From: Subranshu Patel <spatel.ml@gmail.com>
To: linux-ext4@vger.kernel.org
Subject: Type of filesystem block
Date: Sun, 24 Mar 2013 22:05:12 +0530 [thread overview]
Message-ID: <CAEUQcegWM0d3tmpNXVmeOSKAJUPzthk8uH96XMN+Ax_5ex5H5Q@mail.gmail.com> (raw)
Query related to finding the block usage information of metadata
blocks in ext4 filesystem.
Using debugfs testb command I can check whether a particular
filesystem block is used or not.
# debugfs -R "testb 171428" /dev/sdd4
debugfs 1.41.12 (17-May-2010)
Block 171428 marked in use
Also its icheck command prints the inode associated, if any, with a
filesystem block.
# debugfs -R "icheck 171428" /dev/sdd4
debugfs 1.41.12 (17-May-2010)
Block Inode number
171428 65152
But I don’t find any debugfs command which can show similar block
usage information about metadata blocks, whether it is a superblock,
or inode bitmap block or block group descriptor, etc.
Is there any way to extract the usage information of metadata blocks
in ext4 filesystem ?
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next reply other threads:[~2013-03-24 16:49 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-24 16:35 Subranshu Patel [this message]
2013-03-24 19:00 ` Type of filesystem block Theodore Ts'o
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