Re: shrink ext3 filesystem using e2fsprogs and fdisk
thanks for replies! Is it possible to slide partition using the tools included with e2fsprogs package as well? The e2fsprogs tools only deal with the needs specific to ext[234] partitions. Sliding a partition can be done for any partition you like with `dd'. Stefan -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/jwvehscdefn.fsf-monnier+gmane.linux.debian.u...@gnu.org
Re: shrink ext3 filesystem using e2fsprogs and fdisk
Stefan: I'm afraid you can't use dd for this because as far as I know dd(1) reads and writes one block at a time and in case new position for file system overlaps with the present one, using dd you will start overwriting the end of the file system with the readings from the start of the file system. In addition, both parted and Gparted don't have dd as a dependency. However, it should be doable if current and new position don't overlap using the skip= and seek= options of dd..or how did you think? Jochen, Darac: here is what Gparted did: GParted 0.6.2 Libparted 2.3 Move /dev/sda9 to the right and shrink it from 904.37 GiB to 611.40 GiB 06:02:27( SUCCESS ) calibrate /dev/sda9 00:00:00( SUCCESS ) path: /dev/sda9 start: 56924160 end: 1953523711 size: 1896599552 (904.37 GiB) check file system on /dev/sda9 for errors and (if possible) fix them 00:02:16( SUCCESS ) e2fsck -f -y -v /dev/sda9 Pass 1: Checking inodes, blocks, and sizes Pass 2: Checking directory structure Pass 3: Checking directory connectivity Pass 4: Checking reference counts Pass 5: Checking group summary information 308 inodes used (0.00%) 18 non-contiguous files (5.8%) 0 non-contiguous directories (0.0%) # of inodes with ind/dind/tind blocks: 20/9/0 3363494 blocks used (2.57%) 0 bad blocks 1 large file 169 regular files 130 directories 0 character device files 0 block device files 0 fifos 0 links 0 symbolic links (0 fast symbolic links) 0 sockets 299 files e2fsck 1.41.12 (17-May-2010) shrink file system 00:01:31( SUCCESS ) resize2fs /dev/sda9 641099775K Resizing the filesystem on /dev/sda9 to 160274943 (4k) blocks. The filesystem on /dev/sda9 is now 160274943 blocks long. resize2fs 1.41.12 (17-May-2010) shrink partition from 904.37 GiB to 611.40 GiB 00:00:01( SUCCESS ) old start: 56924160 old end: 1953523711 old size: 1896599552 (904.37 GiB) new start: 56924160 new end: 1339123711 new size: 1282199552 (611.40 GiB) check file system on /dev/sda9 for errors and (if possible) fix them 00:02:47( SUCCESS ) e2fsck -f -y -v /dev/sda9 Pass 1: Checking inodes, blocks, and sizes Pass 2: Checking directory structure Pass 3: Checking directory connectivity Pass 4: Checking reference counts Pass 5: Checking group summary information 308 inodes used (0.00%) 18 non-contiguous files (5.8%) 0 non-contiguous directories (0.0%) # of inodes with ind/dind/tind blocks: 20/9/0 3821982 blocks used (2.38%) 0 bad blocks 1 large file 169 regular files 130 directories 0 character device files 0 block device files 0 fifos 0 links 0 symbolic links (0 fast symbolic links) 0 sockets 299 files e2fsck 1.41.12 (17-May-2010) grow file system to fill the partition 00:01:03( SUCCESS ) resize2fs /dev/sda9 Resizing the filesystem on /dev/sda9 to 160274944 (4k) blocks. The filesystem on /dev/sda9 is now 160274944 blocks long. resize2fs 1.41.12 (17-May-2010) check file system on /dev/sda9 for errors and (if possible) fix them 00:02:46( SUCCESS ) e2fsck -f -y -v /dev/sda9 Pass 1: Checking inodes, blocks, and sizes Pass 2: Checking directory structure Pass 3: Checking directory connectivity Pass 4: Checking reference counts Pass 5: Checking group summary information 308 inodes used (0.00%) 18 non-contiguous files (5.8%) 0 non-contiguous directories (0.0%) # of inodes with ind/dind/tind blocks: 20/9/0 3821982 blocks used (2.38%) 0 bad blocks 1 large file 169 regular files 130 directories 0 character device files 0 block device files 0 fifos 0 links 0 symbolic links (0 fast symbolic links) 0 sockets 299 files e2fsck 1.41.12 (17-May-2010) grow partition from 611.40 GiB to 904.37 GiB 00:00:02( SUCCESS ) old start: 56924160 old end: 1339123711 old size: 1282199552 (611.40 GiB) new start: 56924160 new end: 1953523711 new size: 1896599552 (904.37 GiB) move file system to the right 05:48:52( SUCCESS ) perform read-only test 01:54:58( SUCCESS ) using internal algorithm read 611.40 GiB finding optimal block size read 16.00 MiB using a block size of 2.00 MiB 00:00:00( SUCCESS ) 16.00 MiB of 16.00 MiB read 0.215304 seconds read 16.00 MiB using a block size of 4.00 MiB 00:00:00( SUCCESS ) 16.00 MiB of 16.00 MiB read 0.250469 seconds read 16.00 MiB using a block size of 8.00 MiB 00:00:01( SUCCESS ) 16.00 MiB of 16.00 MiB read 0.215766 seconds read 16.00 MiB using a block size of 16.00 MiB 00:00:00( SUCCESS ) 16.00 MiB of 16.00 MiB read 0.253064 seconds optimal block size is 2.00 MiB read 611.34 GiB using a block size of 2.00 MiB 01:54:57( SUCCESS ) 611.34 GiB of 611.34 GiB read 611.40 GiB (656486170624 B) read perform real move 03:53:54( SUCCESS ) using internal algorithm copy 611.40 GiB finding optimal block size copy 16.00
