[Samba] CTDB and locking issues in 4.4.6 (Classic domain)
Alex Crow
acrow at integrafin.co.uk
Thu Oct 20 13:27:35 UTC 2016
On 20/10/16 14:10, Amitay Isaacs wrote:
> On Thu, Oct 20, 2016 at 8:09 PM, Alex Crow via samba
> <samba at lists.samba.org <mailto:samba at lists.samba.org>> wrote:
>
> Hi list
>
> We recently upgraded our fileservers from Centos supplied 4.2.10
> to Sernet 4.4.6, and then our DCs from 3.6.x to 4.4.6.
>
> It seems that since then we've had problems with locks not being
> obeyed on all nodes - they only seem to work when a second client
> opens a file on the same node as the first client.
>
> For example, when a user opens an Excel file I will see something
> like this with smbstatus -L:
>
> 1:30578 1608 DENY_WRITE 0x2019f RDWR NONE
> /sharename path/foo.xls
>
> This output is identical on all nodes, so smbstatus at least can
> see the locks.
>
> However if another client opens the same XLS file, they only get
> the "This file is in use by <username>" if they happen to hit the
> same server as the first user. If they happen to land on another
> server they don't get this prompt, and if the original user
> modifies the file, when they try to save their changes they get
> prompted whether they want to overwrite. I'm sure we didn't have
> this issue before the upgrade.
>
> CTDB status reports as OK on all nodes.
>
> Our filesystem passes ping_pong in both read and read/write, data
> increment behaving as expected.
>
> We have a lot of users trying to edit Excel and Word docs (Office
> 2010) so this is happening quite often.
>
> Best regards,
>
> Alex
>
>
> It appears that samba is still using local databases and not clustered
> databases.
>
> What does "ctdb getdbmap" list? Is locking.tdb a clustered database?
> Do you have "clustering = yes" in smb.conf on all the nodes?
>
> Amitay.
Hi Amitay,
Here you go:
Server 1:
# ctdb getdbmap
Number of databases:20
dbid:0x4d2a432b name:g_lock.tdb path:/var/lib/ctdb/g_lock.tdb.1
dbid:0x2d608c16 name:netlogon_creds_cli.tdb
path:/var/lib/ctdb/netlogon_creds_cli.tdb.1 READONLY
dbid:0x9ec2a880 name:serverid.tdb path:/var/lib/ctdb/serverid.tdb.1
dbid:0x6afb8c09 name:dbwrap_watchers.tdb
path:/var/lib/ctdb/dbwrap_watchers.tdb.1
dbid:0x521b7544 name:smbXsrv_version_global.tdb
path:/var/lib/ctdb/smbXsrv_version_global.tdb.1
dbid:0x6b06a26d name:smbXsrv_session_global.tdb
path:/var/lib/ctdb/smbXsrv_session_global.tdb.1
dbid:0x68c12c2c name:smbXsrv_tcon_global.tdb
path:/var/lib/ctdb/smbXsrv_tcon_global.tdb.1
dbid:0x4e66c2b2 name:brlock.tdb path:/var/lib/ctdb/brlock.tdb.1
dbid:0x7a19d84d name:locking.tdb path:/var/lib/ctdb/locking.tdb.1
dbid:0x06916e77 name:leases.tdb path:/var/lib/ctdb/leases.tdb.1
dbid:0x66f71b8c name:smbXsrv_open_global.tdb
path:/var/lib/ctdb/smbXsrv_open_global.tdb.1
dbid:0x5bcfcbd7 name:printer_list.tdb path:/var/lib/ctdb/printer_list.tdb.1
dbid:0x477d2e20 name:smbXsrv_client_global.tdb
path:/var/lib/ctdb/smbXsrv_client_global.tdb.1
dbid:0x2ca251cf name:account_policy.tdb
path:/var/lib/ctdb/persistent/account_policy.tdb.1 PERSISTENT
dbid:0x3ef19640 name:passdb.tdb
path:/var/lib/ctdb/persistent/passdb.tdb.1 PERSISTENT
dbid:0xc3078fba name:share_info.tdb
path:/var/lib/ctdb/persistent/share_info.tdb.1 PERSISTENT
dbid:0x6cf2837d name:registry.tdb
path:/var/lib/ctdb/persistent/registry.tdb.1 PERSISTENT
dbid:0xa1413774 name:group_mapping.tdb
path:/var/lib/ctdb/persistent/group_mapping.tdb.1 PERSISTENT
dbid:0x7132c184 name:secrets.tdb
path:/var/lib/ctdb/persistent/secrets.tdb.1 PERSISTENT
dbid:0x6645c6c4 name:ctdb.tdb path:/var/lib/ctdb/persistent/ctdb.tdb.1
PERSISTENT
Server 2:
Number of databases:20
