Re: Online resize issue with 3.13.5 & 3.15.6

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On 26/07/14 11:31, Brad Campbell wrote:
On 25/07/14 22:07, Theodore Ts'o wrote:
On Fri, Jul 25, 2014 at 07:44:07PM +0800, Brad Campbell wrote:

Appreciate you taking a look at this and I see where you are going
with it.

This patch looks good to me.  If you could give it a try, I would
appreciate it.

This looks like the same bug which was reported in Ubuntu:

https://bugs.launchpad.net/ubuntu/+source/e2fsprogs/+bug/1321958


The patch would not apply automatically to 1.42.11 but was easy enough
to apply by hand.

root@srv:~/src/e2fsprogs/e2fsprogs-1.42.11/resize# ./resize2fs -d 255
/dev/md0
resize2fs 1.42.11 (09-Jul-2014)
fs has 4007207 inodes, 1957 groups required.
fs requires 4374122900 data blocks.
With 1957 group(s), we have 63820826 blocks available.
Added 131540 extra group(s), blks_needed 4374122900, data_blocks
4356990326, last_start 4356599580
Added 523 extra group(s), blks_needed 4374122900, data_blocks
4374059350, last_start 4373440788
Added 2 extra group(s), blks_needed 4374122900, data_blocks 4374124886,
last_start 4373473426
Last group's overhead is 1430
Need 649474 data blocks in last group
Final size of last group is 650904
Estimated blocks needed: 4391437088
Extents safety margin: 2826959
Filesystem at /dev/md0 is mounted on /server; on-line resizing required
old_desc_blocks = 2768, new_desc_blocks = 2795
./resize2fs: Invalid argument While checking for on-line resizing support

[489412.650430] EXT4-fs (md0): resizing filesystem from 5804916736 to
5860149888 blocks
[489412.700282] EXT4-fs warning (device md0): verify_reserved_gdb:713:
reserved GDT 2769 missing grp 177147 (5804755665)
[489412.739676] EXT4-fs (md0): resized filesystem to 5860149888
[489413.215230] EXT4-fs warning (device md0): ext4_group_extend:1720:
can't shrink FS - resize aborted

Rebooted, did an fsck -f (was clean) and ran it again without the fs mounted.

root@srv:~/src/e2fsprogs/e2fsprogs-1.42.11/resize# ./resize2fs -d 255 /dev/md0
resize2fs 1.42.11 (09-Jul-2014)
fs has 4007359 inodes, 1957 groups required.
fs requires 4655464570 data blocks.
With 1957 group(s), we have 63820826 blocks available.
Added 140126 extra group(s), blks_needed 4655464570, data_blocks 4637219414, last_start 4636829448 Added 557 extra group(s), blks_needed 4655464570, data_blocks 4655398390, last_start 4654584520 Added 3 extra group(s), blks_needed 4655464570, data_blocks 4655496694, last_start 4654617158
Last group's overhead is 1820
Need 847412 data blocks in last group
Final size of last group is 849232
Estimated blocks needed: 4674027936
Extents safety margin: 2261777
Resizing the filesystem on /dev/md0 to 5860149888 (4k) blocks.
read_bitmaps: Memory used: 132k/763980k (49k/84k), time: 113.93/ 1.26/ 4.45
read_bitmaps: I/O read: 648MB, write: 0MB, rate: 5.69MB/s
fix_uninit_block_bitmaps 1: Memory used: 132k/763980k (49k/84k), time: 7.61/ 7.91/ 0.00 adjust_superblock: Memory used: 132k/18014398507538268k (52k/81k), time: 0.49/ 0.57/ 0.00 fix_uninit_block_bitmaps 2: Memory used: 132k/18014398507538268k (52k/81k), time: 8.10/ 8.17/ 0.00 blocks_to_move: Memory used: 132k/18014398508253624k (52k/81k), time: 0.74/ 0.50/ 0.05
Number of free blocks: 1126335202/7242495991050, Needed: 0
block_mover: Memory used: 132k/18014398508254140k (57k/76k), time: 192.51/192.28/ 0.00
block_mover: I/O read: 1MB, write: 0MB, rate: 0.01MB/s
inode_scan_and_fix: Memory used: 132k/18014398508254140k (57k/76k), time: 0.00/ 0.00/ 0.00 inode_ref_fix: Memory used: 132k/18014398508254140k (57k/76k), time: 0.00/ 0.00/ 0.00 move_itables: Memory used: 132k/18014398508254140k (57k/76k), time: 0.01/ 0.00/ 0.00 calculate_summary_stats: Memory used: 132k/18014398508254140k (57k/76k), time: 168.74/168.43/ 0.01 fix_resize_inode: Memory used: 132k/18014398508254140k (61k/72k), time: 0.00/ 0.00/ 0.00
fix_resize_inode: I/O read: 0MB, write: 3MB, rate: 1843.88MB/s
fix_sb_journal_backup: Memory used: 132k/18014398508254140k (61k/72k), time: 0.00/ 0.00/ 0.00 overall resize2fs: Memory used: 132k/18014398508254140k (61k/72k), time: 492.61/379.13/ 4.52
overall resize2fs: I/O read: 648MB, write: 13MB, rate: 1.34MB/s
The filesystem on /dev/md0 is now 5860149888 blocks long.

So it would appear to have succeeded when run offline.

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