From: SAITOU Toshihide to...@ruby.ocn.ne.jp
Subject: Re: How can I use BD-RE with UFS on geli?
Date: Wed, 15 Apr 2009 19:45:48 +0900 (JST)
In message: 20090412.134212.26081.to...@ruby.ocn.ne.jp
SAITOU Toshihide to...@ruby.ocn.ne.jp writes:
I tried BD-RE with UFS on geli but didn't success.
What was wrong the below?
P.S. BD-RE with UFS is the same result (not usable).
1. format the disk
dvd+rw-format is failed but after this step the disk is
newfs-able.
# diskinfo -v /dev/acd0
/dev/acd0
2048# sectorsize
8796093020160 # mediasize in bytes (8.0T)
4294967295 # mediasize in sectors
# kldload atapicam
# dvd+rw-format /dev/cd0
# kldunload atapicam
# diskinfo -v /dev/acd0
/dev/acd0
2048# sectorsize
24220008448 # mediasize in bytes (23G)
11826176# mediasize in sectors
2. newfs
# newfs /dev/acd0
the following message was detected:
kernel: acd0: FAILURE - READ_BIG MEDIUM ERROR asc=0x11 ascq=0x05
3. glabel and mount
but the disk access frequently failed with these messages
(offset and length is not always the same):
kernel: acd0: FAILURE - READ_BIG MEDIUM ERROR asc=0x11 ascq=0x05
kernel: g_vfs_done():label/DailyBackup[READ(offset=2697789440,
length=16384)]error = 5
Since I wrote this message and did something, I rarely see
the READ_BIG MEDIUM ERROR error for now, almost ok, thanks.
This is something I did JFYI:
* firmware update
* gnome and related ports update
(include devel/fam to devel/gamin change)
* sector size change
# dd if=/dev/zero bs=2048 count=1 of=/dev/acd0
(new media emits READ_BIG MEDIUM ERROR, maybe inevitable(?))
# geli init -s 4096 /dev/acd0
# geli attach acd0
# dd if=/dev/zero bs=4194304 count=256 of=/dev/acd0.eli
256+0 records in
256+0 records out
1073741824 bytes transferred in 347.738376 secs (3087786 bytes/sec)
# newfs -b 65536 -S 4096 /dev/acd0.eli
# glabel label -v DailyBackup /dev/acd0.eli
# mount /dev/label/DailyBackup /od
# tar cf - foo | gzip -9 | dd bs=65536 if=/dev/stdin of=/od/foo.tgz
18697+2 records in
18697+2 records out
1225348564 bytes transferred in 733.809511 secs (1669846 bytes/sec)
The theoretical transfer speed is 4.5MB/s (288 Mbps) so this
is slow even I use the x2 BD-RE media and drive but I don't
know which part is saturated.
Thanks,
SAITOU Toshihide
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