From: Theodore Ts'o <tytso@mit.edu>
To: Ext4 Developers List <linux-ext4@vger.kernel.org>
Cc: Theodore Ts'o <tytso@mit.edu>
Subject: [PATCH 0/9 v3] meta_bg online resize patches
Date: Thu, 13 Sep 2012 18:49:07 -0400 [thread overview]
Message-ID: <1347576556-5725-1-git-send-email-tytso@mit.edu> (raw)
Here is an updated meta_bg online resize patches. This set of patches
needs to be paired with a set of e2fsprogs patches to enable online
resize. With this set of patches, we can start with a file system which
uses the resize_inode scheme of reserved gdt blocks, but after we have
consumed all of the reserved gdt blocks, the kernel will switch over to
using the meta_bg scheme of online growth.
This works both with traditional 32-bit filesystems as well newer 64-bit
file systems. As an example of the sort of on-line resizes that will
work, my testing included:
* mke2fs -t ext4 /dev/vdc 2M ; mount /dev/vdc; resize2fs /dev/vdc 8G
* mke2fs -t ext2 /dev/vdc 2M ; mount /dev/vdc; resize2fs /dev/vdc 8G
* mke2fs -t ext4 -O 64bit /dev/vdc 12T ; mount /dev/vdc; resize2fs /dev/vdc 18T
Theodore Ts'o (6):
ext4: grow the s_flex_groups array as needed when resizing
ext4: grow the s_group_info array as needed
ext4: set bg_itable_unused when resizing
ext4: convert file system to meta_bg if needed during resizing
ext4: log a resize update to the console every 10 seconds
ext4: advertise the fact that the kernel supports meta_bg resizing
Yongqiang Yang (3):
ext4: don't copy non-existent gdt blocks when resizing
ext4: avoid duplicate writes of the backup bg descriptor blocks
ext4: add online resizing support for meta_bg and 64-bit file systems
fs/ext4/ext4.h | 6 +
fs/ext4/ioctl.c | 15 ---
fs/ext4/mballoc.c | 79 ++++++-----
fs/ext4/resize.c | 386 +++++++++++++++++++++++++++++++++++++++++++++---------
fs/ext4/super.c | 50 +++++--
5 files changed, 405 insertions(+), 131 deletions(-)
--
1.7.12.rc0.22.gcdd159b
next reply other threads:[~2012-09-13 22:49 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-13 22:49 Theodore Ts'o [this message]
2012-09-13 22:49 ` [PATCH 1/9] ext4: don't copy non-existent gdt blocks when resizing Theodore Ts'o
2012-09-13 22:49 ` [PATCH 2/9] ext4: avoid duplicate writes of the backup bg descriptor blocks Theodore Ts'o
2012-09-13 22:49 ` [PATCH 3/9] ext4: grow the s_flex_groups array as needed when resizing Theodore Ts'o
2012-09-13 22:49 ` [PATCH 4/9] ext4: grow the s_group_info array as needed Theodore Ts'o
2012-09-13 22:49 ` [PATCH 5/9] ext4: add online resizing support for meta_bg and 64-bit file systems Theodore Ts'o
2012-09-13 22:49 ` [PATCH 6/9] ext4: set bg_itable_unused when resizing Theodore Ts'o
2012-09-13 22:49 ` [PATCH 7/9] ext4: convert file system to meta_bg if needed during resizing Theodore Ts'o
2012-09-13 22:49 ` [PATCH 8/9] ext4: log a resize update to the console every 10 seconds Theodore Ts'o
2012-09-13 22:49 ` [PATCH 9/9] ext4: advertise the fact that the kernel supports meta_bg resizing Theodore Ts'o
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