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| author | Christian Krinitsin <mail@krinitsin.com> | 2025-06-30 12:24:58 +0000 |
|---|---|---|
| committer | Christian Krinitsin <mail@krinitsin.com> | 2025-06-30 12:27:06 +0000 |
| commit | 33606b41d35115f887ea688b1a16f2ff85bf2fe4 (patch) | |
| tree | 406b2c7b19a087ba437c68f3dbf0b589fa1d6150 /results/scraper/launchpad-without-comments/1884831 | |
| parent | adedf8771bc4de3113041ca21bd4d0d1c0014b6a (diff) | |
| download | emulator-bug-study-33606b41d35115f887ea688b1a16f2ff85bf2fe4.tar.gz emulator-bug-study-33606b41d35115f887ea688b1a16f2ff85bf2fe4.zip | |
add launchpad bug reports without comments
Diffstat (limited to 'results/scraper/launchpad-without-comments/1884831')
| -rw-r--r-- | results/scraper/launchpad-without-comments/1884831 | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/results/scraper/launchpad-without-comments/1884831 b/results/scraper/launchpad-without-comments/1884831 new file mode 100644 index 00000000..3927b32c --- /dev/null +++ b/results/scraper/launchpad-without-comments/1884831 @@ -0,0 +1,21 @@ +qemu-nbd fails to discard bigger chunks + +This report is moved from systemd to here: +https://github.com/systemd/systemd/issues/16242 + +A qemu-nbd device reports that it can discard a lot of bytes: + +cat /sys/block/nbd0/queue/discard_max_bytes +2199023255040 + +And indeed, discard works with small images: + +$ qemu-img create -f qcow2 /tmp/image.img 2M +$ sudo qemu-nbd --connect=/dev/nbd0 /tmp/image.img +$ sudo blkdiscard /dev/nbd0 + +but not for bigger ones (still smaller than discard_max_bytes): + +$ qemu-img create -f qcow2 /tmp/image.img 5G +$ sudo qemu-nbd --connect=/dev/nbd0 /tmp/image.img +$ sudo blkdiscard /dev/nbd0 \ No newline at end of file |