Hi Lars, I don't think the problem is fully fixed. I'm still getting weird errors depending how I read the backed up files from the fuse-mounted repository. As an example, I've attached an annoted terminal session showing how if I try to read an epub (with Calibre's ebook-viewer) from a fuse-mounted repo, I get corruption. But if I first copy it out using cp then it's OK. Bizarre stuf...
Cheers Nemo
backupfuse/Books is an obnam mount of the latest generation /Books is the folder that was backed up ebook-viewer is the Calibre ebook-viewer (v1.23), written in python $ md5 backupfuse/Books/handbook.epub <--A) CHECKSUM OK 06d524ff85facfc2993e67ef6494d05f backupfuse/Books/handbook.epub $ ebook-viewer backupfuse/Books/handbook.epub <--B1) TRY TO VIEW THE EPUB InputFormatPlugin: EPUB Input running on backupfuse/Books/handbook.epub EPUB appears to be invalid ZIP file, trying a more forgiving ZIP parser <--B2) EPUB IS CORRUPTED $ ebook-viewer /Books/handbook.epub <--C1) LET'S GO CHECK THE ORIGINAL InputFormatPlugin: EPUB Input running on /Books/handbook.epub Found HTML cover OEBPS/Text/cover.html <--C2) ORIGINAL READS OK $ md5 /Books/handbook.epub 06d524ff85facfc2993e67ef6494d05f /Books/handbook.epub <--C3) BUT ORIGINAL HAS SAME MD5 WE SAW IN STEP A! $ md5 backupfuse/Books/handbook.epub <--D) CHECK MD5 OF BACKED FILE AGAIN b8d645db3af61ae2e8de03f496a1788d backupfuse/Books/handbook.epub <--D2) CHECKSUM HAS CHANGED!! $ sudo -s # echo 3 > /proc/sys/vm/drop_caches <--E) DROP LINUX CACHES # exit $ md5 backupfuse/Books/handbook.epub <--F1) CHECK MD5 AGAIN 06d524ff85facfc2993e67ef6494d05f backupfuse/Books/handbook.epub <--F2) IT'S CORRECT AGAIN $ $ cp backupfuse/Books/handbook.epub /tmp/ <--G1) SO NOW COPY IT OUT USING CP $ md5 /tmp/handbook.epub 06d524ff85facfc2993e67ef6494d05f /tmp/handbook.epub <--G2) GOOD CHECKSUM $ ebook-viewer /tmp/handbook.epub InputFormatPlugin: EPUB Input running on /tmp/handbook.epub Found HTML cover OEBPS/Text/cover.html <--G3) NOW IT READS OK $ ebook-viewer backupfuse/Books/handbook.epub <--H1) TRY READING THE BACKUP COPY InputFormatPlugin: EPUB Input running on backupfuse/Books/handbook.epub Found HTML cover OEBPS/Text/cover.html <--H2) BACKUP COPY READS OK PROBABLY FROM CACHE $ sudo -s # echo 3 > /proc/sys/vm/drop_caches <--I) DROPPING CACHE # exit $ ebook-viewer backupfuse/Books/handbook.epub <--J1) TRY READING BACKUP COPY AGAIN InputFormatPlugin: EPUB Input running on backupfuse/Books/handbook.epub EPUB appears to be invalid ZIP file, trying a more forgiving ZIP parser <--J2) CORRUPTED AGAIN
