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→Filesystem Corrupt
= Miscellaneous =
=== <u>Filesystem Corrupt</u> ===
{{Code|e2fsck -p /dev/hda7}}
* If the program complains that the superblock - the master block that links to everything else - is corrupted, it is useful to remember that the superblock is so critical that it is duplicated every 8192 blocks through the filesystem and you can tell e2fsck to use one of the backups:
{{Code|e2fsck -b 8193 /dev/hda7}}
* One or more filesystems cannot be found and mounted: Check the contents of /etc/fstab - in making quick alterations here, typographical errors are common. You can use the e2label command to view the label of each filesystem: some distributions set these to the mount point so you can figure out what is what.
=== <u>Filesystem Full</u> ===
Is a filesystem full? This can show up in lots of different ways: being unable to save files, print jobs not spooling correctly (especially on Samba print/file servers), and so on. Use the df command to see available space:
<pre>[root@freya home]# df -H
Filesystem Size Used Avail Use% Mounted on
/dev/Volume00/LogVol00 520MB 254MB 240MB 52% /
/dev/hda3 128MB 2 1MB 101MB 17% /boot
/dev/Volume00/LogVol03 2.2GB 134MB 1.9GB 7% /home
/dev/Volume00/LogVol05 520MB 8.5MB 485MB 2% /opt
none 264MB 0 264MB 0% /dev/shm
/dev/Volume00/LogVol02 1.1GB 36MB 969MB 4% /tmp
/dev/Volume00/LogVol01 4.3GB 3.0GB 1.1GB 75% /usr
/dev/Volume00/LogVol06 1.1GB 101MB 903MB 11% /usr/local
/dev/Volume00/LogVol04 3.2GB 2.3GB 756MB 75% /var
/dev/hda1 16GB 13GB 2.8GB 83% /mnt/winc</pre>
* Remember that a filesystem can fill up either because almost all of its data blocks are used up (some are reserved for the root user, just to get out of trouble) or because all its i-nodes (there is one of these per file) are used up.
* If you need to make space by deleting some large files, use the command 'ls -lS' to get a directory listing that is sorted by file size. To scan an entire filesystem (e.g. /home or /var) for the largest files, use the command:
{{Code|du | sort -n}}
The largest files will be at the end of the listing.
