Bug 139574
| Summary: | syslogd hangs on startup when /var is symlinked to non-root partition | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Kevin Cozens <kevin> |
| Component: | sysklogd | Assignee: | Jason Vas Dias <jvdias> |
| Status: | CLOSED NOTABUG | QA Contact: | Brian Brock <bbrock> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 3 | ||
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | i686 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2004-11-16 21:04:09 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
Firstly, make sure that the new /var partition (/part2) is
mounted at the same time as / in /etc/fstab - the sixth field
(pass_no) must be no greater than 2.
It sounds like you have SELinux enabled - syslogd has the incorrect
file contexts for /part2/var/{run,log} :
open("/var/run/syslogd.pid", O_RDONLY) = -1 EACCES (Permission denied)
This problem would disappear if you can mount the whole of /part2
under /var:
# cd /part2
# mv var/* .
# rmdir var
# cd /
# umount /part2
# mount /dev/hda4 /var
and then relabel to get the correct selinux file contexts:
# restorecon -R /var
OR you could try doing the above, with the restorecon,
and then move all the relabeled directories back to /part2/var,
and then the link from /var to /part2/var MIGHT work - you
may have to add policy for /var for syslogd & klogd.
OR you could disable selinux:
edit /etc/selinux/config and set SELINUX=disabled
See documents in /usr/share/SELinux .
I now have some updated information - you need to use 'setfiles'
instead of restorecon :
You can retain use of the /part2/var directory as follows:
Having moved / untar'ed the /var directory under /part2 :
# setfiles -r /part2 \
/etc/selinux/targeted/contexts/files/file_contexts /var
# rm -f /var
# mkdir /var
# mount -o bind /part2 /var
and add this line to /etc/fstab:
/part2/var /var none bind 0 2
I'll try some of the suggestions. I generally run my machine with high security as a way to test setups for client machines. The seinfo command says there is no policy.conf file so I will disable selinux for now until I can create a policy file for the machine. FYI, I selected to enable SELinux during the install of FC3. I did not change the default configuration of SELinux after install. /etc/selinux/config indicates 'enforcing' and 'targeted'. 'enforcing' may be why syslogd hung without providing any indication it was running in to a problem with an SELinux policy. I will try it with 'permissive' to see if that gives me an error message instead of just having the daemon hang. |
From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.5) Gecko/20041111 Firefox/1.0 Description of problem: To save a little space in my 4G root partition (/dev/hda2) I created a /var directory under /part2 (/dev/hda4). In single user mode I used tar to copy all of /var to /part2/var preserving file ownerships and permissions. I then created a symlink from /var to /part2/var. When the remainder of the boot process got as far as starting syslogd, the machine hung. Version-Release number of selected component (if applicable): sysklogd-1.4.1-22 How reproducible: Always Additional info: I can reproduce the problem without rebooting my machine. I shutdown syslogd. Put the symlink in place and restarted syslogd (/sbin/syslogd -m 0) and it hangs. The following output is from strace when starting syslogd. execve("/sbin/syslogd", ["syslogd", "-m", "0"], [/* 20 vars */]) = 0 uname({sys="Linux", node="pc.ve3syb.on.ca", ...}) = 0 brk(0) = 0xf85d5000 access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory) open("/etc/ld.so.cache", O_RDONLY) = 3 fstat64(3, {st_mode=S_IFREG|0644, st_size=78233, ...}) = 0 old_mmap(NULL, 78233, PROT_READ, MAP_PRIVATE, 3, 0) = 0xf6fce000 close(3) = 0 open("/lib/tls/libc.so.6", O_RDONLY) = 3 read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0 /C\000"..., 512) = 512 fstat64(3, {st_mode=S_IFREG|0755, st_size=1512400, ...}) = 0 old_mmap(NULL, 1207532, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xf6ea7000 old_mmap(0xf6fc8000, 16384, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x120000) = 0xf6fc8000 old_mmap(0xf6fcc000, 7404, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xf6fcc000 close(3) = 0 old_mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xf6ea6000 mprotect(0xf6fc8000, 8192, PROT_READ) = 0 mprotect(0xf6ff7000, 4096, PROT_READ) = 0 set_thread_area({entry_number:-1 -> 6, base_addr:0xf6ea68e0, limit:1048575, seg_32bit:1, contents:0, read_exec_only:0, limit_in_pages:1, seg_not_present:0, useable:1}) = 0 munmap(0xf6fce000, 78233) = 0 getpid() = 27831 chdir("/") = 0 brk(0) = 0xf85d5000 brk(0xf85f6000) = 0xf85f6000 open("/var/run/syslogd.pid", O_RDONLY) = -1 EACCES (Permission denied) rt_sigaction(SIGTERM, {0xf6ffb104, [TERM], SA_RESTORER|SA_RESTART, 0xf6ecea48}, {SIG_DFL}, 8) = 0 clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0xf6ea6928) = 27832 rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0 rt_sigaction(SIGCHLD, NULL, {SIG_DFL}, 8) = 0 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 --- SIGCHLD (Child exited) @ 0 (0) --- nanosleep({300, 0}, There was no syslogd.pid file before starting syslogd.