Date: Tue, 21 Aug 2012 19:07:42 +0300 From: Zeus Panchenko <zeus@ibs.dn.ua> To: <freebsd-geom@FreeBSD.ORG> Cc: freebsd-fs@FreeBSD.ORG Subject: `zpool create' fails on geli ... Message-ID: <20120821190742.54449@relay.ibs.dn.ua>
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hi all,
SYNOPSIS: `zpool create poolname device.eli' available on .eli device only after dd some
random data to .eli first
I am trying to get ZFS on GELI disk ...
Here is the issue:
#> uname -a
FreeBSD 9.0-RELEASE #0 amd64
for /dev/ada2 I do:
#> geli init -K /path/key -s 4096 -a hmac/sha256 -e aes-xts /dev/ada2
Enter new passphrase:
Reenter new passphrase:
Metadata backup can be found in /var/backups/ada2.eli and
can be restored with the following command:
# geli restore /var/backups/ada2.eli /dev/ada2
#> geli attach -k /path/key /dev/ada2
now I have .eli device
#> ls -al /dev/*eli
lrwxr-xr-x 1 root wheel 8 Aug 16 15:43 /dev/ad14.eli -> ada2.eli
crw-r----- 1 root operator 0, 99 Aug 16 15:43 /dev/ada2.eli
now I am trying to create zfs on it:
> zpool create geliz /dev/ada2.eli
cannot create 'geliz': one or more devices is currently unavailable
`zpool create -f ...' gave the same result and in messages I have plenty
rows like these:
cat /var/log/messages
...
GEOM_ELI: ada2.eli: 131072 bytes corrupted at offset 444539600896.
GEOM_ELI: ada2.eli: 131072 bytes corrupted at offset 444539863040.
GEOM_ELI: ada2.eli: 8192 bytes corrupted at offset 270336.
GEOM_ELI: ada2.eli: 8192 bytes corrupted at offset 444539609088.
GEOM_ELI: ada2.eli: 8192 bytes corrupted at offset 444539871232.
GEOM_ELI: ada2.eli: 4096 bytes corrupted at offset 444540313600.
GEOM_ELI: ada2.eli: 8192 bytes corrupted at offset 65536.
GEOM_ELI: ada2.eli: 8192 bytes corrupted at offset 8192.
GEOM_ELI: ada2.eli: 8192 bytes corrupted at offset 0.
GEOM_ELI: ada2.eli: 8192 bytes corrupted at offset 262144.
...
but after
#> dd if=/dev/random of=/dev/ada2.eli bs=10m count=10
10+0 records in
10+0 records out
104857600 bytes transferred in 7.124000 secs (14718922 bytes/sec)
I was able to do it!
#> zpool create geliz /dev/ada2.eli
pool was successfully created
but pool status looks weird for me:
#> zpool status geliz
pool: geliz
state: ONLINE
status: One or more devices has experienced an unrecoverable error. An
attempt was made to correct the error. Applications are unaffected.
action: Determine if the device needs to be replaced, and clear the errors
using 'zpool clear' or replace the device with 'zpool replace'.
see: http://www.sun.com/msg/ZFS-8000-9P
scan: none requested
config:
NAME STATE READ WRITE CKSUM
geliz ONLINE 0 0 0
ada2.eli ONLINE 10 0 0
errors: No known data errors
after `zscub' and `zpool clear' I have clean pool:
#> zpool status geliz
pool: geliz
state: ONLINE
scan: scrub repaired 0 in 0h0m with 0 errors on Thu Aug 16 16:36:44 2012
config:
NAME STATE READ WRITE CKSUM
geliz ONLINE 0 0 0
ada2.eli ONLINE 0 0 0
errors: No known data errors
QUESTION:
1. Am I correct to think I really have correct ZFS over GELI set?
2. Why it was needed to dd? What am I missing here, please?
may somebody explain that for me please ...?
--
Zeus V. Panchenko jid:zeus@im.ibs.dn.ua
IT Dpt., I.B.S. LLC GMT+2 (EET)
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