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Full Discussion: Run fsck on root file system
Top Forums UNIX for Dummies Questions & Answers Run fsck on root file system Post 302406720 by Beaknit on Tuesday 23rd of March 2010 05:12:55 PM
Old 03-23-2010
Your instinct is correct. Don't mess around and get tricky or you will live to regret it. Go simple and boot from knoppix.

And back up anything critical before you do any filesystem repair - even if it's on another volume or partition.
 

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pvck(1M)																  pvck(1M)

NAME
pvck - check or repair a physical volume in LVM volume group SYNOPSIS
pv_path pv_path DESCRIPTION
This command is supported for arguments belonging to volume groups version 1.0. Attempting this command with arguments belonging to volume groups version 2.0 or higher will result in an error. Note: Currently is only capable of detecting bad checksums caused by a forward system migration after a backward system migration. It should not be used in other situations. The command examines and repairs LVM data structures on a raw disk (pv_path) in a volume group. Options and Arguments recognizes the following options and arguments. Repair problems found. Report, but do not repair problems. pv_path The raw device path name of a physical volume. RETURN VALUE
returns the following values Either no problems were found or all problems were corrected. Unable to repair. EXAMPLES
Examine LVM checksums on without modifying anything: Repair LVM checksums on if necessary: WARNINGS
should only be run on a device whose volume group has not been activated. is designed to repair the root device or devices while the system is booted in maintenance mode ("", see hpux(1M) on PA-RISC systems). AUTHOR
was developed by HP. SEE ALSO
intro(7), lvm(7). pvck(1M)
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