Date: Thu, 23 Jun 2016 10:09:40 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-fs@FreeBSD.org Subject: [Bug 194513] zfs recv hangs in state kmem arena Message-ID: <bug-194513-3630-dQ7wxvFOop@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-194513-3630@https.bugs.freebsd.org/bugzilla/> References: <bug-194513-3630@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D194513 --- Comment #17 from Twingly <shared+bugs.freebsd.org@twingly.com> --- We are also seeing this on our backup server 64 GB RAM 4x6TB (zpool with 2 mirrors) *no* SSD ZIL or L2Arc zfs send ... | ssh backupserver zfs receive zfs receive -u ... often hangs, and I have to reboot the server to get rid of the hang process= and to be able to receive datasets again no problem with 'zpool history', it runs fine $ uname -a FreeBSD hodor.live.lkp.primelabs.se 10.2-RELEASE-p18 FreeBSD 10.2-RELEASE-p= 18 #0: Sat May 28 08:53:43 UTC 2016=20=20=20=20 root@amd64-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC amd64 $ freebsd-version 10.2-RELEASE-p19 $ ps -l -U backup UID PID PPID CPU PRI NI VSZ RSS MWCHAN STAT TT TIME COMMAND 1006 59745 1 0 20 0 42248 3164 kmem are Ds - 0:03.81 zfs receive= -u storage/backup/mysql/leaf/data $ procstat 59745 PID PPID PGID SID TSID THR LOGIN WCHAN EMUL COMM 59745 1 59745 59745 0 1 backup kmem are FreeBSD ELF64 zfs $ sudo procstat -kk 59745 Password: PID TID COMM TDNAME KSTACK 59745 100809 zfs - mi_switch+0xe1 sleepq_wait+0= x3a _cv_wait+0x16d vmem_xalloc+0x568 vmem_alloc+0x3d kmem_malloc+0x33 uma_large_malloc+0x49 malloc+0x43 dmu_recv_stream+0x114 zfs_ioc_recv+0x955 zfsdev_ioctl+0x5ca devfs_ioctl_f+0x139 kern_ioctl+0x255 sys_ioctl+0x140 amd64_syscall+0x357 Xfast_syscall+0xfb $ sysctl -h hw.physmem vm.kmem_size vm.kmem_size_max hw.physmem: 68,578,963,456 vm.kmem_size: 66,774,925,312 vm.kmem_size_max: 1,319,413,950,874 I will look into raising vm.kmem_size, but right now I have to reboot hand hopefully get some backups going... --=20 You are receiving this mail because: You are the assignee for the bug.=
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