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| Who | When | What | Removed | Added |
|---|---|---|---|---|
| Tahlia Richardson | 2013-12-12 00:32:37 UTC | CC | trichard | |
| RHEL Program Management | 2013-12-12 18:04:41 UTC | Keywords | Documentation | |
| Laura Novich | 2014-03-30 08:16:32 UTC | Status | NEW | ASSIGNED |
| CC | lnovich | |||
| Gerd Hoffmann | 2014-03-31 10:36:05 UTC | CC | lersek | |
| Doc Text | Cause: SeaBIOS runs in real mode for compatibility with BIOS interfaces. This limits the amount of memory available. Consequence: The number of disks SeaBIOS is able to handle is limited. Supported disk counts are: virtio-scsi: 64 virtio-blk: 4 ahci/sata: 24 (4 controllers with all 6 ports hooked up). usb-storage: 4 (should be enough for all practical purposes, usb isn't the interface you want use for lots of disks anyway). Workaround (if any): When attaching many disks to your virtual machine make, sure that your system disk gets a small pci slot number, so SeaBIOS will see it first when scanning the pci bus. It is also recommended to use virtio-scsi instead of virtio-blk as the per-disk memory overhead is smaller. Result: [ ??? ] | |||
| Doc Type | Bug Fix | Known Issue | ||
| Flags | needinfo?(lersek) | |||
| Laszlo Ersek | 2014-03-31 10:50:07 UTC | Doc Text | Cause: SeaBIOS runs in real mode for compatibility with BIOS interfaces. This limits the amount of memory available. Consequence: The number of disks SeaBIOS is able to handle is limited. Supported disk counts are: virtio-scsi: 64 virtio-blk: 4 ahci/sata: 24 (4 controllers with all 6 ports hooked up). usb-storage: 4 (should be enough for all practical purposes, usb isn't the interface you want use for lots of disks anyway). Workaround (if any): When attaching many disks to your virtual machine make, sure that your system disk gets a small pci slot number, so SeaBIOS will see it first when scanning the pci bus. It is also recommended to use virtio-scsi instead of virtio-blk as the per-disk memory overhead is smaller. Result: [ ??? ] | Cause: SeaBIOS runs in real mode for compatibility with BIOS interfaces. This limits the amount of memory available. Consequence: The number of disks SeaBIOS is able to handle is limited. Supported disk counts are: virtio-scsi: 64 virtio-blk: 4 ahci/sata: 24 (4 controllers with all 6 ports hooked up). usb-storage: 4 (should be enough for all practical purposes, usb isn't the interface you want use for lots of disks anyway). Workaround (if any): When attaching many disks to your virtual machine, make sure that your system disk gets a small pci slot number, so SeaBIOS will see it first when scanning the pci bus. It is also recommended to use virtio-scsi instead of virtio-blk as the per-disk memory overhead is smaller. Result: [ ??? ] |
| Flags | needinfo?(lersek) | |||
| Yoana Ruseva | 2014-06-06 14:53:37 UTC | CC | yruseva | |
| Doc Text | Cause: SeaBIOS runs in real mode for compatibility with BIOS interfaces. This limits the amount of memory available. Consequence: The number of disks SeaBIOS is able to handle is limited. Supported disk counts are: virtio-scsi: 64 virtio-blk: 4 ahci/sata: 24 (4 controllers with all 6 ports hooked up). usb-storage: 4 (should be enough for all practical purposes, usb isn't the interface you want use for lots of disks anyway). Workaround (if any): When attaching many disks to your virtual machine, make sure that your system disk gets a small pci slot number, so SeaBIOS will see it first when scanning the pci bus. It is also recommended to use virtio-scsi instead of virtio-blk as the per-disk memory overhead is smaller. Result: [ ??? ] | The SeaBIOS application runs in real mode for compatibility with BIOS interfaces. This limits the amount of memory available. As a consequence, SeaBIOS is only able to handle a limited number of disks. Currently, the supported number of disks is: virtio-scsi — 64 virtio-blk — 4 ahci/sata — 24 (4 controllers with all 6 ports connected) usb-storage — 4 As a workaround for this problem, when attaching a large number of disks to your virtual machine, make sure that your system disk has a small pci slot number, so SeaBIOS sees it first when scanning the pci bus. It is also recommended to use the virtio-scsi device instead of virtio-blk as the per-disk memory overhead is smaller. |
||
| Dayle Parker | 2014-10-21 06:54:18 UTC | Keywords | Triaged | |
| Flags | needinfo?(kraxel) needinfo?(lersek) | |||
| Gerd Hoffmann | 2014-10-21 09:25:40 UTC | Flags | needinfo?(kraxel) needinfo?(lersek) | |
| Dayle Parker | 2014-10-24 00:26:43 UTC | Assignee | lnovich | virt-docs |
| John Skeoch | 2014-12-15 00:56:45 UTC | CC | rhod | knoel |
| Dayle Parker | 2015-01-12 03:18:42 UTC | Assignee | virt-docs | cboyle |
| Charlie | 2015-02-11 23:37:45 UTC | Status | ASSIGNED | ON_QA |
| Doc Text | The SeaBIOS application runs in real mode for compatibility with BIOS interfaces. This limits the amount of memory available. As a consequence, SeaBIOS is only able to handle a limited number of disks. Currently, the supported number of disks is: virtio-scsi — 64 virtio-blk — 4 ahci/sata — 24 (4 controllers with all 6 ports connected) usb-storage — 4 As a workaround for this problem, when attaching a large number of disks to your virtual machine, make sure that your system disk has a small pci slot number, so SeaBIOS sees it first when scanning the pci bus. It is also recommended to use the virtio-scsi device instead of virtio-blk as the per-disk memory overhead is smaller. | The SeaBIOS application runs in real mode for compatibility with BIOS interfaces. This limits the amount of memory available. As a consequpci holeence, SeaBIOS is only able to handle a limited number of disks. Currently, the supported number of disks is: virtio-scsi — 64 virtio-blk — 4 ahci/sata — 24 (4 controllers with all 6 ports connected) usb-storage — 4 As a workaround for this problem, when attaching a large number of disks to your virtual machine, make sure that your system disk has a small pci slot number, so SeaBIOS sees it first when scanning the pci bus. It is also recommended to use the virtio-scsi device instead of virtio-blk as the per-disk memory overhead is smaller. | ||
| Flags | needinfo?(kraxel) | |||
| Gerd Hoffmann | 2015-02-23 14:23:24 UTC | Flags | needinfo?(kraxel) | |
| Dayle Parker | 2015-03-06 03:20:18 UTC | Status | ON_QA | VERIFIED |
| Dayle Parker | 2015-03-06 03:27:07 UTC | Comment 14 is private | 1 | 0 |
| Status | VERIFIED | CLOSED | ||
| Resolution | --- | CURRENTRELEASE | ||
| Last Closed | 2015-03-05 22:27:07 UTC | |||
| John Skeoch | 2016-02-01 01:49:42 UTC | CC | r.landmann | |
| Alasdair Kergon | 2019-03-06 01:23:35 UTC | Pool ID | 220 | 238 |
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