mirror_zfs/include
George Wilson c8242a96ba spa_load_verify() may consume too much memory
When a pool is imported it will scan the pool to verify the integrity 
of the data and metadata. The amount it scans will depend on the 
import flags provided. On systems with small amounts of memory or 
when importing a pool from the crash kernel, it's possible for 
spa_load_verify to issue too many I/Os that it consumes all the memory 
of the system resulting in an OOM message or a hang.

To prevent this, we limit the amount of memory that the initial pool
scan can consume. This change will, by default, use 1/16th of the ARC
for scan I/Os to prevent running the system out of memory during import.

Reviewed-by: Matt Ahrens <matt@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Serapheim Dimitropoulos <serapheim@delphix.com>
Signed-off-by: George Wilson george.wilson@delphix.com
External-issue: DLPX-65237
External-issue: DLPX-65238
Closes #9146
2019-08-13 08:11:57 -06:00
..
linux Fix CONFIG_X86_DEBUG_FPU build failure 2019-07-17 09:14:36 -07:00
spl Drop KMC_NOEMERGENCY 2019-08-13 07:46:12 -06:00
sys spa_load_verify() may consume too much memory 2019-08-13 08:11:57 -06:00
.gitignore Create /proc/sys/kernel/spl/gitrev with git hash 2018-10-08 21:57:02 -07:00
libnvpair.h Add JSON output support to channel programs 2018-03-19 12:40:58 -07:00
libuutil_common.h Support custom build directories and move includes 2010-09-08 12:38:56 -07:00
libuutil_impl.h Support custom build directories and move includes 2010-09-08 12:38:56 -07:00
libuutil.h Correct cppcheck errors 2017-09-19 12:17:29 -07:00
libzfs_core.h Remove code for zfs remap 2019-06-24 16:44:01 -07:00
libzfs_impl.h OpenZFS 8115 - parallel zfs mount 2018-11-15 11:33:58 -08:00
libzfs.h Race condition between spa async threads and export 2019-07-18 13:02:33 -07:00
libzutil.h Fix libudev dependency in libzutil 2018-11-06 17:47:52 -08:00
Makefile.am Add libzutil for libzfs or libzpool consumers 2018-11-05 11:22:33 -08:00
thread_pool.h Add libtpool (thread pools) 2017-08-09 15:31:08 -07:00
zfeature_common.h Fast Clone Deletion 2019-07-26 10:54:14 -07:00
zfs_comutil.h OpenZFS 9337 - zfs get all is slow due to uncached metadata 2018-07-12 10:49:27 -07:00
zfs_deleg.h Remove code for zfs remap 2019-06-24 16:44:01 -07:00
zfs_fletcher.h DLPX-44812 integrate EP-220 large memory scalability 2016-11-29 14:34:27 -08:00
zfs_namecheck.h Restrict filesystem creation if name referred either '.' or '..' 2019-06-13 08:56:15 -07:00
zfs_prop.h Add zfs module feature and property info to sysfs 2018-09-02 12:09:53 -07:00