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Hi friends:
I put a file(ceph_0.94.2-1.tar.gz, size 23812K) to ceph:
ceph@node110:~$ s3cmd ls 2015-08-27 06:13 s3://bkt-key ceph@node110:~$ s3cmd put ceph_0.94.2-1.tar.gz s3://bkt-key WARNING: Module python-magic is not available. Guessing MIME types based on file extensions. ceph_0.94.2-1.tar.gz -> s3://bkt-key/ceph_0.94.2-1.tar.gz [part 1 of 2, 15MB] 15728640 of 15728640 100% in 0s 26.21 MB/s done ceph_0.94.2-1.tar.gz -> s3://bkt-key/ceph_0.94.2-1.tar.gz [part 2 of 2, 8MB] 8654277 of 8654277 100% in 0s 19.66 MB/s done
ceph@node110:~$ rados ls -p .rgw.buckets.index .dir.default.34155.1
ceph@node110:~$ rados ls -p .rgw.buckets default.264124.1_ceph_0.94.2-1.tar.gz default.264124.1__multipart_ceph_0.94.2-1.tar.gz.2~jwrAAAcyDV2WQ84lYvaoAa8l0V33hwb.1 default.264124.1__shadow_ceph_0.94.2-1.tar.gz.2~jwrAAAcyDV2WQ84lYvaoAa8l0V33hwb.1_1 default.264124.1__shadow_ceph_0.94.2-1.tar.gz.2~jwrAAAcyDV2WQ84lYvaoAa8l0V33hwb.1_2 default.264124.1__shadow_ceph_0.94.2-1.tar.gz.2~jwrAAAcyDV2WQ84lYvaoAa8l0V33hwb.1_3 default.264124.1__multipart_ceph_0.94.2-1.tar.gz.2~jwrAAAcyDV2WQ84lYvaoAa8l0V33hwb.2 default.264124.1__shadow_ceph_0.94.2-1.tar.gz.2~jwrAAAcyDV2WQ84lYvaoAa8l0V33hwb.2_1 default.264124.1__shadow_ceph_0.94.2-1.tar.gz.2~jwrAAAcyDV2WQ84lYvaoAa8l0V33hwb.2_2
the obj size of above order is: 0M、4M、4M、4M、3M、4M、4M、26K, the total size is: 23812K equals with file ceph_0.94.2-1.tar.gz size
my question: 1、s3cmd put file per part is 15M, what is it limited its size, s3cmd or ceph? 2、The obj “default.264124.1_ceph_0.94.2-1.tar.gz” size if zero, what is the use of it? 3、obj’s name how to constitute? what means multipart an shadow? (bucket-id_mutipart/shadow_file-name.[hash?].num_num ) 4、“.dir.default.34155.1” size is zero, is bucket index save as a object in rados? if it true which pool bucket index saved? how can I look it? 5、who can give me some suggest about understand ceph, website, blog, book,video and so on? thanks!
thanks my friend…
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