search

openwrt / packages

Community maintained packages for OpenWrt. Documentation for submitting pull requests is in CONTRIBUTING.md
GNU General Public License v2.0
3.94k stars 3.45k forks source link

postfix: fatal: statfs /overlay: No such file or directory #8024

Open aquaforum opened 5 years ago

aquaforum commented 5 years ago

Hello ! postfix do not accept e-mails I checked it on these devices: Paspberry Pi 3 B+ and Nexx WT3020 (8M) Package version: ostfix_3.3.2-3_aarch64_cortex-a53.ipk for pi and postfix_3.3.2-3_mips_24kc.ipk for WT3020 When I try to send him a letter he says in a log: Wed Jan 23 19:19:52 2019 mail.info postfix/smtpd[3142]: connect from unknown[192.168.5.10] Wed Jan 23 19:19:53 2019 mail.crit postfix/smtpd[3142]: fatal: statfs /overlay: No such file or directory Wed Jan 23 19:19:54 2019 mail.warn postfix/master[3138]: warning: process /usr/libexec/postfix/smtpd pid 3142 exit status 1 Wed Jan 23 19:19:54 2019 mail.warn postfix/master[3138]: warning: /usr/libexec/postfix/smtpd: bad command startup -- throttling

I looked at the postfix source, in my opinion the error arises in the file /src/utils/fsspace.c in the function void fsspace (const char path, struct fsspace sp) line 76 (or 83, I do not know what vatian is used ) , the call to the statfs() ends with a value of <0 maybe in openwrt broken statfs() call ? thanks

jow- commented 5 years ago

maybe in openwrt broken statfs() call ?

Wouldn't it be more likely that there simply is no /overlay on your system? If so, a simple mkdir /overlay should work around the problem at least.

aquaforum commented 5 years ago

he exists, is located on usb stick

df -hT

Filesystem Type Size Used Available Use% Mounted on /dev/root squashfs 5.3M 5.3M 0 100% /rom tmpfs tmpfs 29.5M 96.0K 29.4M 0% /tmp /dev/sda f2fs 28.9G 224.8M 28.0G 1% /overlay overlayfs:/overlay overlay 28.9G 224.8M 28.0G 1% / tmpfs tmpfs 512.0K 0 512.0K 0% /dev I tried different media, different file systems - the result did not change.

aquaforum commented 5 years ago

I also checked different versions - 18.06.1 and development build - the error is in both.

aquaforum commented 5 years ago

I made him work. a very rough patch, disables checking the free space in general, but with it, postfix works

101-statfs.zip

aquaforum commented 5 years ago

I found the cause of this error, it is contained in this patch of the kit openwrt 100-fsstat.patch - fsspace(".", &fsbuf); + fsspace("/overlay", &fsbuf); but the postfix processes work in the chroot and do not have access to the /overlay 2 jow- you are almost right, command mkdir /usr/var/spool/postfix/overlay/ solved the problem

Shulyaka commented 5 years ago

Hi @aquaforum, Thank you for the issue and sorry for noticing it so late. The reason behind the 100-fsstat.patch is that otherwise pastfix had exactly the same error - fsspace(".", &fsbuf) returning a value < 0. I don't know why (a kernel bug, probably?). But I never tested it with processes in chroot. I think I will try to remove the patch and probably find a different workaround if it is still needed.

aquaforum commented 5 years ago

Thanks, I'm sure to check the changes