Hi again, Jelle de Jong wrote: > Dear Jean-Pierre André, > > root@backup:~# ls -hal > /usr/lib/x86_64-linux-gnu/ntfs-3g/ntfs-plugin-80000013.so > -rw-r--r-- 1 root root 16K Jan 10 13:34 > /usr/lib/x86_64-linux-gnu/ntfs-3g/ntfs-plugin-80000013.so > > How do I know if ntfs-3g is using the plug-in?
The plugin is dynamically loaded when you first access a deduplicated file. This is recorded in the syslog. Note : you should probably make it executable (e.g. by chmod 755) > > lvcreate --snapshot --name sr7-disk2-snapshot-copy --size 50G > /dev/lvm1-vol/sr7-disk2 > lvchange -ay /dev/lvm1-vol/sr7-disk2-snapshot-copy > blkid /dev/lvm1-vol/sr7-disk2-snapshot-copy > kpartx -avg /dev/lvm1-vol/sr7-disk2-snapshot-copy > blkid /dev/mapper/lvm1--vol-sr7--disk2--snapshot--copy2 > mount -o ro -t ntfs-3g > /dev/mapper/lvm1--vol-sr7--disk2--snapshot--copy2 /mnt/sr7-sdb2 > ls -hal /mnt/sr7-sdb2/ALGEMEEN/ | grep "unsupported reparse point" > > Shows no more unsupported reparse point! This might be a good indication that the plugin is used. Did you check whether the files are readable ? > umount /mnt/sr7-sdb2/ > kpartx -dv /dev/lvm1-vol/sr7-disk2-snapshot-copy > lvchange -an /dev/lvm1-vol/sr7-disk2-snapshot-copy > lvremove /dev/lvm1-vol/sr7-disk2-snapshot-copy > > root@backup:~# fgrep ntfs-3g /var/log/syslog > Jan 10 16:14:28 backup ntfs-3g[13082]: Version 2016.2.22AR.1 integrated > FUSE 28 > Jan 10 16:14:28 backup ntfs-3g[13082]: Mounted > /dev/mapper/lvm1--vol-sr7--disk2--snapshot--copy2 (Read-Only, label > "DATA", NTFS 3.1) > Jan 10 16:14:28 backup ntfs-3g[13082]: Cmdline options: ro > Jan 10 16:14:28 backup ntfs-3g[13082]: Mount options: > ro,allow_other,nonempty,relatime,fsname=/dev/mapper/lvm1--vol-sr7--disk2--snapshot--copy2,blkdev,blksize=4096 > > Jan 10 16:14:28 backup ntfs-3g[13082]: Ownership and permissions > disabled, configuration type 7 > Jan 10 16:23:32 backup ntfs-3g[13082]: Unmounting In this syslog excerpt I do not see the plugin loading, did you access a deduplicated file before unmounting ? > /dev/mapper/lvm1--vol-sr7--disk2--snapshot--copy2 (DATA) > > However when using with the virt-filesystems and guestmount tools it > does not work: > > root@backup:~# lvcreate --snapshot --name sr7-disk2-snapshot-copy --size > 50G /dev/lvm1-vol/sr7-disk2 > root@backup:~# lvchange -ay /dev/lvm1-vol/sr7-disk2-snapshot-copy > > root@backup:~# blkid /dev/lvm1-vol/sr7-disk2-snapshot-copy > /dev/lvm1-vol/sr7-disk2-snapshot-copy: > PTUUID="8d00ec46-cb6d-457f-bfc8-703089c83fb9" PTTYPE="gpt" > > root@backup:~# virt-filesystems -a /dev/lvm1-vol/sr7-disk2-snapshot-copy > /dev/sda2 > > root@backup:~# guestmount --ro -a /dev/lvm1-vol/sr7-disk2-snapshot-copy > -m /dev/sda2 /mnt/sr7-sda2 > > root@backup:~# ls -hal /mnt/sr7-sda2/ALGEMEEN/ | grep "unsupported > reparse point" > lrwxrwxrwx 1 root root 26 May 19 2008 080514.Index I Directory > algemeen.xls -> unsupported reparse point > lrwxrwxrwx 1 root root 26 Dec 17 2009 2009-12-17 Index > mappenstructuur.txt -> unsupported reparse point > lrwxrwxrwx 1 root root 26 May 2 2013 ber_folders -> unsupported > reparse point > > # verbose output: > root@backup:~# guestmount -vvvv --ro -a > /dev/lvm1-vol/sr7-disk2-snapshot-copy -m /dev/sda2 /mnt/sr7-sda2 > > http://paste.debian.net/hidden/be1c989f/ > > I will sent an email to libgues...@redhat.com to ask what they think. Indeed, as some extra layer could come across, but first check you can actually read files from a plain partition. Regards Jean-Pierre > > Kind regards, > > Jelle de Jong > > On 10/01/17 12:44, Jean-Pierre André wrote: >> Jelle de Jong wrote: >>> Dear Jean-Pierre, >>> >>> We created a test environment with Windows 2016 with data >>> deduplication on. >>> >>> I upgraded the backup server to install ntfs-3g 2016.2.22AR.1. I tried >>> to mount the volume to see if I could read the files, but they show up >>> as unsupported reparse point. >>> >>> I listed the Dedup/ChunkStore in the following pastebin: >>> http://paste.debian.net/hidden/ca51ee46/ >>> >>> I tried to use the ntfs-plugin-80000013.so but I am not sure if it is >>> being used, the bellow is not working so far? >> >> Apparently, the expected location on Debian is >> /usr/lib/x86_64-linux-gnu/ntfs-3g/ntfs-plugin-80000013.so >> but you are getting libntfs-3g from /lib/x86_64-linux-gnu >> maybe there is a symlink. Anyway the same directory is >> expected (check possible errors in your syslog). >> >> If you get errors, please only mount as read-only until >> the issue is solved, choose a sample file of moderate size >> (say 100KB), and post its reparse data, which you can >> get by : >> >> getfattr -h -e hex -n system.ntfs_reparse_data your-sample-file >> >> Regards >> >> Jean-Pierre > ------------------------------------------------------------------------------ Developer Access Program for Intel Xeon Phi Processors Access to Intel Xeon Phi processor-based developer platforms. With one year of Intel Parallel Studio XE. Training and support from Colfax. Order your platform today. http://sdm.link/xeonphi _______________________________________________ ntfs-3g-devel mailing list ntfs-3g-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/ntfs-3g-devel
