b0c44badd0
- kvm-block-graph-lock-fix-missed-wakeup-in-bdrv_graph_co_.patch [RHEL-216952] - kvm-block-curl-fix-curl-internal-handles-handling.patch [RHEL-216952] - kvm-block-curl.c-Use-explicit-long-constants-in-curl_eas.patch [RHEL-216952] - kvm-block-curl.c-Fix-CURLOPT_VERBOSE-parameter-type.patch [RHEL-216952] - kvm-block-curl-fix-concurrent-completion-handling.patch [RHEL-216952] - kvm-block-curl-free-s-password-in-cleanup-paths.patch [RHEL-216952] - kvm-nvme-Kick-and-check-completions-in-BDS-context.patch [RHEL-216952] - kvm-nvme-Note-in-which-AioContext-some-functions-run.patch [RHEL-216952] - kvm-block-remove-detached-header-option-from-opts-after-.patch [RHEL-216952] - kvm-block-fix-luks-amend-when-run-in-coroutine.patch [RHEL-216952] - kvm-qed-Don-t-try-to-flush-during-incoming-migration.patch [RHEL-216952] - kvm-block-vmdk-fix-OOB-read-in-vmdk_read_extent.patch [RHEL-216952] - kvm-block-throttle-groups-fix-deadlock-with-iolimits-and.patch [RHEL-216952] - kvm-throttle-group-Fix-race-condition-in-throttle_group_.patch [RHEL-216952] - kvm-qemu-img-Fix-amend-option-parse-error-handling.patch [RHEL-216952] - kvm-qemu-img-rebase-don-t-exceed-IO_BUF_SIZE-in-one-oper.patch [RHEL-216952] - kvm-python-backport-drop-Python3.6-workarounds.patch [RHEL-216952] - kvm-python-backport-Remove-deprecated-get_event_loop-cal.patch [RHEL-216952] - kvm-python-backport-avoid-creating-additional-event-loop.patch [RHEL-216952] - kvm-iotests-147-ensure-temporary-sockets-are-closed-befo.patch [RHEL-216952] - kvm-iotests-151-ensure-subprocesses-are-cleaned-up.patch [RHEL-216952] - kvm-tests-qemu-iotest-fix-iotest-024-with-qed-images.patch [RHEL-216952] - kvm-tests-qemu-iotests-Fix-check-for-existing-file-in-_r.patch [RHEL-216952] - kvm-async-access-bottom-half-flags-with-qatomic_read.patch [RHEL-216952] - kvm-block-linux-aio-bound-ioq_submit-recursion-depth.patch [RHEL-216952] - kvm-block-io-fallback-to-bounce-buffer-if-BLKZEROOUT-is-.patch [RHEL-216952] - kvm-file-posix-populate-pwrite_zeroes_alignment.patch [RHEL-216952] - kvm-block-use-pwrite_zeroes_alignment-when-writing-first.patch [RHEL-216952] - kvm-iotests-add-Linux-loop-device-image-creation-test.patch [RHEL-216952] - kvm-virtio-Fix-crash-when-sriov-pf-is-set-for-non-PCI-Ex.patch [RHEL-216952] - kvm-virtio-scsi-pass-the-same-cdb_size-to-virtio_scsi_po.patch [RHEL-216952] - kvm-hw-scsi-avoid-deadlock-upon-TMF-request-cancelling-w.patch [RHEL-216952] - kvm-virtio-blk-fix-zone-report-buffer-out-of-memory-CVE-.patch [RHEL-216952] - kvm-ide-Fix-potential-assertion-failure-on-VM-stop-for-P.patch [RHEL-216952] - kvm-block-Create-DEFAULT_BLOCK_CONF-macro.patch [RHEL-216952] - kvm-block-Add-more-defaults-to-DEFAULT_BLOCK_CONF.patch [RHEL-216952] - kvm-block-mirror-check-range-when-setting-zero-bitmap-fo.patch [RHEL-216952] - kvm-iotests-test-active-mirror-with-unaligned-small-writ.patch [RHEL-216952] - kvm-block-mirror-fix-assertion-failure-upon-duplicate-co.patch [RHEL-216952] - kvm-commit-Drain-nodes-across-all-of-bdrv_commit.patch [RHEL-216952] - kvm-qemu-io-Add-aio_discard-command.patch [RHEL-216952] - kvm-qcow2-Fix-corruption-on-discard-during-write-with-CO.patch [RHEL-216952] - kvm-iotests-046-Test-that-discard-write_zeroes-wait-for-.patch [RHEL-216952] - kvm-qcow2-Fix-data-loss-on-zero-write-with-detect-zeroes.patch [RHEL-216952] - kvm-block-Fix-crash-after-setting-latency-historygram-wi.patch [RHEL-216952] - Resolves: RHEL-216952 (virt-storage: Backport stable branch fixes [rhel-9])
66 lines
2.4 KiB
Diff
66 lines
2.4 KiB
Diff
From a11658f88c31e633767d1cac342ebff7cb7596d8 Mon Sep 17 00:00:00 2001
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From: Stefan Hajnoczi <stefanha@redhat.com>
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Date: Tue, 7 Oct 2025 10:16:58 -0400
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Subject: [PATCH 27/45] file-posix: populate pwrite_zeroes_alignment
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RH-Author: Kevin Wolf <kwolf@redhat.com>
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RH-MergeRequest: 515: virt-storage: Backport stable branch fixes [9.9]
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RH-Jira: RHEL-216952
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RH-Acked-by: Hanna Czenczek <hreitz@redhat.com>
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RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
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RH-Commit: [27/45] 19faf7156ae4d80e1695f12a96213cbdef0dc82e (kmwolf/centos-qemu-kvm)
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Linux block devices require write zeroes alignment whereas files do not.
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It may come as a surprise that block devices opened in buffered I/O mode
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require the alignment for write zeroes requests although normal
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read/write requests do not.
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Therefore it is necessary to populate the pwrite_zeroes_alignment field.
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Cc: qemu-stable@nongnu.org
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Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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Message-ID: <20251007141700.71891-2-stefanha@redhat.com>
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Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
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Tested-by: Fiona Ebner <f.ebner@proxmox.com>
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Reviewed-by: Fiona Ebner <f.ebner@proxmox.com>
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Reviewed-by: Kevin Wolf <kwolf@redhat.com>
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Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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(cherry picked from commit 98e788b91ad037193b1fb375561ef7e0fef3c2fd)
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Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
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Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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---
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block/file-posix.c | 16 ++++++++++++++++
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1 file changed, 16 insertions(+)
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diff --git a/block/file-posix.c b/block/file-posix.c
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index ace0e23df2..d7f489a40b 100644
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--- a/block/file-posix.c
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+++ b/block/file-posix.c
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@@ -1602,6 +1602,22 @@ static void raw_refresh_limits(BlockDriverState *bs, Error **errp)
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bs->bl.pdiscard_alignment = dalign;
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}
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+
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+#ifdef __linux__
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+ /*
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+ * Linux requires logical block size alignment for write zeroes even
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+ * when normal reads/writes do not require alignment.
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+ */
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+ if (!s->needs_alignment) {
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+ ret = probe_logical_blocksize(s->fd,
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+ &bs->bl.pwrite_zeroes_alignment);
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+ if (ret < 0) {
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+ error_setg_errno(errp, -ret,
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+ "Failed to probe logical block size");
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+ return;
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+ }
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+ }
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+#endif /* __linux__ */
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}
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raw_refresh_zoned_limits(bs, &st, errp);
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--
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2.52.0
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