linux-ext4 - How to resize to an bigger then 16TB ext4 filesysteem on Debian

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Message-ID: <53468055.4070700@powercraft.nl>
Date:	Thu, 10 Apr 2014 13:28:21 +0200
From:	Jelle de Jong <jelledejong@...ercraft.nl>
To:	linux-ext4@...r.kernel.org
Subject: How to resize to an bigger then 16TB ext4 filesysteem on Debian

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Hello everyone,

https://packages.debian.org/wheezy/e2fsprogs

# resize2fs /dev/lvm0-vol/storage
resize2fs 1.42.5 (29-Jul-2012)
resize2fs: New size too large to be expressed in 32 bits

(will the command work with e2fsprogs 1.42.9-3?)

# tune2fs -l /dev/lvm0-vol/storage
http://paste.debian.net/92889/

Suggestions has to be stable enough for production systems.

I now did a lvreduce -L 16TB /dev/lvm0-vol/storage and resize2fs
/dev/lvm0-vol/storage (its running now)

# resize2fs /dev/lvm0-vol/storage
resize2fs 1.42.5 (29-Jul-2012)
Filesystem at /dev/lvm0-vol/storage is mounted on /srv/storage;
on-line resizing required
old_desc_blocks = 464, new_desc_blocks = 1024
Performing an on-line resize of /dev/lvm0-vol/storage to 4294967295
(4k) blocks.

Kind regards,

Jelle de Jong
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