zfs/module
Matthew Ahrens 0156253d29 ztest fails assertion in zio_write_gang_member_ready()
Encrypted blocks can have up to 2 DVA's, as the third DVA is reserved
for the salt+IV.  However, dmu_write_policy() allows non-encrypted
blocks (e.g. DMU_OT_OBJSET) inside encrypted datasets to request and
allocate 3 DVA's, since they don't need a salt+IV (they are merely
authenicated).

However, if such a block becomes a gang block, the gang code incorrectly
limits the gang block header to 2 DVA's.  This leads to a "NDVAs
inversion", where a parent block (the gang block header) has less DVA's
than its children (the gang members), causing an assertion failure in
zio_write_gang_member_ready().

This commit addresses the problem by only restricting the gang block
header to 2 DVA's if the block is actually encrypted (and thus its gang
block members can have at most 2 DVA's).

Reviewed-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Matthew Ahrens <mahrens@delphix.com>
Closes #14250
Closes #14356
2023-01-10 08:44:55 -08:00
..
avl AVL: Remove obsolete branching optimizations 2022-07-26 10:10:37 -07:00
icp Fix possible NULL pointer dereference in sha2_mac_init() 2022-12-01 12:39:42 -08:00
lua Lua: Fix bad bitshift in lua_strx2number() 2022-12-01 12:39:44 -08:00
nvpair Update `checkstyle` workflow env to ubuntu-20.04 2021-12-08 13:27:56 -08:00
os linux 6.2 compat: get_acl() got moved to get_inode_acl() in 6.2 2023-01-10 08:43:49 -08:00
spl Cleanup linux module kbuild files 2020-06-10 09:24:15 -07:00
unicode Update `checkstyle` workflow env to ubuntu-20.04 2021-12-08 13:27:56 -08:00
zcommon dsl_prop_known_index(): check for invalid prop 2022-11-08 10:16:21 -08:00
zfs ztest fails assertion in zio_write_gang_member_ready() 2023-01-10 08:44:55 -08:00
zstd module: zstd: check we don't leak symbols; regenerate symbol map 2022-05-16 15:48:21 -07:00
.gitignore FreeBSD: Ignore symlink to i386 includes 2022-09-28 10:35:13 -07:00
Kbuild.in Add zstd support to zfs 2020-08-20 10:30:06 -07:00
Makefile.bsd FreeBSD: Silence clang unused-but-set-variable 2022-06-15 11:27:28 -07:00
Makefile.in Add support for $KERNEL_{CC,LD,LLVM} variables 2022-02-16 17:58:55 -08:00