Author: allanjude Date: Thu Nov 5 17:10:14 2020 New Revision: 367393 URL: https://svnweb.freebsd.org/changeset/base/367393
Log: VirtIO: Make sure the guest knows the TRIM alignment requirements If bhyve is used to emulate 512e access in guest OS, then discard addresses should be properly aligned. Otherwise ioctl DIOCGDELETE fails for 512b requires on devices with 4K sector size. see g_dev_ioctl() in sys/geom/geom_dev.c Submitted by: Vitaliy Gusev <gusev.vita...@gmail.com> MFC after: 1 week Sponsored by: vStack.com Differential Revision: https://reviews.freebsd.org/D27075 Modified: head/usr.sbin/bhyve/pci_virtio_block.c Modified: head/usr.sbin/bhyve/pci_virtio_block.c ============================================================================== --- head/usr.sbin/bhyve/pci_virtio_block.c Thu Nov 5 16:47:23 2020 (r367392) +++ head/usr.sbin/bhyve/pci_virtio_block.c Thu Nov 5 17:10:14 2020 (r367393) @@ -523,7 +523,7 @@ pci_vtblk_init(struct vmctx *ctx, struct pci_devinst * sc->vbsc_cfg.vbc_writeback = 0; sc->vbsc_cfg.max_discard_sectors = VTBLK_MAX_DISCARD_SECT; sc->vbsc_cfg.max_discard_seg = VTBLK_MAX_DISCARD_SEG; - sc->vbsc_cfg.discard_sector_alignment = sectsz / VTBLK_BSIZE; + sc->vbsc_cfg.discard_sector_alignment = MAX(sectsz, sts) / VTBLK_BSIZE; /* * Should we move some of this into virtio.c? Could _______________________________________________ svn-src-all@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
