Re: [sheepdog] [PATCH 0/3] sheep, dog: configurable vid space
At Mon, 02 Feb 2015 18:23:03 +0900, Hitoshi Mitake wrote: At Mon, 2 Feb 2015 14:58:18 +0900, Takafumi Fujieda wrote: Current, deleted vids are not reused, without cutting relations. If snapshots of many online vdis in a cluster are created continuously, the vid space will be exhausted. To be honest, it is hard for me to understand the motivation of expanding VID space. As you pointed, cutting relation between VDIs enables fine grained VID GC. Is this not enough? I forgot to say that cutting relation for online VDIs is possible now: $ dog vdi snapshot --no-share VDI name cuts relation between existing VDI (which will be snapshot) and newly created working VDI (whose name is VDI name). Thanks, Hitoshi Thanks, Hitoshi These patches make vid space size configurable from 24 bits to 26 bits by using the reserved bits in the oid. A new option -s bits is added to dog cluster format for specify the vid space size. (The default vid space size is 24 bits) These patches don't care compatibility of object files and cluster snapshot data created under different vid spaces. If you want to change your cluster's vid space keeping existing vdis, the cluster must be shutdowned and all vdis should be outputted by using qemu-img and dog vdi backup. Takafumi Fujieda (3): sheep, dog: add vid space variables to the structs sheep, dog: make vid space size variable dog: add a new option to specify the vid space dog/cluster.c | 67 +++- dog/common.c | 32 +- dog/dog.h |3 +- dog/farm/farm.c | 16 ++- dog/farm/farm.h |3 +- dog/node.c|3 +- dog/vdi.c | 22 ++- include/internal_proto.h |6 +++- include/sheepdog_proto.h | 18 +++- sheep/config.c| 20 - sheep/gateway.c | 23 +--- sheep/group.c | 10 +- sheep/journal.c |3 +- sheep/nfs/fs.c|4 +- sheep/nfs/nfs.c |4 +- sheep/object_cache.c | 13 + sheep/object_list_cache.c |2 +- sheep/ops.c | 35 +++- sheep/plain_store.c | 25 ++--- sheep/recovery.c | 10 --- sheep/request.c |3 +- sheep/sheep_priv.h|6 +++- sheep/vdi.c | 43 +--- sheepfs/volume.c |2 +- 24 files changed, 269 insertions(+), 104 deletions(-) -- sheepdog mailing list sheepdog@lists.wpkg.org https://lists.wpkg.org/mailman/listinfo/sheepdog -- sheepdog mailing list sheepdog@lists.wpkg.org https://lists.wpkg.org/mailman/listinfo/sheepdog
Re: [sheepdog] [PATCH 0/3] sheep, dog: configurable vid space
At Mon, 2 Feb 2015 14:58:18 +0900, Takafumi Fujieda wrote: Current, deleted vids are not reused, without cutting relations. If snapshots of many online vdis in a cluster are created continuously, the vid space will be exhausted. To be honest, it is hard for me to understand the motivation of expanding VID space. As you pointed, cutting relation between VDIs enables fine grained VID GC. Is this not enough? Thanks, Hitoshi These patches make vid space size configurable from 24 bits to 26 bits by using the reserved bits in the oid. A new option -s bits is added to dog cluster format for specify the vid space size. (The default vid space size is 24 bits) These patches don't care compatibility of object files and cluster snapshot data created under different vid spaces. If you want to change your cluster's vid space keeping existing vdis, the cluster must be shutdowned and all vdis should be outputted by using qemu-img and dog vdi backup. Takafumi Fujieda (3): sheep, dog: add vid space variables to the structs sheep, dog: make vid space size variable dog: add a new option to specify the vid space dog/cluster.c | 67 +++- dog/common.c | 32 +- dog/dog.h |3 +- dog/farm/farm.c | 16 ++- dog/farm/farm.h |3 +- dog/node.c|3 +- dog/vdi.c | 22 ++- include/internal_proto.h |6 +++- include/sheepdog_proto.h | 18 +++- sheep/config.c| 20 - sheep/gateway.c | 23 +--- sheep/group.c | 10 +- sheep/journal.c |3 +- sheep/nfs/fs.c|4 +- sheep/nfs/nfs.c |4 +- sheep/object_cache.c | 13 + sheep/object_list_cache.c |2 +- sheep/ops.c | 35 +++- sheep/plain_store.c | 25 ++--- sheep/recovery.c | 10 --- sheep/request.c |3 +- sheep/sheep_priv.h|6 +++- sheep/vdi.c | 43 +--- sheepfs/volume.c |2 +- 24 files changed, 269 insertions(+), 104 deletions(-) -- sheepdog mailing list sheepdog@lists.wpkg.org https://lists.wpkg.org/mailman/listinfo/sheepdog -- sheepdog mailing list sheepdog@lists.wpkg.org https://lists.wpkg.org/mailman/listinfo/sheepdog
[sheepdog] [PATCH 0/3] sheep, dog: configurable vid space
Current, deleted vids are not reused, without cutting relations. If snapshots of many online vdis in a cluster are created continuously, the vid space will be exhausted. These patches make vid space size configurable from 24 bits to 26 bits by using the reserved bits in the oid. A new option -s bits is added to dog cluster format for specify the vid space size. (The default vid space size is 24 bits) These patches don't care compatibility of object files and cluster snapshot data created under different vid spaces. If you want to change your cluster's vid space keeping existing vdis, the cluster must be shutdowned and all vdis should be outputted by using qemu-img and dog vdi backup. Takafumi Fujieda (3): sheep, dog: add vid space variables to the structs sheep, dog: make vid space size variable dog: add a new option to specify the vid space dog/cluster.c | 67 +++- dog/common.c | 32 +- dog/dog.h |3 +- dog/farm/farm.c | 16 ++- dog/farm/farm.h |3 +- dog/node.c|3 +- dog/vdi.c | 22 ++- include/internal_proto.h |6 +++- include/sheepdog_proto.h | 18 +++- sheep/config.c| 20 - sheep/gateway.c | 23 +--- sheep/group.c | 10 +- sheep/journal.c |3 +- sheep/nfs/fs.c|4 +- sheep/nfs/nfs.c |4 +- sheep/object_cache.c | 13 + sheep/object_list_cache.c |2 +- sheep/ops.c | 35 +++- sheep/plain_store.c | 25 ++--- sheep/recovery.c | 10 --- sheep/request.c |3 +- sheep/sheep_priv.h|6 +++- sheep/vdi.c | 43 +--- sheepfs/volume.c |2 +- 24 files changed, 269 insertions(+), 104 deletions(-) -- sheepdog mailing list sheepdog@lists.wpkg.org https://lists.wpkg.org/mailman/listinfo/sheepdog
