I recently added a pair of $109 Samsung terabyte drives to my server.
I foematted them with ext4 on a Celeron 430 system running 64 bit
Rawhide. What ended as /dev/sdd1 was a single partition on its
drive. I copied files to it while still on the Celeron system, then
installed the drives on the server and continued copying files to
it until it was completely full.
I was amazed that a forced fsck.ext4 finished in less than two minutes!
The lergest ext3 partitions I have ever used are half that size and take
at least an order of magnitude longer to fsck.
How confident are we that fsck.ext4 is checking everything it needs
to check? In general, is ext4 really ready for "production"?
[root@omen dev]# time fsck.ext4 -f sdd1
e2fsck 1.41.3 (12-Oct-2008)
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
sdd1: 631692/61054976 files (15.3% non-contiguous), 244190000/244190000
blocks
real 1m35.160s
user 0m29.021s
sys 0m5.601s
[root@omen dev]# time fsck.ext4 -f sde5
e2fsck 1.41.3 (12-Oct-2008)
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
sde5: 11/59342848 files (0.0% non-contiguous), 3775665/237368399 blocks
real 0m42.811s
user 0m38.485s
sys 0m0.290s
--
Chuck Forsberg caf@xxxxxxxx www.omen.com 503-614-0430
Developer of Industrial ZMODEM(Tm) for Embedded Applications
Omen Technology Inc "The High Reliability Software"
10255 NW Old Cornelius Pass Portland OR 97231 FAX 629-0665
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