Date: Tue, 26 Jan 2010 13:06:07 +0100 From: Kai Gallasch <gallasch@free.de> To: freebsd-fs@freebsd.org Subject: zfs problem with processes stuck in state zfs and zilog- Message-ID: <20100126130607.3204351d@orwell.free.de>
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Hi. Some mail services (qmail, dovecot) on one of my freebsd jails became unavailable. The jail is using zfs as a filesystem. After logging in I found that I could not kill processes related to the unavailable services running inside the jail and that the jail could not be restartet. top revealed the following: PID USERNAME THR PRI NICE SIZE RES STATE C TIME WCPU COMMAND 8320 root 1 44 0 4772K 1088K zilog- 1 0:58 0.00% multilog 8336 qmaill 1 44 0 4772K 1088K zilog- 6 0:21 0.00% multilog 8464 mysql 2 44 0 108M 70356K STOP 7 0:21 0.00% mysqld 8292 spamd 1 44 0 4772K 1088K zilog- 7 0:18 0.00% multilog 8295 nobody 1 44 0 4772K 1088K zilog- 2 0:10 0.00% multilog 8298 qmaill 1 44 0 4772K 1088K zilog- 3 0:01 0.00% multilog 8294 root 1 44 0 4772K 1088K zilog- 4 0:01 0.00% multilog 8304 qmaill 1 44 0 4772K 1088K zilog- 1 0:01 0.00% multilog 34278 www 1 63 0 29852K 14828K zfs 4 0:00 0.00% perl 34368 www 1 76 0 29852K 14828K zfs 4 0:00 0.00% perl 8319 root 1 44 0 4772K 1088K zilog- 2 0:00 0.00% multilog 4311 qmaild 1 59 0 2792K 1040K zilog- 1 0:00 0.00% qmail-queue 32203 qmaild 1 60 0 2792K 1040K zilog- 0 0:00 0.00% qmail-queue 16225 qmaild 1 59 0 2792K 1040K zilog- 4 0:00 0.00% qmail-queue 32254 qmaild 1 60 0 2792K 1040K zilog- 0 0:00 0.00% qmail-queue 16545 qmaild 1 57 0 2792K 1040K zilog- 4 0:00 0.00% qmail-queue 4521 qmaild 1 56 0 2792K 1040K zilog- 5 0:00 0.00% qmail-queue 8327 root 1 44 0 4772K 1088K zilog- 6 0:00 0.00% multilog 36733 qmaild 1 52 0 2792K 1040K zilog- 4 0:00 0.00% qmail-queue 47903 root 1 44 0 10284K 3412K pause 0 0:00 0.00% tcsh 35517 qmaild 1 63 0 2792K 1040K zilog- 4 0:00 0.00% qmail-queue 35492 qmaild 1 63 0 2792K 1040K zilog- 0 0:00 0.00% qmail-queue 62826 qmaild 1 53 0 2792K 1040K zilog- 4 0:00 0.00% qmail-queue 69033 qmaild 1 53 0 2792K 1040K zilog- 0 0:00 0.00% qmail-queue 66010 qmaild 1 50 0 2792K 1040K zilog- 4 0:00 0.00% qmail-queue 40947 qmaild 1 50 0 2792K 1040K zilog- 0 0:00 0.00% qmail-queue 27726 qmaild 1 51 0 2792K 1040K zilog- 0 0:00 0.00% qmail-queue 35520 qmaild 1 53 0 2792K 1040K zilog- 6 0:00 0.00% qmail-queue 30639 root 1 44 0 12164K 3420K zfs 1 0:00 0.00% perl 23538 root 1 44 0 12164K 3420K zfs 1 0:00 0.00% perl 4834 root 1 76 0 12164K 3420K zfs 1 0:00 0.00% perl 26410 root 1 47 0 12164K 3420K zfs 0 0:00 0.00% perl 97136 root 1 76 0 12164K 3420K zfs 4 0:00 0.00% perl 9290 root 1 44 0 12164K 3420K zfs 1 0:00 0.00% perl 18127 root 1 44 0 12164K 3420K zfs 5 0:00 0.00% perl 12553 root 1 44 0 12164K 3420K zfs 4 0:00 0.00% perl 21574 root 1 44 0 12164K 3420K zfs 4 0:00 0.00% perl 2323 root 1 44 0 12164K 3420K zfs 0 0:00 0.00% perl 68707 root 1 45 0 12164K 3420K zfs 2 0:00 0.00% perl 9294 root 1 44 0 12164K 3420K zfs 1 0:00 0.00% perl 40393 root 1 44 0 12164K 3420K zfs 1 0:00 0.00% perl 41985 root 1 44 0 12164K 3420K zfs 0 0:00 0.00% perl 21672 root 1 44 0 12164K 3420K zfs 0 0:00 0.00% perl 10420 root 1 44 0 12164K 3420K zfs 4 0:00 0.00% perl 6965 root 1 44 0 12164K 3420K zfs 6 0:00 0.00% perl 14132 root 1 44 0 12164K 3420K zfs 1 0:00 0.00% perl 14867 root 1 44 0 12164K 3420K zfs 4 0:00 0.00% perl 77145 root 1 44 0 12164K 3420K zfs 4 0:00 0.00% perl 16534 root 1 44 0 12164K 3420K zfs 0 0:00 0.00% perl 25130 root 1 44 0 12164K 3420K zfs 0 0:00 0.00% perl 63026 root 1 44 0 12164K 3420K zfs 4 0:00 0.00% perl 44663 root 1 44 0 12164K 3420K zfs 4 0:00 0.00% perl 28139 root 1 44 0 12164K 3420K zfs 0 0:00 0.00% perl 34440 root 1 44 0 12164K 3420K zfs 4 0:00 0.00% perl 35619 qmaild 1 46 0 2792K 1040K zilog- 0 0:00 0.00% qmail-queue 26146 root 1 44 0 12164K 3420K zfs 0 0:00 0.00% perl Because the server is in active use, there was no time for me to look into this further - and no trace of the problem in syslog. Any suggestions how to debug this problem and find out what's wrong here? Does the state zilog- give any hint? BTW: FreeBSD 8.0-STABLE-amd64 / zpool version 13 --Kai -- You had mail, but the super-user read it, laughed and deleted it!
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