c/mirror_zfs
1
0
Fork 0
mirror of https://git.proxmox.com/git/mirror_zfs.git synced 2026-05-24 03:08:51 +03:00
Code Issues Packages Projects Releases Wiki Activity

Fix handling of maxblkid for raw sends

Browse Source 
Currently, the receive code can create an unreadable dataset from
a correct raw send stream. This is because it is currently
impossible to set maxblkid to a lower value without freeing the
associated object. This means truncating files on the send side
to a non-0 size could result in corruption. This patch solves this
issue by adding a new 'force' flag to dnode_new_blkid() which will
allow the raw receive code to force the DMU to accept the provided
maxblkid even if it is a lower value than the existing one.

For testing purposes the send_encrypted_files.ksh test has been
extended to include a variety of truncated files and multiple
snapshots. It also now leverages the xattrtest command to help
ensure raw receives correctly handle xattrs.

Reviewed-by: Paul Dagnelie <pcd@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Matt Ahrens <mahrens@delphix.com>
Signed-off-by: Tom Caputi <tcaputi@datto.com>
Closes #8168 
Closes #8487
This commit is contained in:
Tom Caputi
2019-03-13 13:52:01 -04:00
committed by Brian Behlendorf
parent 146bdc414c
commit 369aa501d1
10 changed files with 156 additions and 55 deletions
Download Patch File Download Diff File Expand all files Collapse all files
include/sys/dmu.h
+2 -1
View File
@@ -477,7 +477,8 @@ int dmu_object_set_blocksize(objset_t *os, uint64_t object, uint64_t size,
/*
* Manually set the maxblkid on a dnode. This will adjust nlevels accordingly
* to accommodate the change.
* to accommodate the change. When calling this function, the caller must
* ensure that the object's nlevels can sufficiently support the new maxblkid.
*/
int dmu_object_set_maxblkid(objset_t *os, uint64_t object, uint64_t maxblkid,
dmu_tx_t *tx);