"引导时挂载的分区，但未在 fstab 中列出"

Question

I thought I was a fairly advanced Linux administrator working on a Centos (Fedora) machine. I have modified fstab to not mount a particular partition at boot, yet it keeps mounting. It is no longer in fstab, but I can see it mounted in mtab (last line) on reboot. It is immediately mounted, as soon as I login. Any idea at what point during a reboot this partition could be mounting? I didn't see anything in cron, but not certain. any ideas on where to look for clues would be great. Thanks in advance.

LABEL=/                 /                       ext3    defaults        1 1
LABEL=/boot             /boot                   ext3    defaults        1 2
devpts                  /dev/pts                devpts  gid=5,mode=620  0 0
tmpfs                   /dev/shm                tmpfs   defaults        0 0
proc                    /proc                   proc    defaults        0 0
sysfs                   /sys                    sysfs   defaults        0 0
LABEL=SWAP-sda2         swap                    swap    defaults        0 0

Answer 1

It's very possible that it's being mounted by the automounter. Try disabling the autofs service ( sudo chkconfig autofs off ) and rebooting - if it doesn't mount with autofs turned off, have a like at /etc/auto.master (and friends).

More info on autofs configuration can be found in RedHat's manual: https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Storage_Administration_Guide/s2-nfs-config-autofs.html

Answer 2

I had the same issue on a server, eventually figured out someone had placed a mount command at startup in root's crontab.