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Brian Behlendorf
65ca2c1eb9
The dmu_objset_remap_indirects_impl() logic depends on dnode_hold() returning ENOENT for dnodes which will be freed and should be skipped. This behavior can only be relied upon when taking a new hold and while the caller has an open transaction. This ensures that the open txg cannot advance and that a concurrent free will end up in the same txg (which is critical). Relying on an existing hold will not prevent dnode_free() from succeeding. The solution is to take an additional dnode_hold() after assigning the transaction. This ensures the remap will never dirty the dnode if it was freed while we were waiting in dmu_tx_assign(, TXG_WAIT). Randomly set zfs_object_remap_one_indirect_delay_ms in ztest. This increases the likelihood of an operation racing with the remap. Converted from ticks to milliseconds. Reviewed by: Matt Ahrens <mahrens@delphix.com> Reviewed by: Tom Caputi <tcaputi@datto.com> Reviewed by: Igor Kozhukhov <igor@dilos.org> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #8215
ZFS on Linux is an advanced file system and volume manager which was originally developed for Solaris and is now maintained by the OpenZFS community.
Official Resources
Installation
Full documentation for installing ZoL on your favorite Linux distribution can be found at our site.
Contribute & Develop
We have a separate document with contribution guidelines.
Release
ZFS on Linux is released under a CDDL license.
For more details see the NOTICE, LICENSE and COPYRIGHT files; UCRL-CODE-235197
Supported Kernels
- The
METAfile contains the officially recognized supported kernel versions.