freebsd with flexible iflib nic queues
adf2e8778e
Due to an uninitialized variable files opened with O_APPEND may overwrite the start of the file rather than append to it. This was introduced accidentally when I removed the Solaris vnodes. The zfs_range_lock_writer() function used to key off zf->z_vnode to determine if a znode_t was for a zvol of zpl object. With the removal of vnodes this was replaced by the flag zp->z_is_zvol. This flag was used to control the append behavior for range locks. Unfortunately, this value was never properly initialized after the vnode removal. However, because most of memory is usually zeros it happened to be set correctly most of the time making the bug appear racy. Properly initializing zp->z_is_zvol to zero completely resolves the problem with O_APPEND. Closes #126 |
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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