linux-ext4 - Ext4 tail merging?

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:	Tue, 23 Dec 2014 16:34:29 -0500
From:	Phillip Susi <psusi@...ntu.com>
To:	ext4 development <linux-ext4@...r.kernel.org>
Subject: Ext4 tail merging?

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Ext4 still does not support tail merging right?  I had a user post
this filefrag output and was surprised to see that it says the merged
flag is set.  How can this be?

$ filefrag -v /boot/grub/grubenv
Filesystem type is: ef53
Filesystem cylinder groups approximately 19
File size of /boot/grub/grubenv is 1024 (1 block of 4096 bytes)
 ext: logical_offset: physical_offset: length: expected: flags:
   0: 0.. 0: 494592.. 494592: 1: merged,eof
/boot/grub/grubenv: 1 extent found, perfection would be -1 extent

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.17 (MingW32)

iQEcBAEBAgAGBQJUmd/lAAoJENRVrw2cjl5RL1YH+gOPL+fxjD9zUlgOZf40D25l
HgyXP6uXiiLmm/ZUq+htmsvcsM2B7ymT2eZ7mFJfPW90zZbwY9aMXLxf7sSwwu9w
9aETK/s/aMzih+CEii4oDAd2URzpHGzYeQyvH5xPm01JOm7aHMUzw8kMYE5AFvsB
8/HJWboAbZFpdFQO7GRcFWknbEhHAfYwOCOvv7H5Ouks7+Ia07fQD68pzbdVtP90
LDRbml1cg7Us8BJa1Hrc/DfYTa0DcsIpAgFlbCEAu7Mui2C2EW0qDX6TCp9jHM6C
6XGjGqW1f70rgAzK4P2sfMa1UkF/PQQpoTiKjzinZuBbc6Krv7tjJvPXrv7uy1Q=
=GIq0
-----END PGP SIGNATURE-----
--
To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html