Mailinglist Archive: opensuse-factory (188 mails)

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Re: [opensuse-factory] Kernel 4.19 causing ext4 corruption
On Tuesday, December 4, 2018 9:17:41 PM CST, Larry Finger wrote: ...

This corruption issue seems to be caused by blk-mq mode (which doesn't seem to be enabled by default). It is also not limited to ext4. There have been reports of it happening on other file systems also.
You can check if you have it enabled by doing the following:

Checking if a drive is using the multi-queue I/O code can be done by checking
for the presence of the /sys/block/DEVICE/mq directory.

More info: https://www.phoronix.com/scan.php?page=news_item&px=Linux-4.19-EXT4-Issue-Likely-MQ

Bug report: https://bugzilla.kernel.org/show_bug.cgi?id=201685

Fix for this bug: https://bugzilla.kernel.org/show_bug.cgi?id=201685#c255
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