Date: Thu, 5 May 2011 12:25:24 -0500 From: Kevin Day <toasty@dragondata.com> To: freebsd-fs@freebsd.org Subject: "gpart show" stuck in loop Message-ID: <C2BDEBA9-DD29-4B0B-B125-89B93F5997BA@dragondata.com>
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We've had one of our boxes getting stuck with "gpart show" (called from =
rc startup scripts) consuming 100% cpu after each reboot. Manually =
running "gpart show" gives me:
# gpart show |more
=3D> 63 715571136 amrd0 MBR (341G)
63 715567167 1 freebsd [active] (341G)
715567230 3969 - free - (1.9M)
=3D> 0 715567167 amrd0s1 BSD (341G)
0 696254464 1 freebsd-ufs (332G)
696254464 19312703 2 freebsd-swap (9.2G)
=3D> 63 5860573110 da0 MBR (2.7T)
63 2147472747 1 freebsd [active] (1.0T)
2147472810 2147472810 2 freebsd [active] (1.0T)
4294945620 -2729352721 3 freebsd [active] ()
1565592899 581879911 - free - (277G)
2147472810 2147472810 2 freebsd [active] (1.0T)
4294945620 -2729352721 3 freebsd [active] ()
1565592899 581879911 - free - (277G)
2147472810 2147472810 2 freebsd [active] (1.0T)
4294945620 -2729352721 3 freebsd [active] ()
1565592899 581879911 - free - (277G)
2147472810 2147472810 2 freebsd [active] (1.0T)
4294945620 -2729352721 3 freebsd [active] ()
1565592899 581879911 - free - (277G)
2147472810 2147472810 2 freebsd [active] (1.0T)
4294945620 -2729352721 3 freebsd [active] ()
1565592899 581879911 - free - (277G)
(repeating forever)
I'm guessing something is corrupt in the partition table. I'm happy to =
file a PR on this, but I can only leave this untouched for a day or two =
max before I'm going to have to wipe this and start over for a new =
customer who needs this storage array. Is there anything anyone could =
suggest looking at or preserving before I'm forced to delete this?=20
The storage system came to me configured like this, I don't know what =
the previous owner was attempting to do, or how they ended up with the =
partitions like this.
-- Kevin
da0 at mpt0 bus 0 scbus0 target 0 lun 0
da0: <APPLE Xserve RAID 1.51> Fixed Direct Access SCSI-5 device=20
da0: 100.000MB/s transfers
da0: Command Queueing enabled
da0: 2861608MB (5860573184 512 byte sectors: 255H 63S/T 364803C)
# fdisk da0
******* Working on device /dev/da0 *******
parameters extracted from in-core disklabel are:
cylinders=3D364803 heads=3D255 sectors/track=3D63 (16065 blks/cyl)
Figures below won't work with BIOS for partitions not in cyl 1
parameters to be used for BIOS calculations are:
cylinders=3D364803 heads=3D255 sectors/track=3D63 (16065 blks/cyl)
Media sector size is 512
Warning: BIOS sector numbering starts with sector 1
Information from DOS bootblock is:
The data for partition 1 is:
sysid 165 (0xa5),(FreeBSD/NetBSD/386BSD)
start 63, size 2147472747 (1048570 Meg), flag 80 (active)
beg: cyl 0/ head 1/ sector 1;
end: cyl 1023/ head 254/ sector 63
The data for partition 2 is:
sysid 165 (0xa5),(FreeBSD/NetBSD/386BSD)
start 2147472810, size 2147472810 (1048570 Meg), flag 80 (active)
beg: cyl 1023/ head 255/ sector 63;
end: cyl 1023/ head 254/ sector 63
The data for partition 3 is:
sysid 165 (0xa5),(FreeBSD/NetBSD/386BSD)
start 4294945620, size 1565614575 (764460 Meg), flag 80 (active)
beg: cyl 1023/ head 255/ sector 63;
end: cyl 1023/ head 165/ sector 59
The data for partition 4 is:
<UNUSED>
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