Technical data
ZFS and UNIX/POSIX Compliance Issues
ZFS is designed to be a POSIX compliant le system and in most situations, ZFS is POSIX
compliant. However, two edge case conditions exist when ZFS does not meet the POSIX
compliance tests:
1. Updating ZFS les system capacity statistics.
2. Modifying existing data with a 100 percent full le system.
Related CRs:
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6362314
■
6362156
■
6361650
■
6343113
■
6343039
fdisk -E Can Sweep Disk Used by ZFS Without
Warning (6412771)
If you use the fdisk -E command to modify a disk that is used by a ZFS storage pool, the pool
becomes unusable and might cause an I/O failure or system panic.
Workaround:
Do not use the fdisk command to modify a disk that is used by a ZFS storage pool. If you need
to access a disk that is used by a ZFS storage pool, use the format utility. In general, disks that
are in use by le systems should not be modied.
ZFS and Third-Party Backup Product Issues
The following are the issues with the Veritas NetBackup and Brightstor ARCserve Backup
products.
Veritas NetBackup Does Not Back Up and Preserve FilesWith
ZFS/NFSv4 ACLs (6352899)
The Veritas NetBackup product can be used to back up ZFS les, and this conguration is
supported. However, this product does not currently support backing up or restoring
NFSv4-style ACL information from ZFS les. Traditional permission bits and other le
attributes are correctly backed up and restored.
If a user tries to back up or restore ZFS les, the NFSv4-style ACL information from ZFS les is
silently dropped. There is no error message indicating that the ACL information from ZFS les
has been dropped.
File Systems
Solaris 10 5/08 Release Notes • April 200858