[dm-devel] dm-cache fs corruption

Fri Nov 29 15:06:17 UTC 2013

Ok, I compiled it and will test if it works.

When I try to make my cache with blocksize smaller than 8192  I get

# dmsetup  create storage --table '0 40963653632 cache /dev/sdc1 /dev/sdc2
/dev/sdb1 4096 1 writeback default 0'
device-mapper: reload ioctl on storage failed: Cannot allocate memory
Command failed

dnesg:

[  664.940597] device-mapper: cache-policy-mq: version 1.1.0 loaded
[  665.002924] ------------[ cut here ]------------
[  665.002943] WARNING: CPU: 0 PID: 18271 at mm/page_alloc.c:2484
__alloc_pages_nodemask+0x73d/0x820()
[  665.002945] Modules linked in: dm_cache_mq dm_cache dm_bio_prison
dm_persistent_data dm_bufio ipv6 bonding coretemp ixgbe i7core_edac
edac_core kvm processor pcspkr hed button bnx2 dcdbas dca mdio ehci_pci
thermal_sys microcode joydev sha256_generic libiscsi scsi_transport_iscsi
tg3 ptp pps_core libphy e1000 fuse nfs lockd sunrpc jfs multipath linear
raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor xor
async_tx raid6_pq raid1 raid0 dm_snapshot dm_crypt dm_mirror dm_region_hash
dm_log dm_mod hid_sunplus hid_sony hid_samsung hid_pl hid_petalynx
hid_gyration sl811_hcd usbhid ohci_hcd uhci_hcd usb_storage ehci_hcd
usbcore usb_common mpt2sas raid_class aic94xx libsas lpfc crc_t10dif
crct10dif_common qla2xxx megaraid_sas megaraid_mbox megaraid_mm megaraid
aacraid sx8 DAC960 cciss 3w_9xxx 3w_xxxx mptsas scsi_transport_sas mptfc
scsi_transport_fc scsi_tgt mptspi mptscsih mptbase atp870u dc395x qla1280
imm parport dmx3191d sym53c8xx gdth advansys initio BusLogic arcmsr aic7xxx
aic79xx scsi_transport_spi sg pdc_adma sata_inic162x sata_mv ata_piix ahci
libahci sata_qstor sata_vsc sata_uli sata_sis sata_sx4 sata_nv sata_via
sata_svw sata_sil24 sata_sil sata_promise pata_sl82c105 pata_cs5530
pata_cs5520 pata_via pata_jmicron pata_marvell pata_sis pata_netcell
pata_sc1200 pata_pdc202xx_old pata_triflex pata_atiixp pata_opti pata_amd
pata_ali pata_it8213 pata_ns87415 pata_ns87410 pata_serverworks pata_artop
pata_it821x pata_optidma pata_hpt3x2n pata_hpt3x3 pata_hpt37x pata_hpt366
pata_cmd64x pata_efar pata_rz1000 pata_sil680 pata_radisys pata_pdc2027x
pata_mpiix libata
[  665.003077] CPU: 0 PID: 18271 Comm: dmsetup Not tainted 3.12.0-rc5+ #1
[  665.003079] Hardware name: Dell Inc. PowerEdge R510/0DPRKF, BIOS 1.5.3
10/25/2010
[  665.003082]  00000000000009b4 ffff881fada458f8 ffffffff81595198
00000000000009b4
[  665.003085]  0000000000000000 ffff881fada45938 ffffffff81043a62
ffff881fada45918
[  665.003088]  0000000000000000 ffff881fae8a0000 0000000000000000
0000000000000002
[  665.003092] Call Trace:
[  665.003101]  [<ffffffff81595198>] dump_stack+0x49/0x61
[  665.003107]  [<ffffffff81043a62>] warn_slowpath_common+0x82/0xb0
[  665.003111]  [<ffffffff81043aa5>] warn_slowpath_null+0x15/0x20
[  665.003114]  [<ffffffff810c595d>] __alloc_pages_nodemask+0x73d/0x820
[  665.003120]  [<ffffffffa14405b7>] ? mq_create+0x187/0x3a0 [dm_cache_mq]
[  665.003124]  [<ffffffff810c5ac2>] __get_free_pages+0x12/0x50
[  665.003130]  [<ffffffff810f69cb>] __kmalloc+0xeb/0xf0
[  665.003134]  [<ffffffffa1440767>] mq_create+0x337/0x3a0 [dm_cache_mq]
[  665.003139]  [<ffffffffa1436faa>] dm_cache_policy_create+0x4a/0xcc
[dm_cache]
[  665.003143]  [<ffffffffa14339d1>] cache_ctr+0x4a1/0xd40 [dm_cache]
[  665.003152]  [<ffffffffa065dbb8>] ? dm_split_args+0x78/0x140 [dm_mod]
[  665.003159]  [<ffffffffa065ddba>] dm_table_add_target+0x13a/0x390
[dm_mod]
[  665.003166]  [<ffffffffa0660eb0>] table_load+0xd0/0x330 [dm_mod]
[  665.003173]  [<ffffffffa0660de0>] ? table_clear+0xd0/0xd0 [dm_mod]
[  665.003179]  [<ffffffffa0662032>] ctl_ioctl+0x1d2/0x410 [dm_mod]
[  665.003187]  [<ffffffff8103a718>] ? __do_page_fault+0x208/0x4e0
[  665.003193]  [<ffffffffa066227e>] dm_ctl_ioctl+0xe/0x20 [dm_mod]
[  665.003198]  [<ffffffff8110bd2e>] do_vfs_ioctl+0x8e/0x4e0
[  665.003202]  [<ffffffff810fbc09>] ? ____fput+0x9/0x10
[  665.003205]  [<ffffffff8110c1d2>] SyS_ioctl+0x52/0x80
[  665.003211]  [<ffffffff815996f9>] system_call_fastpath+0x16/0x1b
[  665.003213] ---[ end trace 2afe5f836777e03f ]---
[  665.008704] device-mapper: table: 253:0: cache: Error creating cache's
policy
[  665.008712] device-mapper: ioctl: error adding target to table

