SLES/SLED resize a reiser or ext3 file system
This document (7006860) is provided subject to the disclaimer at the end of this document.
Environment
SUSE Linux Enterprise Server 11
SUSE Linux Enterprise Desktop 10
SUSE Linux Enterprise Desktop 11
Situation
In the following situation we have a partition of roughly 1GB. We need to use an additional 1GB that is free for the file-system. This situation also assumes that the partition is not mounted. See the additional information section for the commands to run a re-size while the file-system is mounted.
Please note: that you will want to make a backup of your data. Even though this process can be run without problem you will still want to plan as if you are going to loose the data in this process.
Resolution
Disk /dev/sdb: 2147 MB, 2147483648 bytes
255 heads, 63 sectors/track, 261 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sdb1 1 131 1052226 83 Linux
Note: The start and end sector. When we delete the partition we will use the same start but the end sector will change to consume the extra space.Your data should not be affected.
linux-tleg:~ # fdisk /dev/sdb
Command (m for help): d
Selected partition 1
Command (m for help): n
Command action
e extended
p primary partition (1-4)
p
Partition number (1-4): 1
First cylinder (1-261, default 1):
Using default value 1
Last cylinder or +size or +sizeM or +sizeK (1-261, default 261):
Using default value 261
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
WARNING: Re-reading the partition table failed with error 16: Device or resource busy.
The kernel still uses the old table.
The new table will be used at the next reboot.
Syncing disks.
linux-tleg:~ # partprobe *This command will rescan the partitions and attempt to update the kernel*
*NOTE* Generally at this point you need to reboot before you can re-size the file-system!
linux-tleg:~ # fdisk -l /dev/sdb *This shows that the new end sector is 261*
Disk /dev/sdb: 2147 MB, 2147483648 bytes
255 heads, 63 sectors/track, 261 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sdb1 1 261 2096451 83 Linux
linux-tleg:/ # resize_reiserfs /dev/sdb1
resize_reiserfs 3.6.19 (2003 www.namesys.com)
ReiserFS report:
blocksize 4096
block count 524112 (263056)
free blocks 515885 (254836)
bitmap block count 16 (9)
Syncing..done
resize_reiserfs: Resizing finished successfully.
If you are using ext3 you will need to first fsck the file-system and then re-size:
linux-tleg:/ # fsck.ext3 /dev/sdb1
Then re-size
linux-tleg:/ # resize2fs /dev/sdb1
Additional Information
Disclaimer
This Support Knowledgebase provides a valuable tool for SUSE customers and parties interested in our products and solutions to acquire information, ideas and learn from one another. Materials are provided for informational, personal or non-commercial use within your organization and are presented "AS IS" WITHOUT WARRANTY OF ANY KIND.
- Document ID:7006860
- Creation Date: 16-Sep-2010
- Modified Date:28-Sep-2022
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- SUSE Linux Enterprise Desktop
- SUSE Linux Enterprise Server
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