Re: shrink ext3 filesystem using e2fsprogs and fdisk
Martin T: Is it possible to make partition smaller starting from the beginning? No. If yes, do I need to somehow start file system from the end of the partition? AFAIK that's not possible. The solution for your problem (which involves initial reformatting) is LVM. J. -- There is no justice in road accidents. [Agree] [Disagree] http://www.slowlydownward.com/NODATA/data_enter2.html signature.asc Description: Digital signature
Re: shrink ext3 filesystem using e2fsprogs and fdisk
On Sun, Mar 25, 2012 at 10:50:27PM +, Martin T wrote: I have a 500GB((131072000*4096)/1024^3) ext3 filesystem: [cut] Is it possible to make partition smaller starting from the beginning? If yes, do I need to somehow start file system from the end of the partition? Not directly. Try installing gparted (package: gparted). This will give you a graphical interface which will allow you to resize the partition as you're wanting. You will probably become aware that, no, taking space off the beginning of the partition is not possible, but it IS possible to take space off the END of the partition and then slide the partition towards the end of the space. The same is possible (I think) using the CLI parted, if you don't have X. Note also that ext3 does NOT support online shrinking (you can make it larger, but to make it smaller you MUST umount it). -- Darac Marjal -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/20120326142808.ga18...@darac.org.uk
Re: shrink ext3 filesystem using e2fsprogs and fdisk
Jochen, Darac: thanks for replies! Is it possible to slide partition using the tools included with e2fsprogs package as well? Or is the GNU Parted only option here if I want to make changes over CLI? regards, martin Kuupäeval 26. märts 2012 17:28 kirjutas Darac Marjal mailingl...@darac.org.uk: On Sun, Mar 25, 2012 at 10:50:27PM +, Martin T wrote: I have a 500GB((131072000*4096)/1024^3) ext3 filesystem: [cut] Is it possible to make partition smaller starting from the beginning? If yes, do I need to somehow start file system from the end of the partition? Not directly. Try installing gparted (package: gparted). This will give you a graphical interface which will allow you to resize the partition as you're wanting. You will probably become aware that, no, taking space off the beginning of the partition is not possible, but it IS possible to take space off the END of the partition and then slide the partition towards the end of the space. The same is possible (I think) using the CLI parted, if you don't have X. Note also that ext3 does NOT support online shrinking (you can make it larger, but to make it smaller you MUST umount it). -- Darac Marjal -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/20120326142808.ga18...@darac.org.uk -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/CAJx5YvEnEV4+xCPZVLm-oH0ZUsgPBDYEK0=xpm7mhoscktm...@mail.gmail.com
shrink ext3 filesystem using e2fsprogs and fdisk
I have a 500GB((131072000*4096)/1024^3) ext3 filesystem: root@debian:~#dumpe2fs /dev/sda9 | egrep Block count|Block size dumpe2fs 1.41.12 (17-May-2010) Block count: 131072000 Block size: 4096 root@debian:~# ..on a 904GB((1953523711-56924160)*512)/(1024^3) partition(sda9): root@debian:~#fdisk -cul /dev/sda Disk /dev/sda: 1000.2 GB, 1000204886016 bytes 255 heads, 63 sectors/track, 121601 cylinders, total 1953525168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00062a0f Device Boot Start End Blocks Id System /dev/sda1 *2048 684031 340992 83 Linux /dev/sda2 686078 1953523711 9764188175 Extended /dev/sda5 68608018262015 8787968 83 Linux /dev/sda61826406424121343 2928640 83 Linux /dev/sda7241233925614182316009216 82 Linux swap / Solaris /dev/sda85614387256922111 389120 83 Linux /dev/sda956924160 1953523711 948299776 83 Linux root@debian:~# At the moment everything works, but if I shrink the size of the /dev/sda9 partition from the beginning of the partition like this(sda9 is now 693GB which is more than enough to hold the 500GB file system): root@debian:~#fdisk -cul /dev/sda Disk /dev/sda: 1000.2 GB, 1000204886016 bytes 255 heads, 63 sectors/track, 121601 cylinders, total 1953525168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00062a0f Device Boot Start End Blocks Id System /dev/sda1 *2048 684031 340992 83 Linux /dev/sda2 686078 1953523711 9764188175 Extended /dev/sda5 68608018262015 8787968 83 Linux /dev/sda61826406424121343 2928640 83 Linux /dev/sda7241233925614182316009216 82 Linux swap / Solaris /dev/sda85614387256922111 389120 83 Linux /dev/sda9 5 1953523711 726761856 83 Linux root@debian:~# ..then file system is broken: root@debian:~#dumpe2fs /dev/sda9 dumpe2fs 1.41.12 (17-May-2010) dumpe2fs: Bad magic number in super-block while trying to open /dev/sda9 Couldn't find valid filesystem superblock. root@debian:~# Is it possible to make partition smaller starting from the beginning? If yes, do I need to somehow start file system from the end of the partition? regards, martin -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/CAJx5YvHKWV_b5X_G=j4dG7F=av8tk-cwdrqetwe+iowuzpk...@mail.gmail.com
