Messages in this thread | | | From | Rui Salvaterra <> | Date | Thu, 25 Oct 2018 17:09:32 +0100 | Subject | Bug: swap discard issue with zram caused by "block: don't deal with discard limit in blkdev_issue_discard()" |
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Hi,
After commit 744889b7cbb56a64f957e65ade7cb65fe3f35714, I started getting this (-EIO, it seems) on my dmesg:
swapon: discard_swap(00000000c275f02d): -5
This is an 8 GB zram swap device. It's configured like this:
modprobe zram echo zstd > /sys/block/zram0/comp_algorithm echo 8297508864 > /sys/block/zram0/disksize mkswap /dev/zram0 swapon -d -p 100 /dev/zram0
I should note that if I use --discard=pages instead of -d (both policies) at swapon, I don't get this error. Reverting the commit from v4.19 final fixes the error for me, but surely breaks something else. :) Let me know if you need any additional information.
Thanks,
Rui
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