mirror_zfs/man
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
..
man1 New service that waits on zvol links to be created 2019-07-17 15:33:05 -07:00
man5 spa_load_verify() may consume too much memory 2019-08-13 08:11:57 -06:00
man8 Introduce getting holds and listing bookmarks through ZCP 2019-08-12 10:02:34 -07:00
Makefile.am Prepare SPL repo to merge with ZFS repo 2018-05-29 14:51:39 -07:00