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scst: improve thin provisioning support

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This patch adds gen_tp_soft_threshold_reached_UA attribute for thin
provisioned devices that allows to generate THIN PROVISIONING SOFT
THRESHOLD REACHED Unit Attention.



git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@7071 d57e44dd-8a1f-0410-8b47-8ef2f437770f
This commit is contained in:
Vladislav Bolkhovitin
2016-12-20 06:07:55 +00:00
parent 5040dd22a4
commit 4e1dc1b526
6 changed files with 97 additions and 13 deletions
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scst/README
+8 -2
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@@ -1246,6 +1246,11 @@ Each vdisk_fileio's device has the following attributes in
- thin_provisioned - contains thin provisioning status of this virtual
device.
- gen_tp_soft_threshold_reached_UA - for thin provisioned devices
writing of anything into this write-only attribute will generate THIN
PROVISIONING SOFT THRESHOLD REACHED Unit Attention to all connected
to this device initiators.
- removable - contains removable status of this virtual device.
- rotational - contains rotational status of this virtual device.
@@ -1347,8 +1352,9 @@ For example:
Each vdisk_blockio's device has the following attributes in
/sys/kernel/scst_tgt/devices/device_name: blocksize, filename, nv_cache,
read_only, removable, resync_size, rotational, size_mb, t10_dev_id,
thin_provisioned, threads_num, threads_pool_type, tst, type, usn. See
above description of those parameters.
thin_provisioned, gen_tp_soft_threshold_reached_UA, threads_num,
threads_pool_type, tst, type, usn. See above description of those
parameters.
Each vdisk_nullio's device has the following attributes in
/sys/kernel/scst_tgt/devices/device_name: blocksize, read_only,