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Re: [linux-lvm] PBs with LVM over software RAID



hey that's it and what now
do you think that i have to try with another kernel or FS
for me xfs is the best

Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010247
eax: 004ac1ab ebx: 004ac1ab ecx: 00000000 edx: 00000000
esi: d54eb320 edi: c188b928 ebp: 00958357 esp: d4eb3670
ds: 0018 es: 0018 ss: 0018
Process mount (pid: 5536, stackpage=d4eb3000)
Stack: d54eb3e0 c023fa12 00000907 d54eb320 00000000 01c02000 c0278dcd dcec43c0
00000000 d54eb320 d54eb320 00000000 01c02000 c027fa0f 00000001 d54eb320
c023fd89 c03a7254 00000000 d54eb320 00000282 00000021 00000000 00000000
Call Trace: [<c023fa12>] [<c0278dcd>] [<c027fa0f>] [<c023fd89>] [<c01a6814>]
[<c01a6a85>] [<c01a6fc1>] [<c01a6c47>] [<c01a6990>] [<c0105dac>] [<c0105f1c>]
[<c02e2140>] [<c021c10a>] [<c01fe5b8>] [<c01ff2a4>] [<c01a553e>] [<c01feb6f>]
[<c01feed8>] [<c01fc322>] [<c0201f40>] [<c01fb8f3>] [<c0202fdf>] [<c02026bf>]
[<c01a60be>] [<c02026eb>] [<c021e674>] [<c020b69c>] [<c020b843>] [<c020b871>]
[<c021cf48>] [<c01294e0>] [<c0125f0e>] [<c0125d9d>] [<c013cd72>] [<c013d01b>]
[<c013dafc>] [<c01131e0>] [<c010724c>] [<c013dd56>] [<c013dbfc>] [<c013de13>]
[<c010715b>]
Code: f7 f9 85 d2 74 24 55 51 68 c0 03 9c e2 e8 58 6c 75 dd 6a 00


>>EIP; e29c0266 <[linear]linear_make_request+36/f0> <=====
Trace; c023fa12 <__make_request+412/6d0>
Trace; c0278dcd <md_make_request+4d/80>
Trace; c027fa0f <lvm_make_request_fn+f/20>
Trace; c023fd89 <generic_make_request+b9/120>
Trace; c01a6814 <_pagebuf_page_io+1f4/370>
Trace; c01a6a85 <_page_buf_page_apply+f5/1c0>
Trace; c01a6fc1 <pagebuf_segment_apply+b1/e0>
Trace; c01a6c47 <pagebuf_iorequest+f7/160>
Trace; c01a6990 <_page_buf_page_apply+0/1c0>
Trace; c0105dac <__down+bc/d0>
Trace; c0105f1c <__down_failed+8/c>
Trace; c02e2140 <stext_lock+45b4/99d6>
Trace; c021c10a <xfsbdstrat+3a/40>
Trace; c01fe5b8 <xlog_bread+48/80>
Trace; c01ff2a4 <xlog_find_zeroed+94/1e0>
Trace; c01a553e <_pagebuf_get_object+3e/170>
Trace; c01feb6f <xlog_find_head+1f/370>
Trace; c01feed8 <xlog_find_tail+18/350>
Trace; c01fc322 <xlog_alloc_log+2a2/2e0>
Trace; c0201f40 <xlog_recover+20/c0>
Trace; c01fb8f3 <xfs_log_mount+73/b0>
Trace; c0202fdf <xfs_mountfs+55f/e20>
Trace; c02026bf <xfs_readsb+af/f0>
Trace; c01a60be <pagebuf_rele+3e/80>
Trace; c02026eb <xfs_readsb+db/f0>
Trace; c021e674 <kmem_alloc+e4/110>
Trace; c020b69c <xfs_cmountfs+4bc/590>
Trace; c020b843 <xfs_mount+63/70>
Trace; c020b871 <xfs_vfsmount+21/40>
Trace; c021cf48 <linvfs_read_super+188/270>
Trace; c01294e0 <filemap_nopage+2c0/410>
Trace; c0125f0e <handle_mm_fault+ce/e0>
Trace; c0125d9d <do_no_page+4d/f0>
Trace; c013cd72 <read_super+72/110>
Trace; c013d01b <get_sb_bdev+18b/1e0>
Trace; c013dafc <do_add_mount+1dc/290>
Trace; c01131e0 <do_page_fault+0/4b0>
Trace; c010724c <error_code+34/3c>
Trace; c013dd56 <do_mount+106/120>
Trace; c013dbfc <copy_mount_options+4c/a0>
Trace; c013de13 <sys_mount+a3/130>
Trace; c010715b <system_call+33/38>
Code; e29c0266 <[linear]linear_make_request+36/f0>
00000000 <_EIP>:
Code; e29c0266 <[linear]linear_make_request+36/f0> <=====
0: f7 f9 idiv %ecx,%eax <=====
Code; e29c0268 <[linear]linear_make_request+38/f0>
2: 85 d2 test %edx,%edx
Code; e29c026a <[linear]linear_make_request+3a/f0>
4: 74 24 je 2a <_EIP+0x2a> e29c0290 <[linear]linear_make_request+60/f0>
Code; e29c026c <[linear]linear_make_request+3c/f0>
6: 55 push %ebp
Code; e29c026d <[linear]linear_make_request+3d/f0>
7: 51 push %ecx
Code; e29c026e <[linear]linear_make_request+3e/f0>
8: 68 c0 03 9c e2 push $0xe29c03c0
Code; e29c0273 <[linear]linear_make_request+43/f0>
d: e8 58 6c 75 dd call dd756c6a <_EIP+0xdd756c6a> c0116ed0 <printk+0/1a0>
Code; e29c0278 <[linear]linear_make_request+48/f0>
12: 6a 00 push $0x0


Andreas Dilger wrote:

On Aug 31, 2001 15:08 +0200, svetljo wrote:

[root svetljo mnt]# mount -t xfs /dev/myData/Music music
Segmentation fault


Generally this is a bad sign. Either mount is segfaulting (unlikely) or you are getting an oops in the kernel. You need do run something like "dmesg | ksymoops" in order to get some useful data about where the problem is (could be xfs, LVM, or elsewhere in the kernel).

Once you have an oops, you are best off rebooting the system, because
your kernel memory may be corrupted, and cause more oopses which do
not mean anything.  If you look in /var/log/messages (or /var/log/kern.log
or some other place, depending on where kernel messages go), you can
decode the FIRST oops in the log with ksymoops.  All subsequent ones are
useless.


the LV ( lvcreate -i3 -I4 -L26G -nMusic )

the VG -> myData /dev/hdh10 /dev/linVG1/linLV1 /dev/linVG2/linLV2

/dev/hdh10 normal partition 14G
/dev/linVG1/linLV1 ->  linear LV 14G /dev/hde6 /dev/hde12
/dev/linVg2/linLV2 ->  linear LV 14G /dev/hdg1 /dev/hdg5 /dev/hdg6 /dev/hdg12


There is absolutely no point in doing this (not that it is possible to do so anyways). First of all, striping is almost never needed "for performance" unless you are normally doing very large sequential I/Os, and even so most disks today have very good sequential I/O rates (e.g. 15-30MB/s). Secondly, you _should_ be able to just create a single LV that is striped across all of the PVs above. You would likely need to build it in steps, to ensure that it is striped across the disks correctly.

Cheers, Andreas







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