e06be58641
This commit fixes a sign extension bug affecting l2arc devices. Extremely large offsets may be passed down to the low level block device driver on reads, generating errors similar to attempt to access beyond end of device sdbi1: rw=14, want=36028797014862705, limit=125026959 The unwanted sign extension occurrs because the function arc_read_nolock() stores the offset as a daddr_t, a 32-bit signed int type in the Linux kernel. This offset is then passed to zio_read_phys() as a uint64_t argument, causing sign extension for values of 0x80000000 or greater. To avoid this, we store the offset in a uint64_t. This change also changes a few daddr_t struct members to uint64_t in the libspl headers to avoid similar bugs cropping up in the future. We also add an ASSERT to __vdev_disk_physio() to check for invalid offsets. Closes #66 Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> |
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Makefile.in | ||
OPENSOLARIS.LICENSE | ||
README.markdown | ||
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configure | ||
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zfs-modules.spec.in | ||
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zfs_config.h.in |
README.markdown
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