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jbd2_log_wait_commit hangs

Question asked by yoav rubin on Dec 4, 2019
Latest reply on Dec 6, 2019 by Yiping Wang

powerpc linux 4.1.8-rt8 32bit p4080ds

After erasing and creating 15GB EXT4 fs (for nand flash), sync command occasionally hangs.
found out it hangs inside: jbd2_log_wait_commit().
I saw that many people encountered this problem and didn't find solution.
 
 
1. Is there any known fix for this hang?
2.  If not , is it safe to cancel journaling just for the ext4 fs and just for the sync during startup (rest of syncs will execute as usual)  
thanks

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