain fsck, it is really only necessary for solaris 2. Sun services intermediate system administration for the solaris 10 operating system sa200s10 intermediate system administration for. However, with the release of zfs from solaris, fsck is quickly being phased out by the zpool scrub command. Most of the times a disk on the shared storage device acts as the third quorum device. Ok the user has given fsck the name of a regular file by mistake. A similar command, chkdsk, exists in microsoft windows and its ancestor. The fsck command checks that all the blocks marked as free are not claimed by any files.
So, to force a root filesystem check, one of the easy way is to reboot the system, and force fsck to perform the filesystem when the system is starting up before the root filesystem is mounted by the kernel. How to repair file system with a system utility fsck in. On unixlike operating systems, the fsck command checks and repairs a linux file system. Use the svccfg command changes or modifications to the configuration of network services are done using the inetadm or svccfg commands the default etcnf file now contains only a few entries, unlike in previous versions of solaris where all. Is there a ways to force solaris 10 to run fsck on next reboot. It uses a combination of builtin tools to check the disk and generates a report of its findings. Interactively checking and repairing a ufs file system oracle.
The book covers a range of oracle solaris system administration topics related to managing removable media, disks and devices, file systems, and backing up and restoring data. If the file system is ready for mounting, fsck displays a message such as. On some systems, fsck runs automatically after an unclean shutdown or after a certain number of reboots. Dhcp negotiation failed, perhaps misconfigured or no dhcp server available sc alert. Linux fsck command help and examples computer hope. Analysis of the oracle solaris configuration, including networking, storage, and oracle solaris operating system features in use. Ok then, youll need to break the mirrors to deal with the disks separately if you havent already. I perform this function manually now and would like to automate this process. How to repair file system with a system utility fsck in freebsd. This document describes the gnu linux version of fsck. How to use fsck to repair file system errors in linux. Checking inodes, blocks, and sizes inode 2060353 is a unknown file type with mode 0173 but it looks like it is really a directory. Solaris add install new software packages last updated february 1, 2005 in categories news package can be install from cdrom, network i. Typically, when you create an ext2 or ext3 file system, fsck is told to run a complete check every 20 or 30 times the file system is mounted.
The following is the vxfsspecific format of the fsck command. Checking group summary information 449 inodes used 0. Change the bios to boot form the right half of the mirror already done i believe and reboot the server, use the metadetach command to remove the left mirror from the mirror device, then the metaclear command to destroy the concatstripe device containing the leftmirrors slice. If the fsck command still cannot repair the file system, try to use the ff, clri, and. How to force check root filesystem using fsck during reboot. Stop any critical services like mysqlmariadb etc and then type.
For more information about this feature, see automatic search for backup superblocks. The file system devrdskc1t0d0s0 the unix and linux forums. When run, the command checks all data in the pool for checksum. How to use fsck to find and repair disk errors and bad. Interactively checking and repairing a ufs file system oracle docs. How to restore a bad superblock solaris 8, 9, and 10. The system administration for the oracle solaris 10 os, part 1 course helps students gain expertise in the basic system administration concepts of oracle solaris 10. Oct 14, 20 if the file system is ready for mounting, fsck displays a message such as. Check and repair your filesystem with fsck linux make. Aset performs seven tasks, making specific checks and adjustments to system files and permissions to ensure system security. To force the fsck during reboot, first create an empty file called forcefsck under. Install a package from solaris 10 cd oracle community. Which file on solaris 10 software cdrom 2 contains the software required to. System administration for the oracle solaris 10 os part 2 new.
Migration to an oracle solaris zone on an oracle solaris 11 host. Let it run to completion and you should not be bothered by fsck until the next complete check is run. File system can become inconsistent due to several reasons and the most common is abnormal shutdown due to hardware failure, power failure or switching off the system without proper shutdown. Part 2 monitoring tools, network, packagespatches, run levels, broadcast messages, services, noteable files, vi tricks. How to fsck or check filesystem integrity with scrub. Normally, the fsck program will try to handle filesystems on different physical disk drives in parallel to reduce the total amount of time needed to check all of them.
Syntax and options for the fsck command system administration. This could leave the file system in an unstable state and could result in the loss of data. Mar 05, 2014 the fsck command checks that all the blocks marked as free are not claimed by any files. Filesystem consistency check and interactive repair. The solaris fsck command uses a state flag, which is stored in the superblock. A similar command, chkdsk, exists in microsoft windows and its ancestor msdos. Choose one of these partitions, and run fsck on it. Solaris administration course will cover all aspects of sa1, sa2 certification and the basics of unix in detail. In linux and mac, there is this powerful command fsck that you can use to check and repair your filesystem. Running fsck in rescue mode requires few more steps. System administration for the oracle solaris 10 os, part 1 new.
If no filesystems are specified on the command line, and the a option is not specified, fsck will default to checking filesystems in. Repairing linux ext2 or ext3 or ext4 file system fsck. For example, to check the partition devada0s1a, run the following command. Pay attention to the information displayed by the fsck command. If the fsck command is successful, mount the root file system on the a directory to gain access to the file system on disk. You can use the fsck o b command to replace the superblock with one of these copies or use fsck s automatic search for backup superblocks feature, which is new in the solaris 10 606 release. If no filesystems are specified on the command line, and the a option is not specified, fsck will default to checking filesystems in etcfstab serially. Optionsb use the block specified immediately after the flag as the.
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