Lev Serebryakov
2013-Jan-31 08:44 UTC
9.1-STABLE, live lock up, seems that it is ZFS lockup in "zfskern{txg_thread_enter}" state "tx->tx"
Hello, freebsd-fs.
I have 9.1-STABLE (r244958) system, amd64, 8GiB memory.
Two SATA disks, 750Gb each.
Disks are partitoned into 7 (BSD) partitons (exactly the same), 5 of
these pairs are joined into gmirrors for "system" FSes (UFS2), one
pair is used for swaps and 7th pair is used as zmirror for /usr/home.
Tonight system becomes unusable, as every process which try to read
directories in /usr/home (like "ls ~" or "find /usr/home -type
f")
hangs forever. I could login to system, login shell starts, but if I
run "ls" right after -- it hangs. Every periodic process, which try
to read home FS (directories, not files!) hangs. It looks, like
stat() calls on this FS hangs, but not open()/read()/write()/close().
One thing I fins suspicious in different system diagnostics, is
kernel thread "zfskern{txg_thread_enter}" which is shown in state
"tx->tx" forever.
Disks looks completely OK according to smartd/smartctl, no hardware
errors in dmesg, etc.
==============================================# zpool status
pool: pool
state: ONLINE
status: The pool is formatted using a legacy on-disk format. The pool can
still be used, but some features are unavailable.
action: Upgrade the pool using 'zpool upgrade'. Once this is done, the
pool will no longer be accessible on software that does not support
feature
flags.
scan: resilvered 32.1G in 0h34m with 0 errors on Sat Jun 2 16:22:59 2012
config:
NAME STATE READ WRITE CKSUM
pool ONLINE 0 0 0
mirror-0 ONLINE 0 0 0
ada0s1h ONLINE 0 0 0
ada1s1h ONLINE 0 0 0
errors: No known data errors
===============================================
--
// Black Lion AKA Lev Serebryakov <lev at FreeBSD.org>