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9c4b6dbb31
A common usage pattern for zgenhostid, including in the ZFS dracut module, is running it as: zgenhostid $(hostid) However, zgenhostid only accepted hostid arguments greater than 0, which meant that, when the output of hostid(1) was "00000000", zgenhostid would error out, even though 0 is a possible return value for the gethostid(3) function used by hostid(1): - On current musl libc, gethostid(3) is a stub that always returns 0. - On glibc, gethostid(3) will return 0 if /etc/hostid exists but is smaller than 4 bytes. In these cases, it makes more sense for zgenhostid to treat a value of 0 as other parts of the zfs codebase do, meaning that a hostid value couldn't be determined; therefore, it should attempt to generate a random value to write into /etc/hostid. The manpage and usage output have been updated to reflect this. Whitespace has also been fixed in the usage output. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Georgy Yakovlev <gyakovlev@gentoo.org> Reviewed-by: Andrew J. Hesford <ajh@sideband.org> Signed-off-by: Érico Rolim <erico.erc@gmail.com> Closes #11174 Closes #11189 |
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| .. | ||
| arc_summary | ||
| arcstat | ||
| dbufstat | ||
| fsck_zfs | ||
| mount_zfs | ||
| raidz_test | ||
| vdev_id | ||
| zdb | ||
| zed | ||
| zfs | ||
| zfs_ids_to_path | ||
| zgenhostid | ||
| zhack | ||
| zinject | ||
| zpool | ||
| zpool_influxdb | ||
| zstream | ||
| zstreamdump | ||
| ztest | ||
| zvol_id | ||
| zvol_wait | ||
| Makefile.am | ||