| Message ID | 20230609115858.4737-11-sergei.shtepa@veeam.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | [v4,01/11] documentation: Block Device Filtering Mechanism | expand |
On 6/9/23 04:58, Sergei Shtepa wrote: > diff --git a/drivers/block/blksnap/Kconfig b/drivers/block/blksnap/Kconfig > new file mode 100644 > index 000000000000..14081359847b > --- /dev/null > +++ b/drivers/block/blksnap/Kconfig > @@ -0,0 +1,12 @@ > +# SPDX-License-Identifier: GPL-2.0 > +# > +# Block device snapshot module configuration > +# > + > +config BLKSNAP > + tristate "Block Devices Snapshots Module (blksnap)" > + help > + Allow to create snapshots and track block changes for block devices. > + Designed for creating backups for simple block devices. Snapshots are > + temporary and are released then backup is completed. Change block when backup is completed. or is the order of operations as listed: release snapshots and then backup can be completed? > + tracking allows to create incremental or differential backups.
On 6/13/23 01:43, Randy Dunlap wrote: >> +config BLKSNAP >> + tristate "Block Devices Snapshots Module (blksnap)" >> + help >> + Allow to create snapshots and track block changes for block devices. >> + Designed for creating backups for simple block devices. Snapshots are >> + temporary and are released then backup is completed. Change block > when backup is completed. > > or is the order of operations as listed: release snapshots and then backup > can be completed? > >> + tracking allows to create incremental or differential backups. "when backup is completed." - it will be more correct. Normal backup process: Take snapshot Release snapshot | Start backup Finish backup | | | Copy data from snapshot images | | -------------------------------------------------------------------------> t In case of failure, for example, when the snapshot is overflowing: The snapshot is corrupted Take snapshot | Release snapshot | Start backup | | Finish failed backup | | Copy data from snapshot images | | | -------------------------------------------------------------------------> t
diff --git a/drivers/block/Kconfig b/drivers/block/Kconfig index 5b9d4aaebb81..74d2d55526a3 100644 --- a/drivers/block/Kconfig +++ b/drivers/block/Kconfig @@ -404,4 +404,6 @@ config BLKDEV_UBLK_LEGACY_OPCODES source "drivers/block/rnbd/Kconfig" +source "drivers/block/blksnap/Kconfig" + endif # BLK_DEV diff --git a/drivers/block/Makefile b/drivers/block/Makefile index 101612cba303..9a2a9a56a247 100644 --- a/drivers/block/Makefile +++ b/drivers/block/Makefile @@ -40,3 +40,5 @@ obj-$(CONFIG_BLK_DEV_NULL_BLK) += null_blk/ obj-$(CONFIG_BLK_DEV_UBLK) += ublk_drv.o swim_mod-y := swim.o swim_asm.o + +obj-$(CONFIG_BLKSNAP) += blksnap/ diff --git a/drivers/block/blksnap/Kconfig b/drivers/block/blksnap/Kconfig new file mode 100644 index 000000000000..14081359847b --- /dev/null +++ b/drivers/block/blksnap/Kconfig @@ -0,0 +1,12 @@ +# SPDX-License-Identifier: GPL-2.0 +# +# Block device snapshot module configuration +# + +config BLKSNAP + tristate "Block Devices Snapshots Module (blksnap)" + help + Allow to create snapshots and track block changes for block devices. + Designed for creating backups for simple block devices. Snapshots are + temporary and are released then backup is completed. Change block + tracking allows to create incremental or differential backups. diff --git a/drivers/block/blksnap/Makefile b/drivers/block/blksnap/Makefile new file mode 100644 index 000000000000..8d528b95579a --- /dev/null +++ b/drivers/block/blksnap/Makefile @@ -0,0 +1,15 @@ +# SPDX-License-Identifier: GPL-2.0 + +blksnap-y := \ + cbt_map.o \ + chunk.o \ + diff_area.o \ + diff_buffer.o \ + diff_storage.o \ + event_queue.o \ + main.o \ + snapimage.o \ + snapshot.o \ + tracker.o + +obj-$(CONFIG_BLKSNAP) += blksnap.o