Dave Kleikamp wrote:
On Fri, 2010-06-04 at 12:20 -0700, Sandon Van Ness wrote:
Thanks a ton for this! I formatted my 32+ TiB partition without any
issues and the fsck ran ok as well. Just to test I went ahead and tried
creating and fscking a 511 TiB sparse file so it was just under 512TiB
and the mkfs seemed to run ok but the fsck failed:
Try the attached patch.
Shaggy
It looks like that fixed it so its working with a 511 TiB sparse file
but it fails at 512 TiB or is that expected? It does look like its
properly getting past 128 TiB now/
511 TiB:
sabayonx86-64 / # fsck.jfs -f -v /jfs_511tb.sparse
fsck.jfs version 1.1.14, Jun 5 2010
processing started: 6/5/2010 7.33.41
The current device is: /jfs_511tb.sparse
Open(...READ/WRITE EXCLUSIVE...) returned rc = 0
Primary superblock is valid.
The type of file system for the device is JFS.
Block size in bytes: 4096
Filesystem size in blocks: 137170518016
**Phase 0 - Replay Journal Log
LOGREDO: Log already redone!
logredo returned rc = 0
**Phase 1 - Check Blocks, Files/Directories, and Directory Entries
**Phase 2 - Count links
**Phase 3 - Duplicate Block Rescan and Directory Connectedness
**Phase 4 - Report Problems
**Phase 5 - Check Connectivity
**Phase 6 - Perform Approved Corrections
**Phase 7 - Rebuild File/Directory Allocation Maps
**Phase 8 - Rebuild Disk Allocation Maps
Filesystem Summary:
Blocks in use for inodes: 8
Inode count: 64
File count: 0
Directory count: 1
Block count: 137170518016
Free block count: 137149538804
548682072064 kilobytes total disk space.
0 kilobytes in 1 directories.
0 kilobytes in 0 user files.
0 kilobytes in extended attributes
0 kilobytes in access control lists
83916848 kilobytes reserved for system use.
548598155216 kilobytes are available for use.
Filesystem is clean.
All observed inconsistencies have been repaired.
Filesystem has been marked clean.
**** Filesystem was modified. ****
processing terminated: 6/5/2010 7:56:18 with return code: 0 exit code: 0.
512 TiB:
fsck.jfs version 1.1.14, Jun 5 2010
processing started: 6/5/2010 5.2.35
The current device is: /jfs_512tb.sparse
Block size in bytes: 4096
Filesystem size in blocks: 137438953472
**Phase 0 - Replay Journal Log
**Phase 1 - Check Blocks, Files/Directories, and Directory Entries
Errors detected in the Primary File/Directory Allocation Table.
Errors detected in the Secondary File/Directory Allocation Table.
CANNOT CONTINUE.
I forgot to run the 512 TiB with the verbose option though so I re-run
it if it could use some more verboseness and was not expected to fail @
512TiB. About 60 gigabytes of metadata must be written when creating
file-systems with sparse files of this size and its not totally
sequential (my regular disk chumed along at only 20 megabytes/sec) so I
know testing this on a regular drive can be extremely slow but the mkfs
doesn't take too long on my raid array so I can definitely test some
larger sizes (even up to 4 PiB). Of course copying back my data from my
opensolaris server after creaing my 36 TiB partition which kept its
speed @ 100 megabytes/sec didn't help with the mkfs and fsck times:
Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s avgrq-sz avgqu-sz await svctm
%util
sda 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
sda1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
sdc 0.00 0.00 767.50 639.90 92.22 91.61 267.50 3.03 2.15 0.43 59.97
sdc1 0.00 0.00 767.50 639.90 92.22 91.61 267.50 3.03 2.15 0.43 59.97
sdb 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
sdd 0.00 214.70 3.30 775.90 0.01 107.74 283.21 5.85 7.50 0.26 20.18
sdd1 0.00 214.70 3.30 775.90 0.01 107.74 283.21 5.85 7.50 0.26 20.18
I know http://jfs.sourceforge.net/project/pub/jfs.pdf said the max size
is 512 TiB when dealing with 512 byte blocks and its 4 PB when dealing
with 4096 byte blocks so I would think that it should be able to do 512
TiB as it is using 4096 bytes as the block size.
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