Package: collectd
Version: 4.10.1-1+squeeze2
Severity: serious
collectd is hanging in an endless loop (consuming CPU time) if
/var/lib/collectd/rrd is a symlink, pointing to a mountpoint that's
not available:
# strace -f -p $PID_OF_COLLECTD
[...]
[pid 1033] mkdir("/var/lib/collectd/rrd", 0755) = -1 EEXIST (File exists)
[pid 1033] stat("/var/lib/collectd/rrd", 0x7f7f08f28440) = -1 ENOENT (No such
file or directory)
[pid 1033] mkdir("/var/lib/collectd/rrd", 0755) = -1 EEXIST (File exists)
[pid 1033] stat("/var/lib/collectd/rrd", 0x7f7f08f28440) = -1 ENOENT (No such
file or directory)
[pid 1033] mkdir("/var/lib/collectd/rrd", 0755) = -1 EEXIST (File exists)
[pid 1033] stat("/var/lib/collectd/rrd", 0x7f7f08f28440) = -1 ENOENT (No such
file or directory)
[pid 1033] mkdir("/var/lib/collectd/rrd", 0755) = -1 EEXIST (File exists)
[pid 1033] stat("/var/lib/collectd/rrd", 0x7f7f08f28440) = -1 ENOENT (No such
file or directory)
[pid 1033] mkdir("/var/lib/collectd/rrd", 0755) = -1 EEXIST (File exists)
[pid 1033] stat("/var/lib/collectd/rrd", 0x7f7f08f28440) = -1 ENOENT (No such
file or directory)
[pid 1033] mkdir("/var/lib/collectd/rrd", 0755) = -1 EEXIST (File exists)
[...]
# ls -la /var/lib/collectd/rrd
lrwxrwxrwx 1 root root 18 Mar 16 14:12 /var/lib/collectd/rrd ->
/mnt/glusterfs/rrd
/mnt/glusterfs isn't available in this situation because the
underlying glusterfs share isn't available.
The directory check in check_create_dir() needs an additional check
for symlinks.
regards,
-mika-
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