[linux-lvm] Snapshot on "disk": file system consistent?

[Christian Völker <chrischan knebb de>]

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Yohoo!

Just for my own curiousity:

I have a LVM volume which is presentet through iSCSI to another box. On
the other box I used fdisk to create a partition and formatted the
partition with ext3.

Now I'm performing a backup on the local iSCSI/LVM server like follows:

Taking a snapshot of the LV:
lvcreate -s -p r -c 64K -L 30G -n snap_backup /dev/vg/backup

Setting up the lo-device with the calculation for the partition start:
losetup -o$[512*64] /dev/loop1 /dev/vg/snap_backup

Mounting:
mount /dev/loop1 /srv/snap/ -t ext3 -o ro

Now my question is about the file system on the partition. Is it
consistent? Would it be better to perform a fsck before mounting?

Or can I rely on the above procedure to gain always a proper filesystem?
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