Re: [PATCH v6 1/4] file-posix: add tracking of the zone write pointers

[Damien Le Moal]

On 3/14/23 11:23, Dmitry Fomichev wrote:
>> @@ -3339,10 +3473,27 @@ static int coroutine_fn
>> raw_co_zone_mgmt(BlockDriverState *bs, BlockZoneOp op,
>>                          len >> BDRV_SECTOR_BITS);
>>      ret = raw_thread_pool_submit(bs, handle_aiocb_zone_mgmt, &acb);
>>      if (ret != 0) {
>> +        update_zones_wp(s->fd, wps, offset, index);
>>          ret = -errno;
>>          error_report("ioctl %s failed %d", op_name, ret);
>> +        goto out;
>>      }
>>  
>> +    if (zo == BLKRESETZONE && len == capacity) {
>> +        for (int i = 0; i < bs->bl.nr_zones; ++i) {
>> +            if (!BDRV_ZT_IS_CONV(wps->wp[i])) {
>> +                wps->wp[i] = i * bs->bl.zone_size;
> 
> This will reset write pointers of all read-only zones that may exist on the
> device and make the data stored in those zones unreadable. R/O zones need to 
> be
> skipped in this loop.

And offline zones need to be skipped as well.

-- 
Damien Le Moal
Western Digital Research