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docs/backupdb.txt: small fixes, thanks to David Triendl

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Brian Warner 2009-07-19 18:04:56 -07:00
parent c6fce3a1c6
commit 9b18930c2f
1 changed files with 5 additions and 4 deletions
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docs/backupdb.txt
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@ -79,8 +79,9 @@ The upload process starts with a pathname (like ~/.emacs) and wants to end up
with a file-cap (like URI:CHK:...). with a file-cap (like URI:CHK:...).
The first step is to convert the path to an absolute form The first step is to convert the path to an absolute form
(/home/warner/emacs) and do a lookup in the last_upload table. If the path is (/home/warner/.emacs) and do a lookup in the local_files table. If the path
not present in this table, the file must be uploaded. The upload process is: is not present in this table, the file must be uploaded. The upload process
is:
1. record the file's size, creation time, and modification time 1. record the file's size, creation time, and modification time
2. upload the file into the grid, obtaining an immutable file read-cap 2. upload the file into the grid, obtaining an immutable file read-cap
@ -89,9 +90,9 @@ not present in this table, the file must be uploaded. The upload process is:
5. add an entry to the 'local_files' table, with the fileid, the path, 5. add an entry to the 'local_files' table, with the fileid, the path,
and the local file's size/ctime/mtime and the local file's size/ctime/mtime
If the path *is* present in 'last_upload', the easy-to-compute identifying If the path *is* present in 'local_files', the easy-to-compute identifying
information is compared: file size and ctime/mtime. If these differ, the file information is compared: file size and ctime/mtime. If these differ, the file
must be uploaded. The row is removed from the last_upload table, and the must be uploaded. The row is removed from the local_files table, and the
upload process above is followed. upload process above is followed.
If the path is present but ctime or mtime differs, the file may have changed. If the path is present but ctime or mtime differs, the file may have changed.