Maxim Sobolev
afe1dec742
Check that once fsync(2), fdatasync(2), or a write(2) with O_SYNC or O_DSYNC returns, the new data, the file size and every block pointer leading to the data are on disk. The cases append a block, fill a hole, append the first block that needs an indirect block and append below an existing indirect block. Two more append after another write left a new direct block unsynced, which with soft updates cuts the size and the later pointers of an inode written meanwhile. With O_SYNC and O_DSYNC on soft updates, those also check that the open already made the unsynced block durable. Each case runs on UFS without soft updates, with soft updates and with SU+J. The file systems live on md(4) and the checks read the inode, the indirect block and the data block straight from the device with libufs right after the synchronous call returns. There is no cache in front of the disk device, so this shows what would survive a crash at that moment without having to crash anything. Sponsored by: Sippy Software, Inc. Reviewed by: pho Tested by: pho Differential Revision: https://reviews.freebsd.org/D60134 MFC after: 1 month
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| Directory | Description |
|---|---|
| bin | System/user commands. |
| cddl | Source code for third-party software under the Common Development and Distribution License. |
| contrib | Source code for third-party software. |
| crypto | Source code for cryptographic libraries and commands (see crypto/README). |
| etc | Template files for /etc. |
| include | System include files. |
| kerberos5 | Build system for Kerberos 5 (Heimdal). |
| krb5 | Build system for Kerberos 5 (MIT). |
| lib | System libraries. |
| libexec | System commands intended to be executed by other commands or daemons. |
| packages | Base system packages. |
| release | Makefiles and scripts used for building releases and VM images. |
| rescue | Build system for statically linked /rescue commands. |
| sbin | System commands. |
| secure | Build system for cryptographic libraries and commands (excluding Kerberos). |
| share | Shared resources. |
| stand | Boot loader sources. |
| sys | Kernel sources (see sys/README.md). |
| targets | Support for experimental DIRDEPS_BUILD |
| tests | Tests which can be run by Kyua. See tests/README for additional information. |
| tools | Ancillary utilities and tests (not included in the build). |
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