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Re: [Qemu-devel] [PATCH v3 00/27] Block layer cleanup & fixes
From: |
Kevin Wolf |
Subject: |
Re: [Qemu-devel] [PATCH v3 00/27] Block layer cleanup & fixes |
Date: |
Thu, 08 Sep 2011 13:40:13 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:6.0) Gecko/20110816 Thunderbird/6.0 |
Am 06.09.2011 18:58, schrieb Markus Armbruster:
> This patch series looks bigger than it is. All the patches are small
> and hopefully easy to review.
>
> Objectives:
>
> * Push BlockDriverState members locked, tray_open, media_changed into
> device models, where they belong. Kevin picked the patches pushing
> media_changed from v2, so that part's gone already.
>
> * BlockDriverState member removable is a confusing mess, replace it.
>
> * Improve eject -f.
>
> Also clean up minor messes as they get in the way.
>
> It is based on Kevin's block branch.
>
> Part I: Move tray state to device models
> PATCH 01-05 IDE tray open/closed
> PATCH 06-07 SCSI tray open/closed
> PATCH 08-09 Kill BlockDriverState tray_open
> PATCH 10-11 IDE & SCSI track tray lock
> PATCH 12-14 Kill BlockDriverState locked
> PATCH 15-16 IDE & SCSI tray bug fixes
> PATCH 17 IDE migrate tray state
>
> Part II: Miscellaneous
> PATCH 18-19 Replace BlockDriverState removable
> PATCH 20 Cover tray open/closed in info block
> PATCH 21-25 Reduce unclean use of block_int.h
> PATCH 26-27 Improve eject -f
>
> Naturally, I want all parts applied. But I did my best to make
> applying only a prefix workable, too.
>
> Review invited from:
>
> * Kevin, Christoph and Amit reviewed previous versions.
>
> * Hannes ACKed the SCSI stuff in v2.
>
> * Luiz reviewed the patches that affect QMP's query-block. I renamed
> response member "ejected" to "tray-open" since then.
>
> * Paolo commented PATCH 17 `ide/atapi: Preserve tray state on
> migration'.
>
> * Stefano reviewed v1 of PATCH 18 (affects "-drive if=xen").
>
> Testing
>
> * Linux installs from CD to empty disk, then boots fine from disk.
>
> * For both IDE and SCSI:
>
> - info block reports tray state correctly
>
> - Guest locking the tray stops eject (without -f) and change
>
> - eject -f; change works even while tray is locked by guest
>
> - Reading /dev/sr0 with tray open behaves as before: IDE closes the
> tray and reads (matches bare metal), SCSI reports no medium
>
> - Tray state is migrated correctly (tested with savevm/loadvm)
>
> * Guest still notices CD media change (IDE only, SCSI doesn't work
> before or after my patches because GESN isn't implemented)
>
> * Migrating ide-cd to older version works when tray is closed and
> unlocked, else fails (tested with savevm/loadvm)
>
>
> v3:
>
> * Rebased to block branch cfc606da
> - Old PATCH 01-05,25,28-34,40 already there, drop
> - a couple of simple conflicts in hw/scsi-disk.c
>
> * Drop old PATCH v2 27 scsi-disk: Preserve tray state on migration,
> because it doesn't make much sense without working SCSI migration.
>
> * Drop old PATCH v2 22 ide/atapi: Avoid physical/virtual tray state
> mismatch, because it has a bug, how to best fix it isn't obvious,
> and it's not essential to this series. Drop related PATCH v2 20,24,
> too. I plan to revisit them later.
>
> * Clean up `ide: Use a table to declare which drive kinds accept each
> command' a bit (Blue & Kevin)
>
> * Hannes's advice:
> - Rename some SCSISense variables
>
> * Kevin's advice:
> - Add comments to explain MMC-5 jargon loej
> - Make bdrv_lock_medium() parameter locked bool.
>
> v2:
>
> * Rebased to block branch; non-trivial conflicts:
> - Old PATCH 01-02,06-09 already there, drop
> - `block: Attach non-qdev devices as well':
> - cover new pci_piix3_xen_ide_unplug()
> - hw/nand has been qdefivied, drop hunk
> - onenand_init() changed, rewrite hunk
> - pci_piix3_xen_ide_unplug() needs new PATCH 33.
>
> * Drop old PATCH 18 `scsi-disk: Reject CD-specific SCSI commands to
> disks' because Hannes wants to do it differently, and it's not
> essential to this series.
