Hi all, I was modifying my LVM configuration when I've noticed something unknown, after issuing the df command : Filesystem 1K-blocks Used Available Use% Mounted on /dev/hda1 497829 92395 379732 20% / /dev/system/home 3985280 137620 3847660 4% /home /dev/system/opt 5242716 33260 5209456 1% /opt /dev/system/usr 9334492 769880 8564612 9% /usr /dev/system/var 7028516 59708 6968808 1% /var shmfs 127188 0 127188 0% /dev/shm <-------------------- What's this? /dev/system/mysqldb 3145628 32840 3112788 2% /mysqldb What is shmfs? Thanks! Best regards, Steve Hemond Programmeur Analyste / Analyst Programmer Smurfit-Stone, Ressources Forestières La Tuque, P.Q. Tel.: (819) 676-8100 X2833 mailto:shemond@smurfit.com
I was modifying my LVM configuration when I've noticed something unknown, after issuing the df command : shmfs 127188 0 127188 0% /dev/shm What is shmfs?
It's nothing to do with LVM. It's the shared memory psuedo filesystem and it's created and mounted automatically. It's used as a convenient mechanism for applications to share large amounts of data. Despite the way it looks in filesystem related tools like 'df', it doesn't take up any space on disk, and only occupies as much memory as is necessary. --
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participants (2)
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Derek Fountain
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Hemond, Steve