# blockdev --report
RO    RA   SSZ   BSZ   StartSec            Size   Device
rw   256   512  4096          0     26843414528   /dev/sda
rw   256   512  4096       2048      4094689280   /dev/sda1
rw   256   512  4096    7999488     22746759168   /dev/sda2
rw   256   512  4096          0  20973392756736   /dev/sdb
rw   256   512  4096       2048  20973390659584   /dev/sdb1
rw   256   512  4096          0   2397799710720   /dev/sdc
rw   256   512  4096       2048      1023410176   /dev/sdc1
rw   256   512  4096    2000896   2396774203392   /dev/sdc2

regards.

On Fri, Nov 29, 2013 at 3:34 PM, Vladimir Smolensky <arizal at gmail.com>wrote:

> This is complete kernel, right?
>
>
> On Thu, Nov 28, 2013 at 7:28 PM, Joe Thornber <thornber at redhat.com> wrote:
>
>> On Thu, Nov 28, 2013 at 06:50:39PM +0200, Vladimir Smolensky wrote:
>> > Hello, I would like to test the latest dm-cache available to see if the
>> > problem I was having still exists. Where can I get this code?
>>
>> My latest stable code lives in the 'thin-dev' branch of my github tree:
>>
>> https://github.com/jthornber/linux-2.6/tree/thin-dev
>>
>> This has the latest versions of both the thin-provisioning and cache
>> targets, and will shortly have the era target too.
>>
>>
>> - Joe
>>
>> --
>> dm-devel mailing list
>> dm-devel at redhat.com
>> https://www.redhat.com/mailman/listinfo/dm-devel
>>
>
>
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