>
> * Christoph's advice:
> - Rework `ide: Update command code definitions as per ACS-2'
> - Add comment to `ide: Fix ATA command READ to set ATAPI signature
> for CD-ROM'
> - Squash `ide/atapi: Track tray open/close state' and `ide/atapi:
> Switch from BlockDriverState's tray_open to own'
> - Squash `ide/atapi: Track tray locked state' and `ide/atapi: Switch
> from BlockDriverState's locked to own tray_locked'
> - Squash `scsi-disk: Track tray locked state' and `scsi-disk: Switch
> from BlockDriverState's locked to own tray_locked'
> - Drop `block: Move BlockDriverAIOCB & friends from block_int.h to
> block.h'
>
> * Luiz's advice:
> - Change query-block to always include "ejected" for removable
> devices. Requires moving `block: Show whether the guest ejected
> the medium in info block', which causes a bunch of conflicts.
>
> * A few cosmetic improvements
>
>
> Markus Armbruster (27):
> ide: Fix ATA command READ to set ATAPI signature for CD-ROM
> ide: Use a table to declare which drive kinds accept each command
> ide: Reject ATA commands specific to drive kinds
> ide/atapi: Clean up misleading name in cmd_start_stop_unit()
> ide/atapi: Track tray open/close state
> scsi-disk: Factor out scsi_disk_emulate_start_stop()
> scsi-disk: Track tray open/close state
> block: Revert entanglement of bdrv_is_inserted() with tray status
> block: Drop tray status tracking, no longer used
> ide/atapi: Track tray locked state
> scsi-disk: Track tray locked state
> block: Leave enforcing tray lock to device models
> block: Drop medium lock tracking, ask device models instead
> block: Rename bdrv_set_locked() to bdrv_lock_medium()
> ide/atapi: Don't fail eject when tray is already open
> scsi-disk: Fix START_STOP to fail when it can't eject
> ide/atapi: Preserve tray state on migration
> block: Clean up remaining users of "removable"
> block: Drop BlockDriverState member removable
> block: Show whether the virtual tray is open in info block
> block: Move BlockConf & friends from block_int.h to block.h
> hw: Trim superfluous #include "block_int.h"
> block: New bdrv_set_buffer_alignment()
> block: Reset buffer alignment on detach
> nbd: Clean up use of block_int.h
> block: New change_media_cb() parameter load
> ide/atapi scsi-disk: Make monitor eject -f, then change work
>
> block.c | 104 ++++++++++++++++++---------------
> block.h | 63 ++++++++++++++++++--
> block/nbd.c | 1 +
> block/raw-posix.c | 8 +-
> block/raw.c | 6 +-
> block_int.h | 40 +------------
> blockdev.c | 10 +--
> hw/fdc.c | 4 +-
> hw/ide/atapi.c | 58 +++++++++----------
> hw/ide/cmd646.c | 1 -
> hw/ide/core.c | 160 +++++++++++++++++++++++++++++++++++++++++---------
> hw/ide/ich.c | 1 -
> hw/ide/internal.h | 3 +-
> hw/ide/isa.c | 1 -
> hw/ide/macio.c | 1 -
> hw/ide/microdrive.c | 1 -
> hw/ide/mmio.c | 1 -
> hw/ide/pci.c | 1 -
> hw/ide/via.c | 1 -
> hw/lsi53c895a.c | 1 -
> hw/scsi-bus.c | 10 +++
> hw/scsi-disk.c | 69 +++++++++++++++++++---
> hw/scsi-generic.c | 1 -
> hw/scsi.h | 5 +-
> hw/sd.c | 2 +-
> hw/virtio-blk.c | 3 +-
> hw/virtio.h | 2 +-
> nbd.c | 1 +
> nbd.h | 2 -
> qmp-commands.hx | 2 +
> trace-events | 1 +
> 31 files changed, 367 insertions(+), 197 deletions(-)
Thanks, applied all to the block branch after fixing up patch 2 and 14
as discussed.
Kevin
- Re: [Qemu-devel] [PATCH v3 13/27] block: Drop medium lock tracking, ask device models instead, (continued)
- [Qemu-devel] [PATCH v3 24/27] block: Reset buffer alignment on detach, Markus Armbruster, 2011/09/06
- [Qemu-devel] [PATCH v3 25/27] nbd: Clean up use of block_int.h, Markus Armbruster, 2011/09/06
- [Qemu-devel] [PATCH v3 23/27] block: New bdrv_set_buffer_alignment(), Markus Armbruster, 2011/09/06
- [Qemu-devel] [PATCH v3 27/27] ide/atapi scsi-disk: Make monitor eject -f, then change work, Markus Armbruster, 2011/09/06
- [Qemu-devel] [PATCH v3 18/27] block: Clean up remaining users of "removable", Markus Armbruster, 2011/09/06
- [Qemu-devel] [PATCH v3 14/27] block: Rename bdrv_set_locked() to bdrv_lock_medium(), Markus Armbruster, 2011/09/06
- Re: [Qemu-devel] [PATCH v3 00/27] Block layer cleanup & fixes,
Kevin Wolf <=