c/mirror_zfs
1
0
Fork 0
mirror of https://git.proxmox.com/git/mirror_zfs.git synced 2026-05-22 18:40:43 +03:00
Code Issues Packages Projects Releases Wiki Activity

Handle zap_add() failures in mixed case mode

Browse Source 
With "casesensitivity=mixed", zap_add() could fail when the number of
files/directories with the same name (varying in case) exceed the
capacity of the leaf node of a Fatzap. This results in a ASSERT()
failure as zfs_link_create() does not expect zap_add() to fail. The fix
is to handle these failures and rollback the transactions.

Reviewed by: Matt Ahrens <mahrens@delphix.com>
Reviewed-by: Chunwei Chen <david.chen@nutanix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Sanjeev Bagewadi <sanjeev.bagewadi@gmail.com>
Closes #7011
Closes #7054
This commit is contained in:
sanjeevbagewadi
2018-02-09 23:45:53 +05:30
committed by Tony Hutter
parent 478754a8f5
commit b3da003ebf
9 changed files with 289 additions and 32 deletions
Download Patch File Download Diff File Expand all files Collapse all files
include/sys/zap_leaf.h
+11 -4
View File
@@ -46,10 +46,15 @@ struct zap_stats;
* block size (1<<l->l_bs) - hash entry size (2) * number of hash
* entries - header space (2*chunksize)
*/
#define ZAP_LEAF_NUMCHUNKS(l) \
(((1<<(l)->l_bs) - 2*ZAP_LEAF_HASH_NUMENTRIES(l)) / \
#define ZAP_LEAF_NUMCHUNKS_BS(bs) \
(((1<<(bs)) - 2*ZAP_LEAF_HASH_NUMENTRIES_BS(bs)) / \
ZAP_LEAF_CHUNKSIZE - 2)
#define ZAP_LEAF_NUMCHUNKS(l) (ZAP_LEAF_NUMCHUNKS_BS(((l)->l_bs)))
#define ZAP_LEAF_NUMCHUNKS_DEF \
(ZAP_LEAF_NUMCHUNKS_BS(fzap_default_block_shift))
/*
* The amount of space within the chunk available for the array is:
* chunk size - space for type (1) - space for next pointer (2)
@@ -74,8 +79,10 @@ struct zap_stats;
* which is less than block size / CHUNKSIZE (24) / minimum number of
* chunks per entry (3).
*/
#define ZAP_LEAF_HASH_SHIFT(l) ((l)->l_bs - 5)
#define ZAP_LEAF_HASH_NUMENTRIES(l) (1 << ZAP_LEAF_HASH_SHIFT(l))
#define ZAP_LEAF_HASH_SHIFT_BS(bs) ((bs) - 5)
#define ZAP_LEAF_HASH_NUMENTRIES_BS(bs) (1 << ZAP_LEAF_HASH_SHIFT_BS(bs))
#define ZAP_LEAF_HASH_SHIFT(l) (ZAP_LEAF_HASH_SHIFT_BS(((l)->l_bs)))
#define ZAP_LEAF_HASH_NUMENTRIES(l) (ZAP_LEAF_HASH_NUMENTRIES_BS(((l)->l_bs)))
/*
* The chunks start immediately after the hash table. The end of the