4db77a74a6
The following warning was observed under normal operation. It's not fatal but it's something to be addressed long term. Flag the offending allocation with KM_NODEBUG to suppress the warning and flag the call site. SPL: Showing stack for process 21761 Pid: 21761, comm: iozone Tainted: P ---------------- 2.6.32-71.14.1.el6.x86_64 #1 Call Trace: [<ffffffffa05465a7>] spl_debug_dumpstack+0x27/0x40 [spl] [<ffffffffa054a84d>] kmem_alloc_debug+0x11d/0x130 [spl] [<ffffffffa05de166>] dmu_buf_hold_array_by_dnode+0xa6/0x4e0 [zfs] [<ffffffffa05de825>] dmu_buf_hold_array+0x65/0x90 [zfs] [<ffffffffa05de891>] dmu_read_uio+0x41/0xd0 [zfs] [<ffffffffa0654827>] zfs_read+0x147/0x470 [zfs] [<ffffffffa06644a2>] zpl_read_common+0x52/0x70 [zfs] [<ffffffffa0664503>] zpl_read+0x43/0x70 [zfs] [<ffffffff8116d905>] vfs_read+0xb5/0x1a0 [<ffffffff8116da41>] sys_read+0x51/0x90 [<ffffffff81013172>] system_call_fastpath+0x16/0x1b
Native ZFS for Linux! ZFS is an advanced file system and volume manager which was originally developed for Solaris. It has been successfully ported to FreeBSD and now there is a functional Linux ZFS kernel port too. The port currently includes a fully functional and stable SPA, DMU, and ZVOL with a ZFS Posix Layer (ZPL) on the way!
$ ./configure
$ make pkg
Full documentation for building, configuring, and using ZFS can be found at: http://zfsonlinux.org