dbid:0x4d2a432b name:g_lock.tdb path:/var/lib/ctdb/g_lock.tdb.0
dbid:0x2d608c16 name:netlogon_creds_cli.tdb
path:/var/lib/ctdb/netlogon_creds_cli.tdb.0 READONLY
dbid:0x9ec2a880 name:serverid.tdb path:/var/lib/ctdb/serverid.tdb.0
dbid:0x6afb8c09 name:dbwrap_watchers.tdb
path:/var/lib/ctdb/dbwrap_watchers.tdb.0
dbid:0x521b7544 name:smbXsrv_version_global.tdb
path:/var/lib/ctdb/smbXsrv_version_global.tdb.0
dbid:0x6b06a26d name:smbXsrv_session_global.tdb
path:/var/lib/ctdb/smbXsrv_session_global.tdb.0
dbid:0x68c12c2c name:smbXsrv_tcon_global.tdb
path:/var/lib/ctdb/smbXsrv_tcon_global.tdb.0
dbid:0x4e66c2b2 name:brlock.tdb path:/var/lib/ctdb/brlock.tdb.0
dbid:0x7a19d84d name:locking.tdb path:/var/lib/ctdb/locking.tdb.0
dbid:0x06916e77 name:leases.tdb path:/var/lib/ctdb/leases.tdb.0
dbid:0x66f71b8c name:smbXsrv_open_global.tdb
path:/var/lib/ctdb/smbXsrv_open_global.tdb.0
dbid:0x5bcfcbd7 name:printer_list.tdb path:/var/lib/ctdb/printer_list.tdb.0
dbid:0x477d2e20 name:smbXsrv_client_global.tdb
path:/var/lib/ctdb/smbXsrv_client_global.tdb.0
dbid:0x2ca251cf name:account_policy.tdb
path:/var/lib/ctdb/persistent/account_policy.tdb.0 PERSISTENT
dbid:0x3ef19640 name:passdb.tdb
path:/var/lib/ctdb/persistent/passdb.tdb.0 PERSISTENT
dbid:0xc3078fba name:share_info.tdb
path:/var/lib/ctdb/persistent/share_info.tdb.0 PERSISTENT
dbid:0x6cf2837d name:registry.tdb
path:/var/lib/ctdb/persistent/registry.tdb.0 PERSISTENT
dbid:0xa1413774 name:group_mapping.tdb
path:/var/lib/ctdb/persistent/group_mapping.tdb.0 PERSISTENT
dbid:0x7132c184 name:secrets.tdb
path:/var/lib/ctdb/persistent/secrets.tdb.0 PERSISTENT
dbid:0x6645c6c4 name:ctdb.tdb path:/var/lib/ctdb/persistent/ctdb.tdb.0
PERSISTENT
Server 3:
Number of databases:20
dbid:0x4d2a432b name:g_lock.tdb path:/var/lib/ctdb/g_lock.tdb.2
dbid:0x2d608c16 name:netlogon_creds_cli.tdb
path:/var/lib/ctdb/netlogon_creds_cli.tdb.2 READONLY
dbid:0x9ec2a880 name:serverid.tdb path:/var/lib/ctdb/serverid.tdb.2
dbid:0x6afb8c09 name:dbwrap_watchers.tdb
path:/var/lib/ctdb/dbwrap_watchers.tdb.2
dbid:0x521b7544 name:smbXsrv_version_global.tdb
path:/var/lib/ctdb/smbXsrv_version_global.tdb.2
dbid:0x6b06a26d name:smbXsrv_session_global.tdb
path:/var/lib/ctdb/smbXsrv_session_global.tdb.2
dbid:0x68c12c2c name:smbXsrv_tcon_global.tdb
path:/var/lib/ctdb/smbXsrv_tcon_global.tdb.2
dbid:0x4e66c2b2 name:brlock.tdb path:/var/lib/ctdb/brlock.tdb.2
dbid:0x7a19d84d name:locking.tdb path:/var/lib/ctdb/locking.tdb.2
dbid:0x06916e77 name:leases.tdb path:/var/lib/ctdb/leases.tdb.2
dbid:0x66f71b8c name:smbXsrv_open_global.tdb
path:/var/lib/ctdb/smbXsrv_open_global.tdb.2
dbid:0x5bcfcbd7 name:printer_list.tdb path:/var/lib/ctdb/printer_list.tdb.2
dbid:0x477d2e20 name:smbXsrv_client_global.tdb
path:/var/lib/ctdb/smbXsrv_client_global.tdb.2
dbid:0x2ca251cf name:account_policy.tdb
path:/var/lib/ctdb/persistent/account_policy.tdb.2 PERSISTENT
dbid:0x3ef19640 name:passdb.tdb
path:/var/lib/ctdb/persistent/passdb.tdb.2 PERSISTENT
dbid:0xc3078fba name:share_info.tdb
path:/var/lib/ctdb/persistent/share_info.tdb.2 PERSISTENT
dbid:0x6cf2837d name:registry.tdb
path:/var/lib/ctdb/persistent/registry.tdb.2 PERSISTENT
dbid:0xa1413774 name:group_mapping.tdb
path:/var/lib/ctdb/persistent/group_mapping.tdb.2 PERSISTENT
dbid:0x7132c184 name:secrets.tdb
path:/var/lib/ctdb/persistent/secrets.tdb.2 PERSISTENT
dbid:0x6645c6c4 name:ctdb.tdb path:/var/lib/ctdb/persistent/ctdb.tdb.2
PERSISTENT
All the servers load an smb.conf from the cluster FS that includes
clustering=yes.
As I said we did not seem to have this problem when we were running
CentOS 4.2.10 (but it had a crash bug so we had to move).
Regards,
Alex
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