c/mirror_zfs
1
0
Fork 0
mirror of https://git.proxmox.com/git/mirror_zfs.git synced 2026-05-22 10:37:35 +03:00
Code Issues Packages Projects Releases Wiki Activity

Race condition between spa async threads and export

Browse Source 
In the past we've seen multiple race conditions that have
to do with open-context threads async threads and concurrent
calls to spa_export()/spa_destroy() (including the one
referenced in issue #9015).

This patch ensures that only one thread can execute the
main body of spa_export_common() at a time, with subsequent
threads returning with a new error code created just for
this situation, eliminating this way any race condition
bugs introduced by concurrent calls to this function.

Reviewed by: Matt Ahrens <matt@delphix.com>
Reviewed by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Serapheim Dimitropoulos <serapheim@delphix.com>
Closes #9015
Closes #9044
This commit is contained in:
Serapheim Dimitropoulos
2019-07-18 13:02:33 -07:00
committed by Tony Hutter
parent bbbe4b0a98
commit 1c4b0fc745
6 changed files with 42 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files
include/sys/fs/zfs.h
+1
View File
@@ -1318,6 +1318,7 @@ typedef enum {
ZFS_ERR_FROM_IVSET_GUID_MISSING,
ZFS_ERR_FROM_IVSET_GUID_MISMATCH,
ZFS_ERR_SPILL_BLOCK_FLAG_MISSING,
ZFS_ERR_EXPORT_IN_PROGRESS,
} zfs_errno_t;
/*