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[How to] Mount VMFS spreads accross several extents




If you a have a VMFS volume spreads accross several disks and want to mount this volume in your rescue-customer boot you will obtain a Segmentation faults because of a bug in the vmfs6-tools available in the Debian repository:

$ vmfs6-fuse /dev/sdd1 /dev/sda1 /dev/sdb1 /dev/sdc1 /dev/sde1 /dev/sdf1 /root/mnt
VMFS version: 6
Segmentation fault

Thanks to this issue, you will be able to mount this volume:


git clone
cd vmfs6-tool
git checkout vmfs6-64-init_pb_first
./configure && make

You will find the vmfs-fuse binary in ./vmfs-fuse/vmfs-fuse.

Now, you need to find the “head” of your VMFS volume. To do that, use the head /dev/sdX1 | strings on each partition until you find the name of your datastore.
You just found the first disk to use in the vmfs-fuse command (let’s say /dev/sdd1).

Now, you need to find the correct order of the other disks.
Let’s say others partitions of your volume are /dev/sda1 and /dev/sdb1.

First try vmfs6-fuse/vmfs-fuse/vmfs-fuse /dev/sdd1 /dev/sd1 /dev/sdb1 /mnt.
Try to perform a tree, a du or a ls on each folder of /mnt. If you can see all your files you are good!
If you obtain a Transport endpoint is not connected it means the order of your disks is not correct. Umount your /mnt and try another combination.

Hope it will work for you!
Thanks to weafon for the fix of vmfs-fuse!