Re: ACFS filesystem hangs

Posted by ErmanArslansOracleBlog on Jun 02, 2023; 8:00am
URL: http://erman-arslan-s-oracle-forum.124.s1.nabble.com/ACFS-filesystem-hangs-tp11936p11940.html

Check the following MOS Note :
It suits your case (not %100 maybe cause it is for formatting the fs.., but waits are looking similar.. D state, Conenction timed outs and stuff like that.. And solution may be applicable) Just check it carefully..

Create a file system with ACFS hang at mkfs -t acfs (Doc ID 2331497.1)

your mount process waits/hangs in D state..
so, it is uninterruptable.. Probably related with I/O

That log may be in somewhere else.. (it may change according to your version and env)
You can also use the "find" command to find them.. for instance ; cd / ; find . -name acfs*
Also strace says : trace files : /grid/base/diag/crs/t...... So check that directory as well..

"/grid/base/diag/crs/t24r18dbdev/crs/trace/mount_48167.trc"

Use the utils to get info about it;
acfsutil log: Retrieves memory diagnostic log files and manages debug settings.

Note that: strace, acfs.log, dmesg.. these are your friends for diagnosing it.

Strace findings:

48167 08:21:05.977112 openat(AT_FDCWD, "/dev/asm/interface01-433", O_RDWR|O_SYNC <unfinished ...>
48170 08:21:05.999392 <... futex resumed>) = -1 ETIMEDOUT (Connection timed out)


48169 08:21:06.307714 futex(0x1795a80, FUTEX_WAKE_PRIVATE, 1) = 0
48169 08:21:06.307815 futex(0x17a615c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=24999675} <unfinished ...>
48170 08:21:06.329436 <... futex resumed>) = -1 ETIMEDOUT (Connection timed out)