--- Bob Stewart <bob@xxxxxxxxxx> wrote:
> As further data, I have discovered that the problem with the lockups only
> occurs when mkfs.xfs reports that it will create more then 16383 blocks in
> the
> new filesystem.
>
> Bob
Sorry, that should have been "logblocks". As shown below, it works unless the
partition is such that logblocks will be larger than 16383. In fdisk, that
number of cylinders anything greater than 16709. "Works" is relative, though.
When doing a copy of several gigabytes, the syslog shows periodic device
errors, which I have posted previously. Each time, it lowers the access rate
until it eventually reaches PI04.
# mkfs.xfs -f /dev/sda1
meta-data=/dev/sda1 isize=256 agcount=16, agsize=2097109 blks
= sectsz=512 attr=0
data = bsize=4096 blocks=33553744, imaxpct=25
= sunit=0 swidth=0 blks, unwritten=1
naming =version 2 bsize=4096
log =internal log bsize=4096 blocks=16383, version=1
= sectsz=512 sunit=0 blks
realtime =none extsz=65536 blocks=0, rtextents=0
Here is the fdisk screen for the above disk. If I use a figure larger than
16709 cylinders mkfs.xfs will not be successful.
Disk /dev/sda: 200.0 GB, 200049647616 bytes
255 heads, 63 sectors/track, 24321 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sda1 1 16709 134215011 83 Linux
Bob
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