3.5.1 Matrix Server Command Reference

Chapter 1: Matrix Server Commands 38

When psfsck is running in check mode (the default action), it will attempt to

fix any corruptions that can be repaired without --rebuild-tree. The types of

corruption that can be fixed include: bad pointers to data blocks, incorrect

st_size and st_blocks in a directory, directory entries pointing to nowhere,

incorrect file sizes and modes, and objectid sharing.

NOTE: The psfsck utility requires exclusive access to the device. If it cannot

obtain exclusive access, it will exit with an “ebusy” message.

The options for checking a filesystem are:

--check

Check filesystem consistency. This is the default action.

--rebuild-tree

Rebuild the filesystem tree using leaf nodes found on the device.

Normally you need this option only if check mode (without the

-no-modify flag) reports errors that can be fixed only by --rebuild-tree.

You are strongly encouraged to make a backup copy of the whole partition

before attempting to rebuild.

If --rebuild-tree encounters any files that had been open and unlinked,

psfsck will move the files into the lost+found directory.

--rebuild-sb

Rebuild the superblock.

--rebuild-quotas

Repair any errors in the quota metadata and recalculate user and group

quota allocations.

--interactive, -i

Stop psfsck after each pass is completed.

--quiet, -q

Prevent psfsck from reflecting its progress.

--logfile filename, -l logfilename

Tell psfsck to place information about any corruption it finds into the

specified logfile instead of sending it to stderr.

--no-modify, -n

Check the filesystem in read-only mode. Prevents psfsck from replaying

the journal and/or fixing any corruption. If errors are found, it is strongly